/* CSS Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Color System */
    --primary-50: #eff6ff;
    --primary-100: #dbeafe;
    --primary-200: #bfdbfe;
    --primary-300: #93c5fd;
    --primary-400: #60a5fa;
    --primary-500: #3b82f6;
    --primary-600: #2563eb;
    --primary-700: #1d4ed8;
    --primary-800: #1e40af;
    --primary-900: #1e3a8a;
    
    --secondary-50: #ecfdf5;
    --secondary-100: #d1fae5;
    --secondary-200: #a7f3d0;
    --secondary-300: #6ee7b7;
    --secondary-400: #34d399;
    --secondary-500: #10b981;
    --secondary-600: #059669;
    --secondary-700: #047857;
    --secondary-800: #065f46;
    --secondary-900: #064e3b;
    
    --accent-50: #fff7ed;
    --accent-100: #ffedd5;
    --accent-200: #fed7aa;
    --accent-300: #fdba74;
    --accent-400: #fb923c;
    --accent-500: #f97316;
    --accent-600: #ea580c;
    --accent-700: #c2410c;
    --accent-800: #9a3412;
    --accent-900: #7c2d12;
    
    --success-50: #f0fdf4;
    --success-100: #dcfce7;
    --success-200: #bbf7d0;
    --success-300: #86efac;
    --success-400: #4ade80;
    --success-500: #22c55e;
    --success-600: #16a34a;
    --success-700: #15803d;
    --success-800: #166534;
    
    --warning-50: #fffbeb;
    --warning-100: #fef3c7;
    --warning-200: #fde68a;
    --warning-300: #fcd34d;
    --warning-400: #fbbf24;
    --warning-500: #f59e0b;
    --warning-600: #d97706;
    --warning-700: #b45309;
    --warning-800: #92400e;
    
    --error-50: #fef2f2;
    --error-100: #fee2e2;
    --error-200: #fecaca;
    --error-300: #fca5a5;
    --error-400: #f87171;
    --error-500: #ef4444;
    --error-600: #dc2626;
    --error-700: #b91c1c;
    --error-800: #991b1b;
    
    --neutral-50: #f9fafb;
    --neutral-100: #f3f4f6;
    --neutral-200: #e5e7eb;
    --neutral-300: #d1d5db;
    --neutral-400: #9ca3af;
    --neutral-500: #6b7280;
    --neutral-600: #4b5563;
    --neutral-700: #374151;
    --neutral-800: #1f2937;
    --neutral-900: #111827;
    
    /* Typography */
    --font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    --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-size-6xl: 3.75rem;
    
    /* Line Heights */
    --leading-tight: 1.25;
    --leading-normal: 1.5;
    --leading-relaxed: 1.625;
    
    /* Spacing (8px system) */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    --space-24: 6rem;
    --space-32: 8rem;
    
    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.375rem;
    --radius-lg: 0.5rem;
    --radius-xl: 0.75rem;
    --radius-2xl: 1rem;
    --radius-3xl: 1.5rem;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    --shadow-2xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    line-height: var(--leading-normal);
    color: var(--neutral-800);
    background-color: var(--neutral-50);
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-4);
}

@media (min-width: 768px) {
    .container {
        padding: 0 var(--space-6);
    }
}

@media (min-width: 1024px) {
    .container {
        padding: 0 var(--space-8);
    }
}

/* Typography */
h1 {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    line-height: var(--leading-tight);
    color: var(--neutral-900);
}

h2 {
    font-size: var(--font-size-3xl);
    font-weight: 600;
    line-height: var(--leading-tight);
    color: var(--neutral-900);
}

h3 {
    font-size: var(--font-size-2xl);
    font-weight: 600;
    line-height: var(--leading-tight);
    color: var(--neutral-800);
}

h4 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    line-height: var(--leading-tight);
    color: var(--neutral-800);
}

p {
    line-height: var(--leading-relaxed);
    color: var(--neutral-600);
}

a {
    color: var(--primary-600);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--primary-700);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    border: 1px solid transparent;
    border-radius: var(--radius-lg);
    font-size: var(--font-size-sm);
    font-weight: 500;
    text-align: center;
    text-decoration: none;
    cursor: pointer;
    transition: all var(--transition-fast);
    position: relative;
    overflow: hidden;
    white-space: nowrap;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

