/* ================================
   UpLift - Main Stylesheet
   🎨 Vibrant Modern Design
   Version: 2.0.0 - Enhanced
   ================================ */

/* ========== CSS Reset ========== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* ========== CSS Variables ========== */
:root {
    /* 🎨 Vibrant Color Palette - Light Mode */
    --color-primary: #6366f1;
    --color-primary-dark: #4f46e5;
    --color-primary-light: #818cf8;
    --color-secondary: #ec4899;
    --color-secondary-dark: #db2777;
    --color-secondary-light: #f472b6;
    --color-accent: #8b5cf6;
    --color-accent-dark: #7c3aed;
    --color-accent-light: #a78bfa;
    
    /* Brand Colors */
    --color-success: #10b981;
    --color-success-light: #34d399;
    --color-warning: #f59e0b;
    --color-warning-light: #fbbf24;
    --color-error: #ef4444;
    --color-error-light: #f87171;
    --color-info: #3b82f6;
    --color-info-light: #60a5fa;
    
    /* Subject Colors */
    --color-math: #6366f1;
    --color-science: #10b981;
    --color-english: #ec4899;
    --color-sst: #f59e0b;
    --color-sports: #06b6d4;
    --color-arts: #8b5cf6;
    
    /* Neutral Colors */
    --color-white: #ffffff;
    --color-gray-50: #f9fafb;
    --color-gray-100: #f3f4f6;
    --color-gray-200: #e5e7eb;
    --color-gray-300: #d1d5db;
    --color-gray-400: #9ca3af;
    --color-gray-500: #6b7280;
    --color-gray-600: #4b5563;
    --color-gray-700: #374151;
    --color-gray-800: #1f2937;
    --color-gray-900: #111827;
    
    /* Background */
    --color-bg-main: #f9fafb;
    --color-bg-secondary: #ffffff;
    --color-bg-tertiary: #f3f4f6;
    --color-text: #111827;
    --color-text-secondary: #6b7280;
    --color-border: #e5e7eb;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    --gradient-secondary: linear-gradient(135deg, #ec4899 0%, #f59e0b 100%);
    --gradient-success: linear-gradient(135deg, #10b981 0%, #06b6d4 100%);
    --gradient-warm: linear-gradient(135deg, #f59e0b 0%, #ec4899 100%);
    --gradient-cool: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 100%);
    --gradient-rainbow: linear-gradient(135deg, #6366f1 0%, #ec4899 50%, #f59e0b 100%);
    
    /* Glass Effect */
    --glass-bg: rgba(255, 255, 255, 0.7);
    --glass-border: rgba(255, 255, 255, 0.18);
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-weight-light: 300;
    --font-weight-regular: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --font-weight-black: 800;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    --radius-2xl: 2rem;
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --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-secondary: 0 0 20px rgba(236, 72, 153, 0.3);
    
    /* Transitions */
    --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    
    /* Z-Index */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal: 1040;
    --z-popover: 1050;
    --z-tooltip: 1060;
}

/* ========== Base Styles ========== */
html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    font-weight: var(--font-weight-regular);
    line-height: 1.6;
    color: var(--color-text);
    background: var(--color-bg-main);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

/* ========== Typography ========== */
h1, h2, h3, h4, h5, h6 {
    font-weight: var(--font-weight-bold);
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
    color: var(--color-gray-900);
}

h1 {
    font-size: 3rem;
    font-weight: var(--font-weight-black);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

h2 {
    font-size: 2.5rem;
}

h3 {
    font-size: 2rem;
}

h4 {
    font-size: 1.5rem;
}

h5 {
    font-size: 1.25rem;
}

h6 {
    font-size: 1rem;
}

p {
    margin-bottom: var(--spacing-md);
    color: var(--color-text-secondary);
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: all var(--transition-normal);
    position: relative;
}

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

/* ========== Enhanced Buttons ========== */
button {
    font-family: var(--font-primary);
    font-weight: var(--font-weight-semibold);
    border: none;
    cursor: pointer;
    transition: all var(--transition-normal);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    position: relative;
    overflow: hidden;
}

button::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

button:active::before {
    width: 300px;
    height: 300px;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--color-white);
    padding: 0.875rem 1.75rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    font-size: 1rem;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl), var(--shadow-glow);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-secondary {
    background: var(--gradient-secondary);
    color: var(--color-white);
    padding: 0.875rem 1.75rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.btn-secondary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl), var(--shadow-glow-secondary);
}

.btn-outline {
    background-color: transparent;
    color: var(--color-primary);
    padding: 0.875rem 1.75rem;
    border-radius: var(--radius-lg);
    border: 2px solid var(--color-primary);
    position: relative;
}

