/**
 * EduFly Public Pages - Shared Styles
 * Modern, Professional Design System
 */

:root {
    --primary: #4f46e5;
    --primary-dark: #4338ca;
    --primary-light: #818cf8;
    --secondary: #06b6d4;
    --accent: #f59e0b;
    --success: #10b981;
    --danger: #ef4444;
    --warning: #f59e0b;
    --dark: #0f172a;
    --gray-900: #1e293b;
    --gray-800: #1e293b;
    --gray-700: #334155;
    --gray-600: #475569;
    --gray-500: #64748b;
    --gray-400: #94a3b8;
    --gray-300: #cbd5e1;
    --gray-200: #e2e8f0;
    --gray-100: #f1f5f9;
    --gray-50: #f8fafc;
    --white: #ffffff;
    --gradient-primary: linear-gradient(135deg, #4f46e5, #06b6d4);
    --gradient-accent: linear-gradient(135deg, #f59e0b, #fbbf24);
    --gradient-hero: linear-gradient(135deg, #1e1b4b 0%, #312e81 50%, #4338ca 100%);
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    --shadow-md: 0 10px 15px -3px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 25px 50px -12px rgb(0 0 0 / 0.25);
    --shadow-xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);
    --radius-sm: 8px;
    --radius: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;
}

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

body {
    font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--white);
    color: var(--dark);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    color: var(--dark);
}

h1 { font-size: 3rem; }
h2 { font-size: 2.5rem; }
h3 { font-size: 2rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1rem; }

p {
    color: var(--gray-600);
    line-height: 1.7;
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: all 0.3s ease;
}

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

/* Navbar */
.navbar-public {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 1rem 0;
    transition: all 0.3s ease;
    background: transparent;
}

.navbar-public.scrolled,
.navbar-public.solid {
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    box-shadow: var(--shadow);
    padding: 0.5rem 0;
}

.navbar-public .navbar-brand {
    font-weight: 800;
    font-size: 1.5rem;
    color: var(--white) !important;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.navbar-public.scrolled .navbar-brand,
.navbar-public.solid .navbar-brand {
    color: var(--primary) !important;
}

.navbar-public .navbar-brand i {
    font-size: 1.8rem;
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.navbar-public .nav-link {
    color: rgba(255, 255, 255, 0.9) !important;
    font-weight: 500;
    padding: 0.5rem 1rem !important;
    transition: all 0.3s ease;
}

.navbar-public.scrolled .nav-link,
.navbar-public.solid .nav-link {
    color: var(--gray-700) !important;
}

.navbar-public .nav-link:hover {
    color: var(--accent) !important;
}

.navbar-public .navbar-toggler {
    border: none;
    padding: 0.5rem;
}

.navbar-public .navbar-toggler-icon {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%28255, 255, 255, 0.9%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

.navbar-public.scrolled .navbar-toggler-icon,
.navbar-public.solid .navbar-toggler-icon {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%2879, 70, 229, 1%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

.btn-nav {
    background: var(--gradient-accent);
    color: var(--dark) !important;
    font-weight: 600;
    padding: 0.6rem 1.5rem !important;
    border-radius: var(--radius-full);
    border: none;
    transition: all 0.3s ease;
}

.btn-nav:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(245, 158, 11, 0.4);
}

/* Page Header */
.page-header {
    background: var(--gradient-hero);
    padding: 160px 0 100px;
    position: relative;
    overflow: hidden;
}

.page-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%239C92AC' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.page-header .blob {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.5;
}

.page-header .blob-1 {
    width: 400px;
    height: 400px;
    background: linear-gradient(135deg, #06b6d4, #3b82f6);
    top: -100px;
    right: -100px;
}

.page-header .blob-2 {
    width: 300px;
    height: 300px;
    background: linear-gradient(135deg, #f59e0b, #ef4444);
    bottom: -50px;
    left: -50px;
}

.page-header-content {
    position: relative;
    z-index: 2;
    text-align: center;
}

.page-header .page-title {
    font-size: 3rem;
    font-weight: 800;
    color: var(--white);
    margin-bottom: 1rem;
}

.page-header .page-subtitle {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.8);
    max-width: 600px;
    margin: 0 auto;
}

.page-header .breadcrumb {
    justify-content: center;
    margin-top: 1.5rem;
}

.page-header .breadcrumb-item,
.page-header .breadcrumb-item a {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9rem;
}

.page-header .breadcrumb-item.active {
    color: var(--accent);
}

.page-header .breadcrumb-item + .breadcrumb-item::before {
    color: rgba(255, 255, 255, 0.5);
}