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

.btn-primary {
    background: linear-gradient(135deg, var(--primary-600), var(--primary-700));
    color: white;
    border-color: var(--primary-600);
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover:not(:disabled) {
    background: linear-gradient(135deg, var(--primary-700), var(--primary-800));
    border-color: var(--primary-700);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background-color: white;
    color: var(--neutral-700);
    border-color: var(--neutral-300);
    box-shadow: var(--shadow-sm);
}

.btn-secondary:hover:not(:disabled) {
    background-color: var(--neutral-50);
    border-color: var(--neutral-400);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-success {
    background: linear-gradient(135deg, var(--success-500), var(--success-600));
    color: white;
    box-shadow: var(--shadow-sm);
}

.btn-warning {
    background: linear-gradient(135deg, var(--warning-500), var(--warning-600));
    color: white;
    box-shadow: var(--shadow-sm);
}

.btn-error {
    background: linear-gradient(135deg, var(--error-500), var(--error-600));
    color: white;
    box-shadow: var(--shadow-sm);
}

.btn-full {
    width: 100%;
}

.btn-nav {
    background: linear-gradient(135deg, var(--primary-600), var(--primary-700));
    color: white !important;
    padding: var(--space-2) var(--space-4);
    border-radius: var(--radius-lg);
}

/* Form Elements */
.form-group {
    margin-bottom: var(--space-4);
}

.form-row {
    display: grid;
    gap: var(--space-4);
    grid-template-columns: 1fr;
}

@media (min-width: 768px) {
    .form-row {
        grid-template-columns: 1fr 1fr;
    }
}

label {
    display: block;
    margin-bottom: var(--space-2);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--neutral-700);
}

input[type="text"],
input[type="email"],
input[type="password"],
input[type="tel"],
input[type="url"],
select,
textarea {
    width: 100%;
    padding: var(--space-3);
    border: 1px solid var(--neutral-300);
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    background-color: white;
}

input:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--primary-500);
    box-shadow: 0 0 0 3px rgb(59 130 246 / 0.1);
}

input.error,
select.error,
textarea.error {
    border-color: var(--error-500);
    box-shadow: 0 0 0 3px rgb(239 68 68 / 0.1);
}

.error-message {
    display: block;
    margin-top: var(--space-1);
    font-size: var(--font-size-xs);
    color: var(--error-500);
}

/* Checkbox */
.checkbox-label {
    display: flex;
    align-items: center;
    cursor: pointer;
    font-size: var(--font-size-sm);
}

.checkbox-label input[type="checkbox"] {
    display: none;
}

.checkmark {
    width: var(--space-4);
    height: var(--space-4);
    background-color: white;
    border: 2px solid var(--neutral-300);
    border-radius: var(--radius-sm);
    margin-left: var(--space-2);
    position: relative;
    transition: all var(--transition-fast);
}

.checkbox-label input:checked + .checkmark {
    background-color: var(--primary-600);
    border-color: var(--primary-600);
}

.checkbox-label input:checked + .checkmark:after {
    content: "";
    position: absolute;
    left: 2px;
    top: -2px;
    width: 4px;
    height: 8px;
    border: solid white;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

/* Navigation */
.navbar {
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--neutral-200);
    position: sticky;
    top: 0;
    z-index: 50;
    transition: all var(--transition-fast);
}

.navbar .container {
    display: flex;
    align-items: center;
    padding-top: var(--space-4);
    padding-bottom: var(--space-4);
    position: relative;
}