.btn-outline::after {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--gradient-primary);
    opacity: 0;
    transition: opacity var(--transition-normal);
    border-radius: var(--radius-lg);
    z-index: -1;
}

.btn-outline:hover {
    color: var(--color-white);
    border-color: transparent;
}

.btn-outline:hover::after {
    opacity: 1;
}

.btn-success {
    background: var(--gradient-success);
    color: var(--color-white);
    padding: 0.875rem 1.75rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.btn-success:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
}

.btn-large {
    padding: 1.125rem 2.25rem;
    font-size: 1.125rem;
}

.btn-small {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    border-radius: var(--radius-md);
}

.btn-full {
    width: 100%;
}

.btn-google {
    background-color: var(--color-white);
    color: var(--color-gray-700);
    padding: 0.875rem 1.5rem;
    border-radius: var(--radius-lg);
    border: 2px solid var(--color-gray-200);
    font-weight: var(--font-weight-medium);
    width: 100%;
    box-shadow: var(--shadow-sm);
}

.btn-google:hover {
    background-color: var(--color-gray-50);
    border-color: var(--color-gray-300);
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
}

/* ========== Navigation ========== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--glass-bg);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid var(--glass-border);
    z-index: var(--z-sticky);
    padding: var(--spacing-md) 0;
    box-shadow: var(--shadow-sm);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-xl);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.5rem;
    font-weight: var(--font-weight-black);
    color: #000000;
    transition: transform var(--transition-normal);
}

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

.brand-icon {
    width: 32px;
    height: 32px;
    color: var(--color-primary);
    filter: drop-shadow(0 2px 4px rgba(99, 102, 241, 0.3));
}

.brand-text {
    color: #000000;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
}

.nav-link {
    font-weight: var(--font-weight-medium);
    color: var(--color-gray-700);
    transition: all var(--transition-normal);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-md);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: all var(--transition-normal);
    transform: translateX(-50%);
}

.nav-link:hover {
    color: var(--color-primary);
    background: rgba(99, 102, 241, 0.05);
}

.nav-link:hover::after {
    width: 80%;
}

.nav-user {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.btn-logout {
    background: var(--gradient-secondary);
    color: var(--color-white);
    padding: 0.625rem 1.25rem;
    border-radius: var(--radius-lg);
    font-weight: var(--font-weight-semibold);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
}

.btn-logout:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md), var(--shadow-glow-secondary);
}

/* ========== Enhanced Forms ========== */
.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-group label {
    display: block;
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-sm);
    color: var(--color-gray-700);
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

input[type="text"],
input[type="email"],
input[type="password"],
input[type="tel"],
input[type="date"],
input[type="number"],
input[type="time"],
select,
textarea {
    width: 100%;
    padding: 0.875rem 1rem;
    border: 2px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    font-family: var(--font-primary);
    font-size: 1rem;
    transition: all var(--transition-normal);
    background-color: var(--color-white);
    color: var(--color-gray-900);
}

input[type="date"],
input[type="time"] {
    cursor: pointer;
}

input[type="date"]::-webkit-calendar-picker-indicator,
input[type="time"]::-webkit-calendar-picker-indicator {
    cursor: pointer;
    padding: 0.25rem;
    filter: invert(0.5);
}

input:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.1);
    transform: translateY(-1px);
}

input:hover,
select:hover,
textarea:hover {
    border-color: var(--color-gray-300);
}

textarea {
    resize: vertical;
    min-height: 120px;
}

/* Form Validation States */
input.valid,
select.valid,
textarea.valid {
    border-color: var(--color-success);
}

input.invalid,
select.invalid,
textarea.invalid {
    border-color: var(--color-error);
}

/* ========== Enhanced Modal ========== */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    z-index: var(--z-modal);
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
    animation: fadeIn var(--transition-normal);
}

.modal.active {
    display: flex;
}

.modal-content {
    background: var(--color-white);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-2xl);
    max-width: 500px;
    width: 100%;
    position: relative;
    box-shadow: var(--shadow-2xl);
    max-height: 90vh;
    overflow-y: auto;
    animation: slideUp var(--transition-slow);
    border: 1px solid var(--color-gray-100);
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 2px solid var(--color-gray-100);
}

.modal-header h2 {
    margin: 0;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.close-btn,
.modal-close {
    background: var(--color-gray-100);
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    color: var(--color-gray-600);
    transition: all var(--transition-normal);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
}

