/**
 * Peptide Journal - Modern Stylesheet
 * Contemporary design with blue/purple gradients and enhanced UX
 * 
 * @author Peptide Journal Team
 * @version 2.0.0
 */

/* ============================================================================
   CSS CUSTOM PROPERTIES (VARIABLES)
   ============================================================================ */

:root {
    /* Modern Color Palette - Blue/Purple Gradient Theme */
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --primary-50: #eef2ff;
    --primary-100: #e0e7ff;
    --primary-200: #c7d2fe;
    --primary-300: #a5b4fc;
    --primary-400: #818cf8;
    --primary-500: #6366f1;
    --primary-600: #4f46e5;
    --primary-700: #4338ca;
    --primary-800: #3730a3;
    --primary-900: #312e81;
    
    --secondary: #8b5cf6;
    --secondary-dark: #7c3aed;
    --secondary-light: #a78bfa;
    --secondary-50: #faf5ff;
    --secondary-100: #f3e8ff;
    --secondary-200: #e9d5ff;
    --secondary-300: #d8b4fe;
    --secondary-400: #c084fc;
    --secondary-500: #a855f7;
    --secondary-600: #9333ea;
    --secondary-700: #7c3aed;
    --secondary-800: #6b21a8;
    --secondary-900: #581c87;
    
    /* Gradient Definitions */
    --gradient-primary: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    --gradient-secondary: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
    --gradient-light: linear-gradient(135deg, #eef2ff 0%, #faf5ff 100%);
    --gradient-dark: linear-gradient(135deg, #312e81 0%, #581c87 100%);
    --gradient-accent: linear-gradient(135deg, #818cf8 0%, #c084fc 100%);
    
    /* Status Colors - Modern Palette */
    --success: #10b981;
    --success-light: #34d399;
    --success-dark: #059669;
    --danger: #ef4444;
    --danger-light: #f87171;
    --danger-dark: #dc2626;
    --warning: #f59e0b;
    --warning-light: #fbbf24;
    --warning-dark: #d97706;
    --info: #06b6d4;
    --info-light: #22d3ee;
    --info-dark: #0891b2;
    
    /* Background Colors - Modern Neutral Palette */
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    --bg-accent: #f0f9ff;
    --bg-surface: #ffffff;
    --bg-surface-elevated: #ffffff;
    --bg-overlay: rgba(0, 0, 0, 0.5);
    
    /* Dark Mode Support */
    --bg-dark: #0f172a;
    --bg-dark-secondary: #1e293b;
    --bg-dark-tertiary: #334155;
    
    /* Text Colors - High Contrast */
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #64748b;
    --text-light: #94a3b8;
    --text-inverse: #ffffff;
    --text-accent: #6366f1;
    
    /* Border Colors */
    --border: #e2e8f0;
    --border-light: #f1f5f9;
    --border-dark: #cbd5e1;
    --border-accent: #c7d2fe;
    
    /* Modern Shadows */
    --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --shadow-glow: 0 0 20px rgba(99, 102, 241, 0.3);
    --shadow-glow-purple: 0 0 20px rgba(139, 92, 246, 0.3);
    
    /* Border Radius - Modern Scale */
    --radius-none: 0;
    --radius-sm: 0.25rem;
    --radius: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    --radius-2xl: 2rem;
    --radius-full: 9999px;
    
    /* Spacing - Consistent Scale */
    --space-0: 0;
    --space-px: 1px;
    --space-0_5: 0.125rem;
    --space-1: 0.25rem;
    --space-1_5: 0.375rem;
    --space-2: 0.5rem;
    --space-2_5: 0.625rem;
    --space-3: 0.75rem;
    --space-3_5: 0.875rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-7: 1.75rem;
    --space-8: 2rem;
    --space-9: 2.25rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    --space-24: 6rem;
    
    /* Layout Dimensions */
    --sidebar-width: 280px;
    --sidebar-collapsed-width: 80px;
    --header-height: 80px;
    --content-max-width: 1200px;
    
    /* Typography - Modern Scale */
    --font-family-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-family-mono: 'JetBrains Mono', 'Fira Code', 'Monaco', 'Consolas', monospace;
    
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;
    
    --font-weight-thin: 100;
    --font-weight-light: 300;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --font-weight-extrabold: 800;
    --font-weight-black: 900;
    
    --line-height-tight: 1.25;
    --line-height-snug: 1.375;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.625;
    --line-height-loose: 2;
    
    /* Modern Transitions */
    --transition-none: none;
    --transition-all: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: all 0.1s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-colors: color 0.15s ease-in-out, background-color 0.15s ease-in-out, border-color 0.15s ease-in-out;
    --transition-opacity: opacity 0.15s ease-in-out;
    --transition-transform: transform 0.15s ease-in-out;
    
    /* Animation Durations */
    --duration-75: 75ms;
    --duration-100: 100ms;
    --duration-150: 150ms;
    --duration-200: 200ms;
    --duration-300: 300ms;
    --duration-500: 500ms;
    --duration-700: 700ms;
    --duration-1000: 1000ms;
    
    /* Z-Index Scale */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
    --z-toast: 1080;
}

/* ============================================================================
   RESET AND BASE STYLES
   ============================================================================ */

*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family-sans);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-normal);
    line-height: var(--line-height-normal);
    color: var(--text-primary);
    background: var(--bg-secondary);
    min-height: 100vh;
}

/* ============================================================================
   TYPOGRAPHY
   ============================================================================ */

h1, h2, h3, h4, h5, h6 {
    font-weight: var(--font-weight-semibold);
    line-height: var(--line-height-tight);
    color: var(--text-primary);
    margin-bottom: var(--space-4);
}

h1 { font-size: var(--font-size-4xl); }
h2 { font-size: var(--font-size-3xl); }
h3 { font-size: var(--font-size-2xl); }
h4 { font-size: var(--font-size-xl); }
h5 { font-size: var(--font-size-lg); }
h6 { font-size: var(--font-size-base); }

p {
    margin-bottom: var(--space-4);
    line-height: var(--line-height-relaxed);
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: var(--transition-colors);
}

a:hover {
    color: var(--primary-dark);
}

/* ============================================================================
   LAYOUT COMPONENTS
   ============================================================================ */