.nav-brand {
    flex: 0 0 auto;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.nav-links {
    flex: 1;
    display: flex;
    justify-content: center;
    gap: var(--space-6);
    align-items: center;
}

.nav-links.logged-in {
    justify-content: flex-end;
}

.nav-mobile {
    position: absolute;
    left: var(--space-4);
    display: none;
}

.nav-brand i {
    font-size: var(--font-size-2xl);
    color: var(--primary-600);
}

.nav-brand h2 {
    font-size: var(--font-size-xl);
    color: var(--primary-600);
    margin: 0;
}

@media (max-width: 1144px) {
    .nav-brand i {
        font-size: var(--font-size-xl);
    }
    
    .nav-brand h2 {
        font-size: var(--font-size-lg);
    }
    
    .nav-link {
        font-size: var(--font-size-xs);
        padding: var(--space-1) var(--space-2);
    }
    
    .nav-links {
        gap: var(--space-3);
    }
    
    .profile-avatar {
        width: 28px;
        height: 28px;
    }
    
    .notification-link {
        width: 32px;
        height: 32px;
    }
}

@media (max-width: 950px) {
    .nav-brand i {
        font-size: var(--font-size-lg);
    }
    
    .nav-brand h2 {
        font-size: var(--font-size-base);
    }
    
    .nav-link {
        font-size: 0.7rem;
        padding: var(--space-1) var(--space-1);
    }
    
    .nav-links {
        gap: var(--space-2);
    }
    
    .profile-avatar {
        width: 24px;
        height: 24px;
    }
    
    .notification-link {
        width: 28px;
        height: 28px;
    }
}

@media (max-width: 840px) {
    .nav-brand i {
        font-size: var(--font-size-base);
    }
    
    .nav-brand h2 {
        font-size: var(--font-size-sm);
    }
    
    .nav-link {
        font-size: 0.65rem;
        padding: 2px 4px;
    }
    
    .nav-links {
        gap: var(--space-1);
    }
    
    .profile-avatar {
        width: 20px;
        height: 20px;
    }
    
    .notification-link {
        width: 24px;
        height: 24px;
    }
    
    .notification-link i {
        font-size: var(--font-size-xs);
    }
}
.nav-brand a {
    color: inherit;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.nav-links {
    flex: 1;
    display: flex;
    justify-content: center;
    gap: var(--space-6);
    align-items: center;
}

.nav-links.logged-in {
    justify-content: flex-end;
}

.nav-links.hidden {
    display: none;
}

@media (max-width: 767px) {
    .nav-mobile {
        display: block;
    }
    
    .nav-links {
        position: fixed;
        top: 80px;
        left: 0;
        right: 0;
        background-color: white;
        flex-direction: column;
        justify-content: flex-start;
        padding: var(--space-6);
        box-shadow: var(--shadow-lg);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
        z-index: 50;
    }
    
    .nav-links.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
}

.nav-link {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--neutral-600);
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-600);
    background-color: var(--primary-50);
}

/* Notifications */
.nav-notifications {
    position: relative;
}

.notification-link {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--neutral-100);
    color: var(--neutral-600);
    transition: all 0.2s ease;
    text-decoration: none;
}

.notification-link:hover {
    background-color: var(--primary-100);
    color: var(--primary-600);
}

.notification-badge {
    position: absolute;
    top: -2px;
    right: -2px;
    background-color: var(--error-500);
    color: white;
    font-size: var(--font-size-xs);
    font-weight: 600;
    padding: 2px 6px;
    border-radius: 10px;
    min-width: 18px;
    height: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
}

/* Profile Dropdown */
.profile-dropdown {
    position: relative;
}

.profile-btn {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-2);
    border-radius: var(--radius-lg);
    transition: all 0.2s ease;
}

.profile-btn:hover {
    background-color: var(--neutral-100);
}

.profile-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--primary-200);
}

.profile-btn i {
    font-size: var(--font-size-xs);
    color: var(--neutral-500);
    transition: transform 0.2s ease;
}