/* Sections */
.section {
    padding: 100px 0;
}

.section-light {
    background: var(--gray-50);
}

.section-dark {
    background: var(--dark);
    color: var(--white);
}

.section-dark h2,
.section-dark h3,
.section-dark h4 {
    color: var(--white);
}

.section-dark p {
    color: rgba(255, 255, 255, 0.7);
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 4rem;
}

.section-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: linear-gradient(135deg, rgba(79, 70, 229, 0.1), rgba(6, 182, 212, 0.1));
    color: var(--primary);
    font-weight: 600;
    font-size: 0.875rem;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-full);
    margin-bottom: 1rem;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--dark);
    margin-bottom: 1rem;
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--gray-500);
}

/* Cards */
.card-modern {
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: 2rem;
    box-shadow: var(--shadow);
    border: 1px solid var(--gray-100);
    transition: all 0.4s ease;
    height: 100%;
}

.card-modern:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.card-modern .card-icon {
    width: 70px;
    height: 70px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
    margin-bottom: 1.5rem;
    color: var(--white);
}

.card-icon.purple { background: linear-gradient(135deg, #818cf8, #6366f1); }
.card-icon.cyan { background: linear-gradient(135deg, #22d3ee, #06b6d4); }
.card-icon.amber { background: linear-gradient(135deg, #fbbf24, #f59e0b); }
.card-icon.green { background: linear-gradient(135deg, #34d399, #10b981); }
.card-icon.pink { background: linear-gradient(135deg, #f472b6, #ec4899); }
.card-icon.blue { background: linear-gradient(135deg, #60a5fa, #3b82f6); }
.card-icon.red { background: linear-gradient(135deg, #f87171, #ef4444); }
.card-icon.indigo { background: linear-gradient(135deg, #a5b4fc, #6366f1); }

.card-modern .card-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 0.75rem;
}

.card-modern .card-text {
    color: var(--gray-500);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* Buttons */
.btn-primary-gradient {
    background: var(--gradient-primary);
    color: var(--white);
    font-weight: 600;
    padding: 0.875rem 2rem;
    border-radius: var(--radius-full);
    border: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s ease;
    text-decoration: none;
}

.btn-primary-gradient:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 35px rgba(79, 70, 229, 0.4);
    color: var(--white);
}

.btn-accent-gradient {
    background: var(--gradient-accent);
    color: var(--dark);
    font-weight: 600;
    padding: 0.875rem 2rem;
    border-radius: var(--radius-full);
    border: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s ease;
    text-decoration: none;
}

.btn-accent-gradient:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 35px rgba(245, 158, 11, 0.4);
    color: var(--dark);
}

.btn-outline-light-custom {
    background: transparent;
    border: 2px solid rgba(255, 255, 255, 0.3);
    color: var(--white);
    font-weight: 600;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-full);
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-outline-light-custom:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.5);
    color: var(--white);
}

/* Forms */
.form-control-modern {
    border: 2px solid var(--gray-200);
    border-radius: var(--radius);
    padding: 0.875rem 1rem;
    font-size: 1rem;
    transition: all 0.3s ease;
    background: var(--white);
}

.form-control-modern:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(79, 70, 229, 0.1);
    outline: none;
}

.form-label-modern {
    font-weight: 600;
    color: var(--gray-700);
    margin-bottom: 0.5rem;
}

/* Pricing Cards */
.pricing-card {
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: 2.5rem;
    box-shadow: var(--shadow);
    border: 2px solid var(--gray-100);
    transition: all 0.4s ease;
    height: 100%;
    position: relative;
}

.pricing-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
}

.pricing-card.featured {
    border-color: var(--primary);
    transform: scale(1.05);
}

.pricing-card.featured:hover {
    transform: scale(1.05) translateY(-10px);
}

.pricing-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--gradient-primary);
    color: var(--white);
    padding: 0.5rem 1.5rem;
    border-radius: var(--radius-full);
    font-size: 0.8rem;
    font-weight: 700;
}

.pricing-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 0.5rem;
}

.pricing-price {
    font-size: 3rem;
    font-weight: 800;
    color: var(--primary);
    margin: 1.5rem 0;
}

.pricing-price span {
    font-size: 1rem;
    font-weight: 500;
    color: var(--gray-500);
}

.pricing-features {
    list-style: none;
    padding: 0;
    margin: 2rem 0;
}

.pricing-features li {
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--gray-100);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--gray-600);
}