.app-container {
    display: flex;
    min-height: 100vh;
    background: var(--bg-secondary);
}

/* Modern Sidebar */
.sidebar {
    width: var(--sidebar-width);
    background: var(--bg-primary);
    border-right: 1px solid var(--border);
    box-shadow: var(--shadow-lg);
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    z-index: var(--z-fixed);
    transition: var(--transition-all);
    overflow-y: auto;
}

.sidebar.collapsed {
    width: var(--sidebar-collapsed-width) !important;
}

.sidebar-header {
    padding: var(--space-6);
    border-bottom: 1px solid var(--border);
    background: var(--gradient-primary);
    position: relative;
}

.sidebar-logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    color: var(--text-inverse);
    padding-right: var(--space-12);
    cursor: pointer;
    transition: var(--transition-all);
}

.sidebar-logo:hover {
    transform: scale(1.05);
}

.sidebar-logo-icon {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-xl);
    backdrop-filter: blur(10px);
    flex-shrink: 0;
}

.sidebar-logo-text {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    transition: var(--transition-opacity);
    white-space: nowrap;
}

.sidebar.collapsed .sidebar-logo {
    justify-content: center;
    padding-right: 0;
}

.sidebar.collapsed .sidebar-logo:hover {
    transform: scale(1.1);
}

.sidebar.collapsed .sidebar-logo-text {
    display: none;
}

/* Toggle button removed - logo is now clickable */

/* Modern Navigation */
.sidebar-nav {
    padding: var(--space-4);
}

.nav-menu {
    list-style: none;
}

.nav-item {
    margin-bottom: var(--space-1);
}

.nav-link {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-4);
    color: var(--text-secondary);
    border-radius: var(--radius-lg);
    transition: var(--transition-all);
    position: relative;
    font-weight: var(--font-weight-medium);
}

.sidebar.collapsed .nav-link {
    justify-content: center;
    padding: var(--space-3);
}

.nav-link:hover {
    background: var(--primary-50);
    color: var(--primary);
    transform: translateX(4px);
}

.sidebar.collapsed .nav-link:hover {
    background: var(--primary-50);
    transform: scale(1.05);
}

.nav-link.active {
    background: var(--gradient-primary);
    color: var(--text-inverse);
    box-shadow: var(--shadow-glow);
}

.sidebar.collapsed .nav-link.active {
    background: var(--gradient-primary);
    box-shadow: var(--shadow-glow);
}

.nav-link.active::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 24px;
    background: var(--text-inverse);
    border-radius: 0 var(--radius) var(--radius) 0;
}

.sidebar.collapsed .nav-link.active::before {
    display: none;
}

.nav-icon {
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-lg);
    transition: var(--transition-transform);
}

.nav-link:hover .nav-icon {
    transform: scale(1.1);
}

.nav-text {
    transition: var(--transition-opacity);
}

.sidebar.collapsed .nav-text {
    display: none;
}

/* Main Content Area */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    transition: var(--transition-all);
    min-height: 100vh;
    background: var(--bg-secondary);
}

.sidebar.collapsed ~ .main-content {
    margin-left: var(--sidebar-collapsed-width);
}

.content-header {
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border);
    padding: var(--space-6);
    display: flex;
    align-items: center;
    justify-content: space-between;
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
    backdrop-filter: blur(10px);
}

.content-title {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin: 0;
}

.header-actions {
    display: flex;
    gap: var(--space-3);
    align-items: center;
}

/* Sync Controls */
.sync-controls {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.sync-status {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
}

.sync-status.sync-synced {
    color: var(--success);
}

.sync-status.sync-syncing {
    color: var(--primary);
}

.sync-status.sync-error {
    color: var(--error);
}

.sync-status.sync-offline {
    color: var(--warning);
}

.content-body {
    padding: var(--space-8);
    max-width: var(--content-max-width);
    margin: 0 auto;
    width: 100%;
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    background: var(--gradient-primary);
    border: none;
    color: var(--text-inverse);
    width: 44px;
    height: 44px;
    border-radius: var(--radius-lg);
    cursor: pointer;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-lg);
    transition: var(--transition-all);
    box-shadow: var(--shadow-glow);
}

.mobile-menu-toggle:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-glow-purple);
}

/* Sidebar Overlay for Mobile */
.sidebar-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg-overlay);
    z-index: var(--z-modal-backdrop);
    display: none;
    pointer-events: none;
}

/* ============================================================================
   CARD COMPONENTS
   ============================================================================ */

.card {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border);
    overflow: hidden;
    transition: var(--transition-all);
    position: relative;
}

.card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.card-header {
    padding: var(--space-6);
    border-bottom: 1px solid var(--border);
    background: var(--bg-secondary);
    position: relative;
}

.card-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-primary);
}

.card-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    margin: 0;
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.card-body {
    padding: var(--space-6);
}

/* ============================================================================
   BUTTON COMPONENTS
   ============================================================================ */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    line-height: 1;
    border: 1px solid transparent;
    border-radius: var(--radius-lg);
    cursor: pointer;
    text-decoration: none;
    transition: var(--transition-all);
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: var(--transition-all);
}

.btn:hover::before {
    left: 100%;
}

.btn:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

/* Primary Button */
.btn-primary {
    background: var(--gradient-primary);
    color: var(--text-inverse);
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-lg);
}

.btn-primary:active {
    transform: translateY(0);
    box-shadow: var(--shadow-sm);
}

/* Secondary Button */
.btn-secondary {
    background: var(--bg-primary);
    color: var(--text-primary);
    border-color: var(--border);
    box-shadow: var(--shadow-xs);
}