.close-btn:hover,
.modal-close:hover {
    background: var(--color-gray-200);
    color: var(--color-gray-900);
    transform: rotate(90deg);
}

/* ========== Cards ========== */
.card {
    background: var(--color-white);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--color-gray-100);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

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

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

.card:hover::before {
    transform: scaleX(1);
}

/* ========== Badges ========== */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.375rem 0.875rem;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.badge-primary {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(139, 92, 246, 0.1));
    color: var(--color-primary);
    border: 1px solid rgba(99, 102, 241, 0.2);
}

.badge-success {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.1), rgba(6, 182, 212, 0.1));
    color: var(--color-success);
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.badge-warning {
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.1), rgba(251, 191, 36, 0.1));
    color: var(--color-warning);
    border: 1px solid rgba(245, 158, 11, 0.2);
}

.badge-error {
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.1), rgba(248, 113, 113, 0.1));
    color: var(--color-error);
    border: 1px solid rgba(239, 68, 68, 0.2);
}

.badge-info {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.1), rgba(96, 165, 250, 0.1));
    color: var(--color-info);
    border: 1px solid rgba(59, 130, 246, 0.2);
}

/* ========== Progress Indicators ========== */
.progress-bar {
    width: 100%;
    height: 8px;
    background: var(--color-gray-200);
    border-radius: var(--radius-full);
    overflow: hidden;
    position: relative;
}

.progress-fill {
    height: 100%;
    background: var(--gradient-primary);
    border-radius: var(--radius-full);
    transition: width var(--transition-slow);
    position: relative;
    overflow: hidden;
}

.progress-fill::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

/* ========== Utility Classes ========== */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-xl);
}

.section-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-3xl) var(--spacing-xl);
}

.text-center {
    text-align: center;
}

.text-muted {
    color: var(--color-text-secondary);
}

.text-gradient {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Spacing Utilities */
.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mb-xl { margin-bottom: var(--spacing-xl); }

.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }

.p-sm { padding: var(--spacing-sm); }
.p-md { padding: var(--spacing-md); }
.p-lg { padding: var(--spacing-lg); }
.p-xl { padding: var(--spacing-xl); }

/* ========== Enhanced Animations ========== */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
}

.fade-in {
    animation: fadeIn var(--transition-slow);
}

.slide-up {
    animation: slideUp var(--transition-slow);
}

.slide-down {
    animation: slideDown var(--transition-slow);
}

.scale-in {
    animation: scaleIn var(--transition-slow);
}

.pulse {
    animation: pulse 2s infinite;
}

.float {
    animation: float 3s ease-in-out infinite;
}

/* ========== Loading Spinner ========== */
.spinner {
    border: 3px solid var(--color-gray-200);
    border-top: 3px solid var(--color-primary);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.loading-screen {
    position: fixed;
    inset: 0;
    background: var(--color-white);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    gap: var(--spacing-lg);
}

.loading-screen p {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: var(--font-weight-semibold);
}

/* ========== Theme Toggle ========== */
.theme-toggle {
    background: var(--color-gray-100);
    border: 2px solid var(--color-gray-200);
    padding: 0.625rem;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-normal);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-gray-600);
}

.theme-toggle:hover {
    background: var(--color-gray-200);
    border-color: var(--color-gray-300);
    color: var(--color-gray-900);
    transform: rotate(180deg);
}

/* ========== Back to Dashboard Button ========== */
.btn-back-dashboard {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.625rem 1.25rem;
    background: var(--color-white);
    border: 2px solid var(--color-gray-300);
    border-radius: var(--radius-lg);
    color: var(--color-gray-700);
    font-weight: var(--font-weight-semibold);
    font-size: 0.9375rem;
    transition: all var(--transition-normal);
    text-decoration: none;
    box-shadow: var(--shadow-sm);
}

.btn-back-dashboard:hover {
    background: var(--color-gray-50);
    border-color: var(--color-primary);
    color: var(--color-primary);
    transform: translateX(-2px);
    box-shadow: var(--shadow-md);
}

.btn-back-dashboard [data-lucide] {
    width: 18px;
    height: 18px;
}

[data-theme="dark"] .btn-back-dashboard {
    background: var(--color-bg-tertiary);
    border-color: var(--color-border);
    color: var(--color-text-secondary);
}

[data-theme="dark"] .btn-back-dashboard:hover {
    background: var(--color-bg-secondary);
    border-color: var(--color-primary);
    color: var(--color-primary);
}

/* ========== Icons ========== */
[data-lucide] {
    width: 20px;
    height: 20px;
    stroke-width: 2px;
}