.profile-btn.active i {
    transform: rotate(180deg);
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    right: auto;
    background-color: white;
    border: 1px solid var(--neutral-200);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    min-width: 250px;
    z-index: 100;
    animation: dropdownIn 0.2s ease;
    max-width: calc(100vw - 2rem);
}

/* Ensure dropdown doesn't go off-screen */
@media (max-width: 767px) {
    .dropdown-menu {
        left: -50px;
        right: auto;
        min-width: 200px;
    }
}

/* For very small screens */
@media (max-width: 480px) {
    .dropdown-menu {
        left: -80px;
        right: auto;
        min-width: 200px;
    }
}

/* Ensure dropdown stays within viewport */
@media (max-width: 320px) {
    .dropdown-menu {
        left: -60px;
        right: auto;
        min-width: 180px;
    }
}

@keyframes dropdownIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.dropdown-header {
    padding: var(--space-4);
}

.user-info h4 {
    font-size: var(--font-size-base);
    color: var(--neutral-800);
    margin-bottom: var(--space-1);
}

.user-info p {
    font-size: var(--font-size-sm);
    color: var(--neutral-500);
    margin: 0;
}

.dropdown-divider {
    height: 1px;
    background-color: var(--neutral-200);
    margin: 0;
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-4);
    color: var(--neutral-700);
    text-decoration: none;
    font-size: var(--font-size-sm);
    transition: all 0.2s ease;
    border: none;
    background: none;
    width: 100%;
    text-align: right;
    cursor: pointer;
}

.dropdown-item:hover {
    background-color: var(--neutral-50);
    color: var(--primary-600);
}

.dropdown-item i {
    width: 16px;
    color: var(--neutral-500);
}

.dropdown-item:hover i {
    color: var(--primary-600);
}

.logout-btn:hover {
    background-color: var(--error-50);
    color: var(--error-600);
}

.logout-btn:hover i {
    color: var(--error-600);
}

.nav-toggle {
    display: none;
    font-size: var(--font-size-xl);
    color: var(--neutral-600);
    cursor: pointer;
    padding: var(--space-2);
    border-radius: var(--radius-md);
    transition: all 0.2s ease;
}

.nav-toggle:hover {
    background-color: var(--neutral-100);
    color: var(--primary-600);
}

.nav-toggle {
    display: none;
    font-size: var(--font-size-xl);
    color: var(--neutral-600);
    cursor: pointer;
    padding: var(--space-2);
    border-radius: var(--radius-md);
    transition: all 0.2s ease;
}

.nav-toggle:hover {
    background-color: var(--neutral-100);
    color: var(--primary-600);
}

/* Mobile Menu */
.mobile-menu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 98;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.mobile-menu-overlay.show {
    opacity: 1;
}

.mobile-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 100%;
    background-color: white;
    z-index: 1001;
    transition: right 0.3s ease;
    box-shadow: var(--shadow-xl);
    overflow-y: auto;
}

.mobile-menu.show {
    right: 0;
}

.mobile-menu-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-4);
    border-bottom: 1px solid var(--neutral-200);
    background: linear-gradient(135deg, var(--primary-50), var(--secondary-50));
}

.mobile-brand {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.mobile-brand i {
    font-size: var(--font-size-xl);
    color: var(--primary-600);
}

.mobile-brand h3 {
    font-size: var(--font-size-base);
    color: var(--primary-600);
    margin: 0;
}

.mobile-close {
    background: none;
    border: none;
    font-size: var(--font-size-xl);
    color: var(--neutral-600);
    cursor: pointer;
    padding: var(--space-2);
    border-radius: var(--radius-md);
    transition: all 0.2s ease;
}

.mobile-close:hover {
    background-color: var(--neutral-100);
    color: var(--primary-600);
}

.mobile-menu-content {
    padding: var(--space-4);
    position: relative;
    z-index: 1002;
    background-color: white;
    min-height: calc(100vh - 80px);
}