.btn-secondary:hover {
    background: var(--primary-50);
    border-color: var(--primary-200);
    color: var(--primary);
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

/* Outline Button */
.btn-outline {
    background: transparent;
    color: var(--primary);
    border-color: var(--primary);
}

.btn-outline:hover {
    background: var(--primary);
    color: var(--text-inverse);
    transform: translateY(-1px);
    box-shadow: var(--shadow-glow);
}

/* Danger Button */
.btn-danger {
    background: var(--danger);
    color: var(--text-inverse);
    box-shadow: var(--shadow-sm);
}

.btn-danger:hover {
    background: var(--danger-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow-lg);
}

/* Button Sizes */
.btn-sm {
    padding: var(--space-2) var(--space-4);
    font-size: var(--font-size-sm);
}

.btn-lg {
    padding: var(--space-4) var(--space-8);
    font-size: var(--font-size-lg);
}

/* ============================================================================
   FORM COMPONENTS
   ============================================================================ */

.form-group {
    margin-bottom: var(--space-6);
}

.form-label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--text-primary);
    margin-bottom: var(--space-2);
}

.form-control {
    width: 100%;
    padding: var(--space-3) var(--space-4);
    font-size: var(--font-size-base);
    font-family: inherit;
    background: var(--bg-primary);
    border: 2px solid var(--border);
    border-radius: var(--radius-lg);
    transition: var(--transition-all);
    color: var(--text-primary);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
    transform: translateY(-1px);
}

.form-control::placeholder {
    color: var(--text-muted);
}

.form-text {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    margin-top: var(--space-2);
}

/* ============================================================================
   GRID SYSTEM
   ============================================================================ */

.grid {
    display: grid;
    gap: var(--space-6);
}

.grid-cols-1 { grid-template-columns: repeat(1, 1fr); }
.grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid-cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid-cols-4 { grid-template-columns: repeat(4, 1fr); }

/* ============================================================================
   FLEXBOX UTILITIES
   ============================================================================ */

.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.items-end { align-items: flex-end; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.justify-start { justify-content: flex-start; }
.justify-end { justify-content: flex-end; }
.gap-1 { gap: var(--space-1); }
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }

/* ============================================================================
   SPACING UTILITIES
   ============================================================================ */

.mb-2 { margin-bottom: var(--space-2); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }
.mb-8 { margin-bottom: var(--space-8); }
.mt-2 { margin-top: var(--space-2); }
.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mt-8 { margin-top: var(--space-8); }
.ml-2 { margin-left: var(--space-2); }
.mr-2 { margin-right: var(--space-2); }
.mt-3 { margin-top: var(--space-3); }

/* ============================================================================
   TEXT UTILITIES
   ============================================================================ */

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }
.text-xs { font-size: var(--font-size-xs); }
.text-sm { font-size: var(--font-size-sm); }
.text-base { font-size: var(--font-size-base); }
.text-lg { font-size: var(--font-size-lg); }
.text-xl { font-size: var(--font-size-xl); }
.text-2xl { font-size: var(--font-size-2xl); }
.text-3xl { font-size: var(--font-size-3xl); }

.text-primary { color: var(--text-primary); }
.text-secondary { color: var(--text-secondary); }
.text-muted { color: var(--text-muted); }
.text-accent { color: var(--text-accent); }
.text-success { color: var(--success); }
.text-danger { color: var(--danger); }
.text-warning { color: var(--warning); }
.text-info { color: var(--info); }

.text-blue-600 { color: #2563eb; }
.text-blue-700 { color: #1d4ed8; }
.text-blue-800 { color: #1e40af; }
.text-green-600 { color: #16a34a; }
.text-green-700 { color: #15803d; }
.text-green-800 { color: #166534; }
.text-yellow-600 { color: #ca8a04; }
.text-yellow-700 { color: #a16207; }
.text-yellow-800 { color: #854d0e; }
.text-purple-600 { color: #9333ea; }
.text-red-600 { color: #dc2626; }
.text-red-800 { color: #991b1b; }
.text-gray-500 { color: #6b7280; }
.text-gray-600 { color: #4b5563; }
.text-gray-700 { color: #374151; }

.font-medium { font-weight: var(--font-weight-medium); }
.font-semibold { font-weight: var(--font-weight-semibold); }
.font-bold { font-weight: var(--font-weight-bold); }

/* ============================================================================
   BACKGROUND UTILITIES
   ============================================================================ */

.bg-primary { background-color: var(--bg-primary); }
.bg-secondary { background-color: var(--bg-secondary); }
.bg-tertiary { background-color: var(--bg-tertiary); }
.bg-accent { background-color: var(--bg-accent); }

.bg-gradient-primary { background: var(--gradient-primary); }
.bg-gradient-secondary { background: var(--gradient-secondary); }
.bg-gradient-light { background: var(--gradient-light); }

.bg-blue-50 { background-color: #eff6ff; }
.bg-green-50 { background-color: #f0fdf4; }
.bg-yellow-50 { background-color: #fefce8; }
.bg-purple-50 { background-color: #faf5ff; }
.bg-red-50 { background-color: #fef2f2; }

/* ============================================================================
   BORDER UTILITIES
   ============================================================================ */

.border { border: 1px solid var(--border); }
.border-light { border: 1px solid var(--border-light); }
.border-dark { border: 1px solid var(--border-dark); }
.border-accent { border: 1px solid var(--border-accent); }
.border-red-200 { border-color: #fecaca; }

.rounded { border-radius: var(--radius); }
.rounded-lg { border-radius: var(--radius-lg); }
.rounded-xl { border-radius: var(--radius-xl); }
.rounded-full { border-radius: var(--radius-full); }

/* ============================================================================
   TABLE COMPONENTS
   ============================================================================ */