/* ========== Dark Mode ========== */
[data-theme="dark"] {
    --color-bg-main: #0f172a;
    --color-bg-secondary: #1e293b;
    --color-bg-tertiary: #334155;
    --color-text: #f1f5f9;
    --color-text-secondary: #94a3b8;
    --color-border: #334155;
    
    --color-gray-50: #1e293b;
    --color-gray-100: #334155;
    --color-gray-200: #475569;
    --color-gray-300: #64748b;
    
    --glass-bg: rgba(30, 41, 59, 0.7);
    --glass-border: rgba(148, 163, 184, 0.1);
    
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.6);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.7);
}

[data-theme="dark"] body {
    background: var(--color-bg-main);
    color: var(--color-text);
}

[data-theme="dark"] h1,
[data-theme="dark"] h2,
[data-theme="dark"] h3,
[data-theme="dark"] h4,
[data-theme="dark"] h5,
[data-theme="dark"] h6 {
    color: var(--color-text);
}

[data-theme="dark"] .navbar {
    background: var(--glass-bg);
    border-bottom-color: var(--glass-border);
}

[data-theme="dark"] .card {
    background: var(--color-bg-secondary);
    border-color: var(--color-border);
}

[data-theme="dark"] input,
[data-theme="dark"] select,
[data-theme="dark"] textarea {
    background-color: var(--color-bg-tertiary);
    color: var(--color-text);
    border-color: var(--color-border);
}

[data-theme="dark"] .modal {
    background-color: rgba(0, 0, 0, 0.8);
}

[data-theme="dark"] .modal-content {
    background: var(--color-bg-secondary);
    border-color: var(--color-border);
}

[data-theme="dark"] .loading-screen {
    background: var(--color-bg-main);
}

/* ========== Scrollbar Styling ========== */
::-webkit-scrollbar {
    width: 12px;
    height: 12px;
}

::-webkit-scrollbar-track {
    background: var(--color-gray-100);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb {
    background: var(--gradient-primary);
    border-radius: var(--radius-full);
    border: 2px solid var(--color-gray-100);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--gradient-secondary);
}

/* ========== Responsive Design ========== */
@media (max-width: 1024px) {
    html {
        font-size: 15px;
    }
    
    .nav-container {
        padding: 0 var(--spacing-lg);
    }
}

@media (max-width: 768px) {
    html {
        font-size: 14px;
    }
    
    h1 {
        font-size: 2.5rem;
    }
    
    h2 {
        font-size: 2rem;
    }
    
    h3 {
        font-size: 1.75rem;
    }
    
    .section-container {
        padding: var(--spacing-2xl) var(--spacing-lg);
    }
    
    .modal-content {
        padding: var(--spacing-xl);
    }
}

@media (max-width: 480px) {
    html {
        font-size: 13px;
    }
    
    .nav-container {
        padding: 0 var(--spacing-md);
    }
    
    .section-container {
        padding: var(--spacing-xl) var(--spacing-md);
    }
    
    .btn-large {
        padding: 0.875rem 1.5rem;
        font-size: 1rem;
    }
}

/* ========== Print Styles ========== */
@media print {
    .navbar,
    .btn-logout,
    .theme-toggle,
    .modal,
    button {
        display: none !important;
    }
    
    body {
        background: white;
        color: black;
    }
}

/* ========== MOBILE APP OPTIMIZATIONS (Capacitor) ========== */

/* Safe Area Insets for Notches/Cutouts */
@supports (padding: max(0px)) {
    body {
        padding-top: max(env(safe-area-inset-top), 0px);
        padding-bottom: max(env(safe-area-inset-bottom), 0px);
        padding-left: max(env(safe-area-inset-left), 0px);
        padding-right: max(env(safe-area-inset-right), 0px);
    }
    
    .navbar {
        padding-top: max(env(safe-area-inset-top), var(--spacing-md));
    }
}

/* Touch-Friendly Elements */
@media (hover: none) and (pointer: coarse) {
    /* Larger tap targets for mobile */
    button,
    .btn-primary,
    .btn-secondary,
    .btn-outline,
    .btn-success,
    a.btn-back-dashboard {
        min-height: 44px;
        min-width: 44px;
        padding: 0.75rem 1.5rem;
    }
    
    .btn-small {
        min-height: 40px;
        padding: 0.625rem 1.125rem;
    }
    
    /* Improve form inputs for touch */
    input[type="text"],
    input[type="email"],
    input[type="password"],
    input[type="tel"],
    input[type="date"],
    input[type="number"],
    input[type="time"],
    select,
    textarea {
        min-height: 44px;
        font-size: 16px; /* Prevents zoom on iOS */
        padding: 0.875rem 1rem;
    }
    