.pricing-features li:last-child {
    border-bottom: none;
}

.pricing-features li i {
    color: var(--success);
    font-size: 1rem;
}

/* FAQ Accordion */
.faq-item {
    background: var(--white);
    border-radius: var(--radius-lg);
    margin-bottom: 1rem;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--gray-100);
    overflow: hidden;
}

.faq-question {
    padding: 1.5rem;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 600;
    color: var(--dark);
    transition: all 0.3s ease;
}

.faq-question:hover {
    background: var(--gray-50);
}

.faq-question i {
    transition: transform 0.3s ease;
    color: var(--primary);
}

.faq-item.active .faq-question i {
    transform: rotate(180deg);
}

.faq-answer {
    padding: 0 1.5rem;
    max-height: 0;
    overflow: hidden;
    transition: all 0.3s ease;
    color: var(--gray-600);
}

.faq-item.active .faq-answer {
    padding: 0 1.5rem 1.5rem;
    max-height: 500px;
}

/* Contact Form */
.contact-card {
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: 3rem;
    box-shadow: var(--shadow-lg);
}

.contact-info-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 2rem;
}

.contact-info-icon {
    width: 50px;
    height: 50px;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    flex-shrink: 0;
}

/* Footer */
.footer-public {
    background: var(--gray-900);
    color: var(--gray-300);
    padding: 80px 0 30px;
}

.footer-brand {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--white);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.footer-brand i {
    color: var(--accent);
}

.footer-desc {
    color: var(--gray-500);
    margin-bottom: 1.5rem;
    max-width: 300px;
}

.footer-social {
    display: flex;
    gap: 1rem;
}

.footer-social a {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gray-300);
    transition: all 0.3s ease;
}

.footer-social a:hover {
    background: var(--primary);
    color: var(--white);
    transform: translateY(-3px);
}

.footer-title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 1.5rem;
}

.footer-links {
    list-style: none;
    padding: 0;
}

.footer-links li {
    margin-bottom: 0.75rem;
}

.footer-links a {
    color: var(--gray-500);
    text-decoration: none;
    transition: all 0.3s ease;
}

.footer-links a:hover {
    color: var(--accent);
    padding-left: 5px;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    margin-top: 3rem;
    padding-top: 2rem;
    text-align: center;
    color: var(--gray-500);
}

/* Alerts */
.alert {
    border-radius: var(--radius);
    border: none;
}

.alert-info {
    background: linear-gradient(135deg, rgba(6, 182, 212, 0.1), rgba(79, 70, 229, 0.1));
    color: var(--primary);
}

.alert-success {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.1), rgba(34, 211, 153, 0.1));
    color: var(--success);
}

.alert-warning {
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.1), rgba(251, 191, 36, 0.1));
    color: #92400e;
}

.alert-danger {
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.1), rgba(248, 113, 113, 0.1));
    color: var(--danger);
}

/* Responsive */
@media (max-width: 992px) {
    h1 { font-size: 2.5rem; }
    h2 { font-size: 2rem; }
    .page-header { padding: 140px 0 80px; }
    .page-header .page-title { font-size: 2.5rem; }
    .section { padding: 80px 0; }
    .section-title { font-size: 2rem; }
    .pricing-card.featured { transform: scale(1); }
    .pricing-card.featured:hover { transform: translateY(-10px); }
}

@media (max-width: 768px) {
    h1 { font-size: 2rem; }
    h2 { font-size: 1.75rem; }
    .page-header { padding: 120px 0 60px; }
    .page-header .page-title { font-size: 2rem; }
    .section { padding: 60px 0; }
    .section-title { font-size: 1.75rem; }
    .navbar-public .navbar-collapse {
        background: var(--white);
        padding: 1rem;
        border-radius: var(--radius);
        margin-top: 1rem;
        box-shadow: var(--shadow-lg);
    }
    .navbar-public .navbar-collapse .nav-link {
        color: var(--dark) !important;
    }
    .contact-card { padding: 2rem; }
    .pricing-card { padding: 2rem; }
    .pricing-price { font-size: 2.5rem; }
}

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

.animate-fade-in-up {
    animation: fadeInUp 0.6s ease forwards;
}

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

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

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

.bg-gradient-accent {
    background: var(--gradient-accent);
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--gray-100);
}

::-webkit-scrollbar-thumb {
    background: var(--gray-400);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--gray-500);
}

/* Selection */
::selection {
    background: var(--primary);
    color: var(--white);
}