.table {
    width: 100%;
    border-collapse: collapse;
    margin-top: var(--space-6);
    font-size: var(--font-size-base);
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.table th,
.table td {
    padding: var(--space-4);
    text-align: left;
    border-bottom: 1px solid var(--border);
    font-size: var(--font-size-base);
    line-height: var(--line-height-normal);
}

.table th {
    background: var(--gradient-light);
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    font-size: var(--font-size-base);
    padding: var(--space-5) var(--space-4);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-size: var(--font-size-sm);
}

.table td {
    color: var(--text-primary);
    vertical-align: middle;
}

.table tbody tr {
    transition: var(--transition-all);
}

.table tbody tr:hover {
    background: var(--primary-50);
    transform: scale(1.01);
}

.table tbody tr:nth-child(even) {
    background: var(--bg-secondary);
}

.table tbody tr:nth-child(even):hover {
    background: var(--primary-50);
}

/* ============================================================================
   LIST UTILITIES
   ============================================================================ */

.list-decimal { list-style-type: decimal; }
.list-inside { list-style-position: inside; }
.space-y-1 > * + * { margin-top: var(--space-1); }

/* ============================================================================
   CHART CONTAINER
   ============================================================================ */

.chart-container {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    padding: var(--space-6);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border);
}

/* ============================================================================
   STATS GRID
   ============================================================================ */

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-6);
    margin-bottom: var(--space-8);
}

.stat-card {
    background: var(--bg-primary);
    padding: var(--space-6);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border);
    text-align: center;
    transition: var(--transition-all);
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
}

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.stat-value {
    font-size: var(--font-size-4xl);
    font-weight: var(--font-weight-bold);
    color: var(--primary);
    margin-bottom: var(--space-2);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    font-weight: var(--font-weight-medium);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* ============================================================================
   ANALYTICS COMPONENTS
   ============================================================================ */

.analytics-stat {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    padding: var(--space-6);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border);
    display: flex;
    align-items: center;
    gap: var(--space-4);
    transition: var(--transition-all);
    position: relative;
    overflow: hidden;
}

.analytics-stat::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-accent);
}

.analytics-stat:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.analytics-stat-icon {
    width: 48px;
    height: 48px;
    background: var(--gradient-primary);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-inverse);
    font-size: var(--font-size-xl);
    flex-shrink: 0;
}

.analytics-stat-content {
    flex: 1;
}

.analytics-stat-value {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin-bottom: var(--space-1);
}

.analytics-stat-label {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    font-weight: var(--font-weight-medium);
}

.analytics-chart {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border);
    overflow: hidden;
    min-height: 200px;
    max-height: 300px;
    position: relative;
}

.analytics-chart::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-secondary);
}

.analytics-chart-header {
    padding: var(--space-6);
    border-bottom: 1px solid var(--border);
    background: var(--bg-secondary);
}

.analytics-chart-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    margin-bottom: var(--space-1);
}

.analytics-chart-subtitle {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.analytics-chart-content {
    padding: var(--space-6);
    min-height: 150px;
    max-height: 200px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    align-items: stretch;
}

.analytics-chart-content:has(.empty-state) {
    align-items: center;
    justify-content: center;
}

.analytics-table {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border);
}

/* ============================================================================
   ACTIVITY COMPONENTS
   ============================================================================ */

.activity-item {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    padding: var(--space-4);
    border-radius: var(--radius-lg);
    transition: var(--transition-all);
    margin-bottom: var(--space-3);
}

.activity-item:hover {
    background: var(--primary-50);
    transform: translateX(4px);
}

.activity-icon {
    width: 40px;
    height: 40px;
    background: var(--gradient-primary);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-inverse);
    font-size: var(--font-size-lg);
    flex-shrink: 0;
}

.activity-details {
    flex: 1;
}

.activity-title {
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    margin-bottom: var(--space-1);
}

.activity-subtitle {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

/* ============================================================================
   INVENTORY COMPONENTS
   ============================================================================ */

.inventory-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-4);
    border-radius: var(--radius-lg);
    border: 2px solid var(--border);
    transition: var(--transition-all);
    margin-bottom: var(--space-3);
    background: var(--bg-primary);
}

.inventory-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.inventory-item.status-critical {
    border-color: var(--danger);
    background: rgba(239, 68, 68, 0.05);
}

.inventory-item.status-low {
    border-color: var(--warning);
    background: rgba(245, 158, 11, 0.05);
}

.inventory-item.status-good {
    border-color: var(--success);
    background: rgba(16, 185, 129, 0.05);
}

.inventory-name {
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
}

.inventory-remaining {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.inventory-status {
    flex-shrink: 0;
}

/* ============================================================================
   STATUS BADGES
   ============================================================================ */

.status-badge {
    display: inline-flex;
    align-items: center;
    padding: var(--space-1) var(--space-3);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.status-badge.critical {
    background: var(--danger);
    color: var(--text-inverse);
}

.status-badge.low {
    background: var(--warning);
    color: var(--text-inverse);
}

.status-badge.good {
    background: var(--success);
    color: var(--text-inverse);
}

.status-badge.unknown {
    background: var(--text-muted);
    color: var(--text-inverse);
}

/* ============================================================================
   USAGE STATS
   ============================================================================ */

.usage-stats {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.usage-stat {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-3);
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    transition: var(--transition-all);
}

.usage-stat:hover {
    background: var(--primary-50);
    transform: translateX(4px);
}

.peptide-name {
    font-weight: var(--font-weight-medium);
    color: var(--text-primary);
}

.usage-amount {
    font-weight: var(--font-weight-semibold);
    color: var(--primary);
}

/* ============================================================================
   CHART PLACEHOLDER
   ============================================================================ */

.chart-placeholder {
    text-align: center;
    padding: var(--space-8);
}

.chart-placeholder h4 {
    color: var(--text-primary);
    margin-bottom: var(--space-4);
    font-size: var(--font-size-lg);
}