.mobile-user-info {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-4);
    background-color: var(--primary-50);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-4);
}

.mobile-user-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--primary-200);
}

.mobile-user-details h4 {
    font-size: var(--font-size-base);
    color: var(--neutral-800);
    margin-bottom: var(--space-1);
}

.mobile-user-details p {
    font-size: var(--font-size-sm);
    color: var(--neutral-600);
    margin: 0;
}

.mobile-nav-divider {
    height: 1px;
    background-color: var(--neutral-200);
    margin: var(--space-4) 0;
}

.mobile-nav-link {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-4);
    color: var(--neutral-700);
    text-decoration: none;
    border-radius: var(--radius-lg);
    transition: all 0.2s ease;
    margin-bottom: var(--space-2);
    position: relative;
    background: none;
    border: none;
    width: 100%;
    text-align: right;
    cursor: pointer;
    font-size: var(--font-size-base);
}

.mobile-nav-link:hover {
    background-color: var(--primary-50);
    color: var(--primary-600);
}

.mobile-nav-link.primary {
    background: linear-gradient(135deg, var(--primary-600), var(--primary-700));
    color: white;
}

.mobile-nav-link.primary:hover {
    background: linear-gradient(135deg, var(--primary-700), var(--primary-800));
}

.mobile-nav-link.logout {
    color: var(--error-600);
}

.mobile-nav-link.logout:hover {
    background-color: var(--error-50);
    color: var(--error-700);
}

.mobile-nav-link i {
    width: 20px;
    text-align: center;
}

.mobile-notification-badge {
    position: absolute;
    left: var(--space-4);
    top: 50%;
    transform: translateY(-50%);
    background-color: var(--error-500);
    color: white;
    font-size: var(--font-size-xs);
    font-weight: 600;
    padding: 2px 6px;
    border-radius: 10px;
    min-width: 18px;
    height: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
}

@media (max-width: 767px) {
    .nav-notifications,
    .profile-dropdown {
        order: -1;
    }
    
    .dropdown-menu {
        position: static;
        box-shadow: none;
        border: none;
        border-radius: 0;
        margin-top: var(--space-4);
    }
}

/* Hero Section */
.hero {
    position: relative;
    padding: var(--space-24) 0;
    background: linear-gradient(135deg, var(--primary-50) 0%, var(--secondary-50) 50%, var(--accent-50) 100%);
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1;
}

.hero-shapes {
    position: relative;
    width: 100%;
    height: 100%;
}

.shape {
    position: absolute;
    border-radius: 50%;
    opacity: 0.1;
    animation: float 6s ease-in-out infinite;
}

.shape-1 {
    width: 200px;
    height: 200px;
    background: var(--primary-500);
    top: 10%;
    left: 10%;
    animation-delay: 0s;
}

.shape-2 {
    width: 150px;
    height: 150px;
    background: var(--secondary-500);
    top: 60%;
    right: 15%;
    animation-delay: 2s;
}

.shape-3 {
    width: 100px;
    height: 100px;
    background: var(--accent-500);
    bottom: 20%;
    left: 60%;
    animation-delay: 4s;
}

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(180deg); }
}

.hero .container {
    position: relative;
    z-index: 2;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-12);
    align-items: center;
}

@media (min-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr 1fr;
    }
}

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

@media (min-width: 1024px) {
    .hero-text {
        text-align: right;
    }
}

.hero-content h1 {
    font-size: var(--font-size-5xl);
    margin-bottom: var(--space-6);
    background: linear-gradient(135deg, var(--neutral-900), var(--primary-700));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: var(--font-size-lg);
    margin-bottom: var(--space-8);
    color: var(--neutral-600);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

@media (min-width: 1024px) {
    .hero-subtitle {
        margin-left: 0;
        margin-right: 0;
    }
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: var(--space-8);
    margin-bottom: var(--space-8);
    flex-wrap: wrap;
}