    /* Larger checkboxes and radio buttons */
    input[type="checkbox"],
    input[type="radio"] {
        min-width: 20px;
        min-height: 20px;
    }
    
    /* Better card interactions */
    .card {
        -webkit-tap-highlight-color: rgba(99, 102, 241, 0.1);
    }
    
    /* Remove hover effects on mobile */
    .card:hover {
        transform: none;
    }
    
    /* Better link tap targets */
    a {
        -webkit-tap-highlight-color: rgba(99, 102, 241, 0.1);
        min-height: 32px;
        display: inline-flex;
        align-items: center;
    }
}

/* Prevent Text Selection on Mobile (for UI elements) */
.btn-primary,
.btn-secondary,
.btn-outline,
.btn-success,
.btn-logout,
.nav-brand,
.badge {
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
    -webkit-touch-callout: none;
}

/* Smooth Scrolling for Mobile */
html {
    -webkit-overflow-scrolling: touch;
    scroll-padding-top: 80px;
}

/* Optimize Animations for Mobile Performance */
@media (prefers-reduced-motion: no-preference) {
    .card,
    button,
    .btn-primary,
    .btn-secondary {
        will-change: transform;
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* iOS Specific Fixes */
@supports (-webkit-touch-callout: none) {
    /* Prevent iOS zoom on input focus */
    input[type="text"],
    input[type="email"],
    input[type="password"],
    input[type="tel"],
    input[type="number"],
    select,
    textarea {
        font-size: 16px !important;
    }
    
    /* Fix iOS Safari bottom bar overlap */
    body {
        padding-bottom: env(safe-area-inset-bottom);
    }
    
    /* Prevent rubber band scrolling */
    body {
        overscroll-behavior-y: contain;
    }
}

/* Android Specific Fixes */
@media (max-width: 768px) and (orientation: portrait) {
    /* Better viewport handling on Android */
    body {
        min-height: 100vh;
        min-height: -webkit-fill-available;
    }
}

/* Landscape Mode Optimizations */
@media (max-width: 896px) and (orientation: landscape) {
    .navbar {
        padding: 0.5rem 0;
    }
    
    .nav-container {
        padding: 0 var(--spacing-md);
    }
    
    .modal-content {
        max-height: 85vh;
        padding: var(--spacing-lg);
    }
}

/* Pull-to-Refresh Indicator Space */
body {
    overscroll-behavior-y: contain;
}

/* Status Bar Styling (for Capacitor) */
.app-container {
    padding-top: constant(safe-area-inset-top);
    padding-top: env(safe-area-inset-top);
}

/* Hide Desktop-Only Elements on Mobile */
@media (max-width: 768px) {
    .desktop-only {
        display: none !important;
    }
    
    .mobile-only {
        display: block !important;
    }
}

@media (min-width: 769px) {
    .mobile-only {
        display: none !important;
    }
}

/* Optimize Images for Mobile */
@media (max-width: 768px) {
    img {
        max-width: 100%;
        height: auto;
    }
}

/* Better Modal Experience on Mobile */
@media (max-width: 768px) {
    .modal {
        padding: var(--spacing-md);
    }
    
    .modal-content {
        max-width: 100%;
        border-radius: var(--radius-xl);
        max-height: 95vh;
    }
}

/* Prevent Text Size Adjust on Orientation Change */
html {
    -webkit-text-size-adjust: 100%;
    -moz-text-size-adjust: 100%;
    -ms-text-size-adjust: 100%;
    text-size-adjust: 100%;
}

/* Capacitor Keyboard Resize Support */
@media (max-width: 768px) {
    .keyboard-open {
        padding-bottom: 0;
    }
}

/* Loading States for Mobile */
.mobile-loading {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 200px;
    color: var(--color-text-secondary);
}

/* Swipe Gestures Hint */
.swipeable {
    touch-action: pan-y;
    -webkit-touch-callout: none;
}

/* Better Table Responsiveness */
@media (max-width: 768px) {
    table {
        display: block;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }
}

/* Mobile Navigation Adjustments */
@media (max-width: 768px) {
    .nav-links {
        gap: var(--spacing-md);
    }
    
    .nav-link {
        padding: 0.5rem 0.75rem;
        font-size: 0.875rem;
    }
}

/* Performance: Hardware Acceleration */
.card,
button,
.modal-content,
.navbar {
    -webkit-transform: translateZ(0);
    transform: translateZ(0);
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
    -webkit-perspective: 1000;
    perspective: 1000;
}