/* ============================================================================
   EMPTY STATES
   ============================================================================ */

.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--space-12);
    text-align: center;
    color: var(--text-muted);
    min-height: 200px;
}

.empty-state i {
    font-size: var(--font-size-5xl);
    color: var(--text-light);
    margin-bottom: var(--space-4);
    opacity: 0.5;
}

.empty-state h3 {
    font-size: var(--font-size-xl);
    color: var(--text-secondary);
    margin-bottom: var(--space-2);
}

.empty-state p {
    color: var(--text-muted);
    margin-bottom: var(--space-2);
}

.empty-state small {
    color: var(--text-light);
    font-size: var(--font-size-sm);
}

/* ============================================================================
   RESPONSIVE DESIGN
   ============================================================================ */

@media (max-width: 1024px) {
    .stats-grid {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
        gap: var(--space-4);
    }
    
    .grid-cols-4 {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
        transition: transform 0.3s ease;
        z-index: 1001;
    }
    
    .sidebar.show {
        transform: translateX(0) !important;
        z-index: 1001;
    }
    
    .sidebar.show ~ .sidebar-overlay {
        display: block;
        z-index: 1000;
        pointer-events: auto;
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .mobile-menu-toggle {
        display: flex;
        z-index: 1002;
    }
    
    /* Ensure navigation links are clickable */
    .sidebar.show .nav-menu {
        opacity: 1;
        visibility: visible;
        position: relative;
        z-index: 1002;
    }
    
    .sidebar.show .nav-link {
        opacity: 1;
        transform: translateX(0);
        position: relative;
        z-index: 1002;
        pointer-events: auto;
    }
    
    .sidebar.show .nav-item {
        position: relative;
        z-index: 1002;
    }
}
    
    .content-body {
        padding: var(--space-4);
    }
    
    .content-header {
        padding: var(--space-4);
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
        gap: var(--space-4);
    }
    
    .grid-cols-2,
    .grid-cols-3 {
        grid-template-columns: 1fr;
    }
    
    .analytics-chart {
        min-height: 150px;
        max-height: 250px;
    }
    
    .analytics-chart-content {
        min-height: 100px;
        max-height: 150px;
        padding: var(--space-4);
    }
    
    .card-header,
    .card-body {
        padding: var(--space-4);
    }
    
    .btn {
        padding: var(--space-2_5) var(--space-4);
        font-size: var(--font-size-sm);
    }
}

@media (max-width: 480px) {
    .content-body {
        padding: var(--space-3);
    }
    
    .content-header {
        padding: var(--space-3);
    }
    
    .stats-grid {
        gap: var(--space-3);
    }
    
    .stat-card {
        padding: var(--space-4);
    }
    
    .stat-value {
        font-size: var(--font-size-3xl);
    }
    
    .analytics-stat {
        padding: var(--space-4);
        flex-direction: column;
        text-align: center;
        gap: var(--space-3);
    }
    
    .analytics-stat-icon {
        width: 40px;
        height: 40px;
        font-size: var(--font-size-lg);
    }
    
    .analytics-chart-header {
        padding: var(--space-4);
    }
    
    .analytics-chart-content {
        padding: var(--space-3);
    }
    
    .card-header,
    .card-body {
        padding: var(--space-3);
    }
    
    .table th,
    .table td {
        padding: var(--space-3);
        font-size: var(--font-size-sm);
    }
    
    .inventory-item {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-2);
        padding: var(--space-3);
    }
    
    .activity-item {
        padding: var(--space-3);
        gap: var(--space-3);
    }
    
    .activity-icon {
        width: 36px;
        height: 36px;
        font-size: var(--font-size-base);
    }
}

/* ============================================================================
   MODAL COMPONENTS
   ============================================================================ */

.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg-overlay);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: var(--z-modal);
    backdrop-filter: blur(4px);
}

.modal.hidden {
    display: none;
}

.modal-content {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-2xl);
    max-width: 500px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
}

.modal-header {
    padding: var(--space-6);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--bg-secondary);
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
}

.modal-header h3 {
    margin: 0;
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
}

.modal-close {
    background: none;
    border: none;
    font-size: var(--font-size-2xl);
    color: var(--text-muted);
    cursor: pointer;
    padding: var(--space-2);
    border-radius: var(--radius);
    transition: var(--transition-all);
}

.modal-close:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.modal-body {
    padding: var(--space-6);
}

/* ============================================================================
   ANIMATIONS AND TRANSITIONS
   ============================================================================ */

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

.animate-fadeIn {
    animation: fadeIn 0.5s ease-out;
}

.animate-slideIn {
    animation: slideIn 0.3s ease-out;
}

.animate-pulse {
    animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

.animate-spin {
    animation: spin 1s linear infinite;
}

/* ============================================================================
   UTILITY CLASSES
   ============================================================================ */

.hidden { display: none !important; }
.space-y-2 > * + * { margin-top: var(--space-2); }
.space-y-3 > * + * { margin-top: var(--space-3); }
.space-y-4 > * + * { margin-top: var(--space-4); }
.block { display: block !important; }
.inline-block { display: inline-block !important; }
.flex { display: flex !important; }
.inline-flex { display: inline-flex !important; }
.grid { display: grid !important; }

.w-full { width: 100% !important; }
.h-full { height: 100% !important; }
.min-h-screen { min-height: 100vh !important; }

.relative { position: relative !important; }
.absolute { position: absolute !important; }
.fixed { position: fixed !important; }
.sticky { position: sticky !important; }

.overflow-hidden { overflow: hidden !important; }
.overflow-auto { overflow: auto !important; }
.overflow-x-auto { overflow-x: auto !important; }
.overflow-y-auto { overflow-y: auto !important; }

.cursor-pointer { cursor: pointer !important; }
.cursor-not-allowed { cursor: not-allowed !important; }