@media (min-width: 1024px) {
    .hero-stats {
        justify-content: flex-start;
    }
}

.stat-item {
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-2);
}

.stat-item i {
    font-size: var(--font-size-2xl);
    color: var(--primary-600);
}

.stat-number {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--neutral-900);
}

.stat-label {
    font-size: var(--font-size-sm);
    color: var(--neutral-600);
}

.hero-buttons {
    display: flex;
    gap: var(--space-4);
    justify-content: center;
    flex-wrap: wrap;
}

@media (min-width: 1024px) {
    .hero-buttons {
        justify-content: flex-start;
    }
}

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

.hero-card {
    background: white;
    border-radius: var(--radius-2xl);
    padding: var(--space-6);
    box-shadow: var(--shadow-2xl);
    max-width: 300px;
    width: 100%;
}

.hero-card.floating {
    animation: floatCard 3s ease-in-out infinite;
}

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

.card-header {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    margin-bottom: var(--space-4);
}

.teacher-avatar {
    position: relative;
}

.teacher-avatar img {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    object-fit: cover;
}

.status-indicator {
    position: absolute;
    bottom: 2px;
    right: 2px;
    width: 16px;
    height: 16px;
    background-color: var(--success-500);
    border: 2px solid white;
    border-radius: 50%;
}

.teacher-info h4 {
    margin-bottom: var(--space-1);
    font-size: var(--font-size-base);
}

.teacher-info p {
    font-size: var(--font-size-sm);
    color: var(--neutral-500);
    margin-bottom: var(--space-1);
}

.rating {
    display: flex;
    align-items: center;
    gap: var(--space-1);
}

.rating i {
    color: var(--warning-500);
    font-size: var(--font-size-sm);
}

.rating span {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--neutral-700);
}

.card-content p {
    font-size: var(--font-size-sm);
    color: var(--neutral-600);
    margin-bottom: var(--space-2);
}

.price {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--primary-600);
}

/* Section Header */
.section-header {
    text-align: center;
    margin-bottom: var(--space-16);
}

.section-header h2 {
    margin-bottom: var(--space-4);
}

.section-header p {
    font-size: var(--font-size-lg);
    max-width: 600px;
    margin: 0 auto;
}

/* Features Section */
.features {
    padding: var(--space-24) 0;
    background-color: white;
}

.features-grid {
    display: grid;
    gap: var(--space-8);
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
}

.feature-card {
    text-align: center;
    padding: var(--space-8);
    background: linear-gradient(135deg, var(--neutral-50), white);
    border: 1px solid var(--neutral-200);
    border-radius: var(--radius-2xl);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-500), var(--secondary-500), var(--accent-500));
    transform: scaleX(0);
    transition: transform var(--transition-normal);
}

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

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-200);
}

.feature-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--space-6);
    background: linear-gradient(135deg, var(--primary-100), var(--primary-200));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-normal);
}

.feature-icon i {
    font-size: var(--font-size-3xl);
    color: var(--primary-600);
}

.feature-card:hover .feature-icon {
    transform: scale(1.1);
    background: linear-gradient(135deg, var(--primary-200), var(--primary-300));
}

.feature-card h3 {
    margin-bottom: var(--space-4);
}

.feature-card p {
    margin-bottom: var(--space-6);
    line-height: var(--leading-relaxed);
}

.feature-link a {
    color: var(--primary-600);
    font-weight: 500;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    transition: all var(--transition-fast);
}

.feature-link a:hover {
    color: var(--primary-700);
    transform: translateX(-4px);
}

/* How It Works Section */
.how-it-works {
    padding: var(--space-24) 0;
    background: linear-gradient(135deg, var(--neutral-50), var(--primary-50));
}

.steps-container {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--space-8);
}

.step-item {
    text-align: center;
    max-width: 250px;
    position: relative;
}

.step-number {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-600), var(--primary-700));
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin: 0 auto var(--space-4);
    box-shadow: var(--shadow-lg);
}

.step-content {
    background: white;
    padding: var(--space-6);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
}

.step-content:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.step-icon {
    width: 50px;
    height: 50px;
    background: var(--primary-100);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--space-3);
}

.step-icon i {
    font-size: var(--font-size-xl);
    color: var(--primary-600);
}

.step-content h3 {
    margin-bottom: var(--space-3);
    font-size: var(--font-size-lg);
}

.step-connector {
    width: 60px;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-300), var(--primary-500));
    position: relative;
}

.step-connector::after {
    content: '';
    position: absolute;
    left: -8px;
    top: -6px;
    width: 0;
    height: 0;
    border-right: 8px solid var(--primary-500);
    border-top: 6px solid transparent;
    border-bottom: 6px solid transparent;
}

/* Stats Section */
.stats-section {
    padding: var(--space-20) 0;
    background: linear-gradient(135deg, var(--primary-600), var(--primary-800));
    color: white;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-8);
}

.stat-card {
    text-align: center;
    padding: var(--space-6);
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-xl);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: all var(--transition-normal);
}

.stat-card:hover {
    transform: translateY(-4px);
    background: rgba(255, 255, 255, 0.15);
}

.stat-icon {
    width: 60px;
    height: 60px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--space-4);
}

.stat-icon i {
    font-size: var(--font-size-2xl);
    color: white;
}

.stat-info h3 {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    margin-bottom: var(--space-2);
    color: white;
}

.stat-info p {
    color: rgba(255, 255, 255, 0.8);
    font-size: var(--font-size-base);
}

/* Testimonials Section */
.testimonials {
    padding: var(--space-24) 0;
    background-color: white;
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--space-8);
}

.testimonial-card {
    background: linear-gradient(135deg, var(--neutral-50), white);
    border: 1px solid var(--neutral-200);
    border-radius: var(--radius-2xl);
    padding: var(--space-8);
    transition: all var(--transition-normal);
    position: relative;
}

.testimonial-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-200);
}

.testimonial-content {
    margin-bottom: var(--space-6);
}

.quote-icon {
    width: 40px;
    height: 40px;
    background: var(--primary-100);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-4);
}

.quote-icon i {
    font-size: var(--font-size-lg);
    color: var(--primary-600);
}

.testimonial-content p {
    font-size: var(--font-size-base);
    line-height: var(--leading-relaxed);
    margin-bottom: var(--space-4);
    color: var(--neutral-700);
}

.testimonial-content .rating {
    justify-content: flex-start;
    margin-bottom: var(--space-4);
}

.testimonial-content .rating i {
    color: var(--warning-500);
}

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

.testimonial-author img {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    object-fit: cover;
}

.author-info h4 {
    margin-bottom: var(--space-1);
    font-size: var(--font-size-base);
    color: var(--neutral-800);
}

.author-info p {
    font-size: var(--font-size-sm);
    color: var(--neutral-500);
}

/* CTA Section */
.cta-section {
    padding: var(--space-24) 0;
    background: linear-gradient(135deg, var(--primary-600), var(--secondary-600));
    color: white;
    text-align: center;
}

.cta-content h2 {
    color: white;
    margin-bottom: var(--space-4);
    font-size: var(--font-size-4xl);
}

.cta-content p {
    font-size: var(--font-size-lg);
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--space-8);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.cta-buttons {
    display: flex;
    gap: var(--space-4);
    justify-content: center;
    flex-wrap: wrap;
}

.cta-buttons .btn-primary {
    background: white;
    color: var(--primary-600);
    border-color: white;
}

.cta-buttons .btn-primary:hover {
    background: var(--neutral-100);
    transform: translateY(-2px);
}

.cta-buttons .btn-secondary {
    background: transparent;
    color: white;
    border-color: rgba(255, 255, 255, 0.5);
}