.select-none { user-select: none !important; }
.select-text { user-select: text !important; }

.opacity-0 { opacity: 0 !important; }
.opacity-25 { opacity: 0.25 !important; }
.opacity-50 { opacity: 0.5 !important; }
.opacity-75 { opacity: 0.75 !important; }
.opacity-100 { opacity: 1 !important; }

.z-10 { z-index: 10 !important; }
.z-20 { z-index: 20 !important; }
.z-30 { z-index: 30 !important; }
.z-40 { z-index: 40 !important; }
.z-50 { z-index: 50 !important; }

/* ============================================================================
   REFERENCES STYLES
   ============================================================================ */

.reference-item {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    margin-bottom: 1rem;
    transition: all 0.2s ease;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.reference-item:hover {
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.15);
    border-color: var(--primary-300);
}

.reference-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 0.75rem;
}

.reference-title {
    margin: 0;
    font-size: 1.125rem;
    font-weight: 600;
    line-height: 1.4;
    flex: 1;
}

.reference-link {
    color: var(--primary-600);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.2s ease;
}

.reference-link:hover {
    color: var(--primary-700);
    text-decoration: none;
}

.reference-link-icon {
    font-size: 0.875rem;
    opacity: 0.7;
    transition: opacity 0.2s ease;
}

.reference-link:hover .reference-link-icon {
    opacity: 1;
}

.reference-actions {
    display: flex;
    gap: 0.5rem;
    margin-left: 1rem;
}

.reference-description {
    color: var(--gray-600);
    font-size: 0.95rem;
    line-height: 1.5;
    margin-top: 0.5rem;
    padding-top: 0.75rem;
    border-top: 1px solid var(--gray-100);
}

/* ============================================================================
   PRINT STYLES
   ============================================================================ */

@media print {
    .sidebar,
    .mobile-menu-toggle,
    .header-actions,
    .btn {
        display: none !important;
    }
    
    .main-content {
        margin-left: 0 !important;
    }
    
    .card {
        box-shadow: none !important;
        border: 1px solid #000 !important;
        page-break-inside: avoid;
    }
    
    .table {
        box-shadow: none !important;
    }
    
    .table th,
    .table td {
        border: 1px solid #000 !important;
    }
}

/* ============================================================================
   HEALTH MONITORING STYLES
   ============================================================================ */

/* Health Form Styles */
.health-form {
    max-width: 100%;
}

.form-section {
    margin-bottom: 2rem;
    padding: 1.5rem;
    background: var(--gradient-light);
    border-radius: 12px;
    border: 1px solid var(--primary-200);
}

.form-section-title {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--primary-700);
}

.form-section-title i {
    color: var(--primary-500);
    font-size: 1.25rem;
}

/* Slider Styles */
.slider-container {
    position: relative;
    margin-top: 0.5rem;
}

.form-slider {
    width: 100%;
    height: 8px;
    border-radius: 4px;
    background: var(--primary-200);
    outline: none;
    -webkit-appearance: none;
    appearance: none;
    cursor: pointer;
}

.form-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--gradient-primary);
    cursor: pointer;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    transition: all 0.2s ease;
}

.form-slider::-webkit-slider-thumb:hover {
    transform: scale(1.1);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

.form-slider::-moz-range-thumb {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--gradient-primary);
    cursor: pointer;
    border: none;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    transition: all 0.2s ease;
}

.form-slider::-moz-range-thumb:hover {
    transform: scale(1.1);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

.slider-labels {
    display: flex;
    justify-content: space-between;
    margin-top: 0.5rem;
    font-size: 0.875rem;
    color: var(--gray-600);
}

.slider-value {
    position: absolute;
    top: -2.5rem;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary-500);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 6px;
    font-size: 0.875rem;
    font-weight: 600;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.slider-value::after {
    content: '';
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    border: 4px solid transparent;
    border-top-color: var(--primary-500);
}

/* Health Entry Styles */
.health-entry-item {
    background: white;
    border: 1px solid var(--primary-200);
    border-radius: 12px;
    padding: 1.5rem;
    margin-bottom: 1rem;
    transition: all 0.2s ease;
}

.health-entry-item:hover {
    border-color: var(--primary-300);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.1);
}

.health-entry-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--primary-100);
}

.health-entry-date {
    font-weight: 600;
    color: var(--primary-700);
    font-size: 1.125rem;
}

.health-entry-actions {
    display: flex;
    gap: 0.5rem;
}

.health-entry-metrics {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 1rem;
}

.metric-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 0.75rem;
    background: var(--primary-50);
    border-radius: 8px;
    font-size: 0.875rem;
    color: var(--primary-700);
    font-weight: 500;
}

.metric-item i {
    color: var(--primary-500);
    font-size: 0.875rem;
}

.health-entry-notes {
    padding: 0.75rem;
    background: var(--gray-50);
    border-radius: 8px;
    font-size: 0.875rem;
    color: var(--gray-700);
    border-left: 3px solid var(--primary-300);
}

/* Chart Container Styles */
.chart-container {
    min-height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-light);
    border-radius: 12px;
    border: 1px solid var(--primary-200);
}

.chart-container .empty-state {
    text-align: center;
    color: var(--gray-500);
}

.chart-container .empty-state i {
    font-size: 3rem;
    margin-bottom: 1rem;
    color: var(--primary-300);
}

.chart-container .empty-state p {
    font-size: 1.125rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
}

.chart-container .empty-state small {
    font-size: 0.875rem;
    color: var(--gray-400);
}

/* Form Actions */
.form-actions {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--primary-200);
}

/* Responsive Design for Health Monitoring */
@media (max-width: 768px) {
    .form-section {
        padding: 1rem;
        margin-bottom: 1.5rem;
    }
    
    .form-section-title {
        font-size: 1rem;
        margin-bottom: 1rem;
    }
    
    .health-entry-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }
    
    .health-entry-actions {
        align-self: flex-end;
    }
    
    .health-entry-metrics {
        flex-direction: column;
        gap: 0.75rem;
    }
    
    .metric-item {
        justify-content: flex-start;
    }
    
    .form-actions {
        flex-direction: column;
    }
    
    .slider-value {
        top: -2rem;
        font-size: 0.75rem;
        padding: 0.25rem 0.5rem;
    }
}

/* Health Monitoring Specific Animations */
.health-entry-item {
    animation: slideInUp 0.3s ease-out;
}

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Health Monitoring Status Indicators */
.metric-item.hunger-low { background: var(--success-50); color: var(--success-700); }
.metric-item.hunger-high { background: var(--warning-50); color: var(--warning-700); }
.metric-item.energy-high { background: var(--success-50); color: var(--success-700); }
.metric-item.energy-low { background: var(--warning-50); color: var(--warning-700); }
.metric-item.mood-good { background: var(--success-50); color: var(--success-700); }
.metric-item.mood-poor { background: var(--warning-50); color: var(--warning-700); }
.metric-item.side-effect { background: var(--error-50); color: var(--error-700); }
.metric-item.training-good { background: var(--success-50); color: var(--success-700); }                                                                        
.metric-item.training-poor { background: var(--warning-50); color: var(--warning-700); }

/* ============================================================================
   USAGE CALENDAR STYLES
   ============================================================================ */

.usage-calendar {
    background: white;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    overflow: visible;
    padding: 1rem;
}

/* Calendar Weekdays Header */
.calendar-weekdays {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 1px;
    margin-bottom: 0.5rem;
}

.calendar-weekday {
    text-align: center;
    font-weight: 600;
    font-size: 0.875rem;
    color: var(--text-secondary);
    padding: 0.5rem;
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
}

/* Calendar Days Grid */
.calendar-days-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 1px;
}

/* Calendar Day */
.calendar-day {
    min-height: 3rem;
    padding: 0.5rem;
    border: 1px solid var(--border-light);
    background: white;
    cursor: pointer;
    transition: all 0.2s ease;
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
}

.calendar-day:hover {
    background: var(--primary-50);
    border-color: var(--primary-200);
}

.calendar-day.today {
    background: var(--primary-100);
    border-color: var(--primary-300);
    font-weight: 600;
}

.calendar-day-empty {
    min-height: 3rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-light);
}

/* Day Number */
.day-number {
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 0.25rem;
}

/* Usage Dots */
.usage-dots {
    display: flex;
    flex-wrap: wrap;
    gap: 0.125rem;
    justify-content: center;
    width: 100%;
}

.usage-dot {
    width: 0.375rem;
    height: 0.375rem;
    border-radius: 50%;
    background: var(--primary-500);
}

.usage-dot.multiple {
    background: var(--secondary-500);
}

.usage-dot.high-dose {
    background: var(--warning);
}

/* Tooltip */
.day-tooltip {
    position: absolute;
    bottom: calc(100% + 0.5rem);
    left: 50%;
    transform: translateX(-50%);
    background: #1f2937;
    color: white;
    padding: 0.5rem;
    border-radius: var(--radius);
    font-size: 0.75rem;
    white-space: nowrap;
    z-index: 10000;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s ease;
}

.calendar-day:hover .day-tooltip {
    opacity: 1;
}

.day-tooltip::after {
    content: '';
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    border: 4px solid transparent;
    border-top-color: #1f2937;
}

/* Calendar Navigation */
.calendar-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1rem;
}

.calendar-nav button {
    padding: 0.5rem;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    background: white;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s ease;
}

.calendar-nav button:hover {
    background: var(--primary-50);
    border-color: var(--primary-200);
    color: var(--primary);
}

.calendar-nav button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.calendar-month-year {
    font-size: 1.125rem;
    font-weight: 600;
    color: #1f2937;
}

/* Responsive Calendar */
@media (max-width: 768px) {
    .calendar-day {
        min-height: 2.5rem;
        padding: 0.25rem;
    }
    
    .day-number {
        font-size: 0.75rem;
    }
    
    .usage-dot {
        width: 0.25rem;
        height: 0.25rem;
    }
    
    .calendar-weekday {
        padding: 0.25rem;
        font-size: 0.75rem;
    }
}

/* ============================================================================
   WEIGHT TRACKING - COMPLETELY REDESIGNED
   ============================================================================ */

/* Chart Section */
.weight-chart-section {
    margin-bottom: 2rem;
}

.weight-chart-container {
    height: 300px;
    background: linear-gradient(135deg, #f8fafc 0%, #ffffff 100%);
    border: 1px solid #e2e8f0;
    border-radius: 1rem;
    padding: 1.5rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

/* Entries Section */
.weight-entries-section {
    background: #ffffff;
    border-radius: 1rem;
    border: 1px solid #e2e8f0;
    overflow: hidden;
}

.weight-entries-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 2rem;
    background: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%);
    color: white;
}

.weight-entries-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin: 0;
}

.weight-entries-source {
    font-size: 0.875rem;
    opacity: 0.9;
    background: rgba(255, 255, 255, 0.2);
    padding: 0.25rem 0.75rem;
    border-radius: 0.5rem;
}

.weight-entries-list {
    padding: 1.5rem 2rem;
    max-height: 300px;
    overflow-y: auto;
}

/* Individual Weight Entry */
.weight-entry-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
    border-bottom: 1px solid #f1f5f9;
    transition: all 0.2s ease;
}

.weight-entry-item:last-child {
    border-bottom: none;
}

.weight-entry-item:hover {
    background: #f8fafc;
    margin: 0 -1rem;
    padding: 1rem;
    border-radius: 0.5rem;
}

.weight-entry-date {
    font-size: 0.875rem;
    color: #64748b;
    font-weight: 500;
    min-width: 100px;
}