.cta-buttons .btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: white;
}

/* Footer */
.footer {
    background: linear-gradient(135deg, var(--neutral-900), var(--neutral-800));
    color: var(--neutral-300);
    padding: var(--space-16) 0 var(--space-8);
}

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

.footer-section h3,
.footer-section h4 {
    color: white;
    margin-bottom: var(--space-4);
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    margin-bottom: var(--space-4);
}

.footer-brand i {
    font-size: var(--font-size-2xl);
    color: var(--primary-400);
}

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

.social-links {
    display: flex;
    gap: var(--space-3);
}

.social-links a {
    width: 40px;
    height: 40px;
    background: var(--neutral-700);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--neutral-300);
    transition: all var(--transition-fast);
}

.social-links a:hover {
    background: var(--primary-600);
    color: white;
    transform: translateY(-2px);
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: var(--space-2);
}

.footer-section ul li a {
    color: var(--neutral-400);
    transition: color var(--transition-fast);
}

.footer-section ul li a:hover {
    color: var(--primary-400);
}

.contact-info p {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    margin-bottom: var(--space-2);
}

.contact-info i {
    color: var(--primary-400);
    width: 20px;
}

.footer-bottom {
    border-top: 1px solid var(--neutral-700);
    padding-top: var(--space-6);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-4);
}

.footer-links {
    display: flex;
    gap: var(--space-6);
}

.footer-links a {
    color: var(--neutral-400);
    font-size: var(--font-size-sm);
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: var(--primary-400);
}

/* Loading Component */
.loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 100;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--neutral-300);
    border-top: 4px solid var(--primary-600);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

.hidden {
    display: none !important;
}

/* Button Loading State */
.btn-loader {
    width: 16px;
    height: 16px;
    border: 2px solid transparent;
    border-top: 2px solid currentColor;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

.btn:has(.btn-loader:not(.hidden)) .btn-text {
    opacity: 0;
}

/* Utility Classes */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.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); }

.p-4 { padding: var(--space-4); }
.p-6 { padding: var(--space-6); }
.p-8 { padding: var(--space-8); }

/* Responsive Design */
@media (max-width: 767px) {
    .nav-links {
        display: none;
    }
    
    .nav-toggle {
        display: block;
    }
    
    .hero {
        padding: var(--space-16) 0;
    }
    
    .hero-content h1 {
        font-size: var(--font-size-4xl);
    }
    
    .hero-stats {
        gap: var(--space-4);
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .hero-buttons .btn {
        min-width: 200px;
    }
    
    .features {
        padding: var(--space-16) 0;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .steps-container {
        flex-direction: column;
    }
    
    .step-connector {
        width: 2px;
        height: 60px;
        transform: rotate(90deg);
    }
    
    .step-connector::after {
        left: -6px;
        top: 52px;
        border-right: 6px solid transparent;
        border-left: 6px solid transparent;
        border-top: 8px solid var(--primary-500);
        border-bottom: 0;
    }
    
    .testimonials-grid {
        grid-template-columns: 1fr;
    }
    
    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
}

@media (min-width: 768px) and (max-width: 1023px) {
    .hero-content h1 {
        font-size: var(--font-size-5xl);
    }
    
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .testimonials-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

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

/* Scroll animations */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.animate-on-scroll.animated {
    opacity: 1;
    transform: translateY(0);
}

/* Enhanced hover effects */
.hover-lift {
    transition: transform var(--transition-normal);
}

.hover-lift:hover {
    transform: translateY(-4px);
}

/* Focus styles for accessibility */
.btn:focus,
input:focus,
select:focus,
textarea:focus,
a:focus {
    outline: 2px solid var(--primary-500);
    outline-offset: 2px;
}

/* Print styles */
@media print {
    .navbar,
    .footer,
    .btn,
    .loader {
        display: none !important;
    }
    
    body {
        background: white !important;
        color: black !important;
    }
    
    .hero,
    .features,
    .testimonials {
        background: white !important;
    }
}