.weight-entry-data {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.weight-entry-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: #1e293b;
    background: linear-gradient(135deg, #3b82f6, #1d4ed8);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.weight-entry-change {
    font-size: 0.875rem;
    font-weight: 600;
    padding: 0.375rem 0.75rem;
    border-radius: 0.5rem;
    min-width: 60px;
    text-align: center;
}

.weight-entry-change.positive {
    background: #dcfce7;
    color: #166534;
    border: 1px solid #22c55e;
}

.weight-entry-change.negative {
    background: #fef2f2;
    color: #dc2626;
    border: 1px solid #ef4444;
}

.weight-entry-change.neutral {
    background: #f1f5f9;
    color: #64748b;
    border: 1px solid #94a3b8;
}

/* Responsive Design */
@media (max-width: 768px) {
    .weight-entries-header {
        padding: 1rem 1.5rem;
        flex-direction: column;
        gap: 0.5rem;
        align-items: flex-start;
    }
    
    .weight-entries-list {
        padding: 1rem 1.5rem;
    }
    
    .weight-entry-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.75rem;
    }
    
    .weight-entry-data {
        width: 100%;
        justify-content: space-between;
    }
    
    .weight-entry-value {
        font-size: 1.25rem;
    }
}

/* ============================================================================
   LOADING STATES & ANIMATIONS
   ============================================================================ */

/* Loading Spinner */
.loading-spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: #fff;
    animation: spin 1s ease-in-out infinite;
}

.loading-spinner-lg {
    width: 40px;
    height: 40px;
    border-width: 4px;
}

.loading-spinner-sm {
    width: 16px;
    height: 16px;
    border-width: 2px;
}

/* Skeleton Loading */
.skeleton {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: loading 1.5s infinite;
    border-radius: 4px;
}

.skeleton-text {
    height: 1rem;
    margin-bottom: 0.5rem;
}

.skeleton-text:last-child {
    margin-bottom: 0;
    width: 60%;
}

.skeleton-title {
    height: 1.5rem;
    margin-bottom: 1rem;
}

.skeleton-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
}

.skeleton-button {
    height: 2.5rem;
    width: 100px;
}

.skeleton-card {
    padding: 1rem;
    border-radius: 8px;
    background: #fff;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

/* Loading Overlay */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    backdrop-filter: blur(2px);
}

.loading-overlay.dark {
    background: rgba(0, 0, 0, 0.8);
}

/* Empty State Illustrations */
.empty-state {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--text-secondary);
}

.empty-state-icon {
    font-size: 4rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

.empty-state-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.empty-state-description {
    font-size: 0.875rem;
    margin-bottom: 1.5rem;
    max-width: 400px;
    margin-left: auto;
    margin-right: auto;
}

.empty-state-action {
    margin-top: 1rem;
}

/* Micro-animations */
.fade-in {
    animation: fadeIn 0.3s ease-in-out;
}

.slide-up {
    animation: slideUp 0.3s ease-out;
}

.scale-in {
    animation: scaleIn 0.2s ease-out;
}

.bounce-in {
    animation: bounceIn 0.6s ease-out;
}

/* Hover Effects */
.hover-lift {
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.hover-lift:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.hover-glow {
    transition: box-shadow 0.3s ease;
}

.hover-glow:hover {
    box-shadow: 0 0 20px rgba(59, 130, 246, 0.3);
}

.hover-scale {
    transition: transform 0.2s ease;
}

.hover-scale:hover {
    transform: scale(1.05);
}

/* Form Enhancements */
.form-group {
    position: relative;
}

.form-floating-label {
    position: absolute;
    top: 50%;
    left: 12px;
    transform: translateY(-50%);
    background: #fff;
    padding: 0 4px;
    color: var(--text-secondary);
    transition: all 0.2s ease;
    pointer-events: none;
    z-index: 1;
}

.form-control:focus + .form-floating-label,
.form-control:not(:placeholder-shown) + .form-floating-label {
    top: 0;
    font-size: 0.75rem;
    color: var(--primary);
}

.form-validation {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    font-size: 0.75rem;
    color: var(--danger);
    margin-top: 4px;
    opacity: 0;
    transform: translateY(-10px);
    transition: all 0.2s ease;
}

.form-validation.show {
    opacity: 1;
    transform: translateY(0);
}

.form-validation.success {
    color: var(--success);
}

/* Auto-save indicator */
.auto-save-indicator {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background: var(--success);
    color: white;
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.875rem;
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.3s ease;
    z-index: 1000;
}

.auto-save-indicator.show {
    opacity: 1;
    transform: translateY(0);
}

.auto-save-indicator.saving {
    background: var(--warning);
}

/* Chart Container Enhancements */
.chart-container {
    position: relative;
    background: #fff;
    border-radius: 8px;
    padding: 1rem;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    transition: box-shadow 0.2s ease;
}

.chart-container:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.chart-loading {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 300px;
    color: var(--text-secondary);
}

.chart-error {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 300px;
    color: var(--danger);
}

.chart-error-icon {
    font-size: 2rem;
    margin-bottom: 1rem;
}

/* Animation Keyframes */
@keyframes loading {
    0% {
        background-position: 200% 0;
    }
    100% {
        background-position: -200% 0;
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes bounceIn {
    0% {
        opacity: 0;
        transform: scale(0.3);
    }
    50% {
        opacity: 1;
        transform: scale(1.05);
    }
    70% {
        transform: scale(0.9);
    }
    100% {
        opacity: 1;
        transform: scale(1);
    }
}

/* Dark mode adjustments */
@media (prefers-color-scheme: dark) {
    .skeleton {
        background: linear-gradient(90deg, #2a2a2a 25%, #3a3a3a 50%, #2a2a2a 75%);
        background-size: 200% 100%;
    }
    
    .loading-overlay {
        background: rgba(0, 0, 0, 0.9);
    }
    
    .form-floating-label {
        background: var(--bg-primary);
    }
}