/**
 * Modern SaaS & EdTech Global Design System
 * Made with heart ❤️ by Web Era Solutions
 */

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&family=Space+Grotesk:wght@500;700&display=swap');

:root {
    --primary: #4F46E5;
    --primary-hover: #4338CA;
    --primary-light: #EEF2FF;
    --primary-gradient: linear-gradient(135deg, #4F46E5 0%, #7C3AED 100%);
    --secondary-gradient: linear-gradient(135deg, #06B6D4 0%, #3B82F6 100%);
    --accent-emerald: #10B981;
    --accent-emerald-light: #ECFDF5;
    --accent-rose: #F43F5E;
    --accent-amber: #F59E0B;
    --dark-surface: #0F172A;
    --dark-card: #1E293B;
    --light-bg: #F8FAFC;
    --border-color: #E2E8F0;
    --text-primary: #1E293B;
    --text-secondary: #64748B;
    --text-muted: #94A3B8;
    --card-radius: 16px;
    --btn-radius: 10px;
    --transition-fast: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-smooth: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.07);
    --shadow-lg: 0 10px 25px -5px rgba(0, 0, 0, 0.08), 0 8px 10px -6px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 30px -10px rgba(79, 70, 229, 0.15);
}

* {
    box-sizing: border-box;
}

body {
    font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--light-bg);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6, .font-heading {
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-weight: 700;
    color: var(--dark-surface);
    letter-spacing: -0.02em;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}
::-webkit-scrollbar-track {
    background: #F1F5F9;
}
::-webkit-scrollbar-thumb {
    background: #CBD5E1;
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: #94A3B8;
}

/* Navbar */
.navbar-custom {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1020;
    transition: var(--transition-smooth);
}
.navbar-custom.scrolled {
    box-shadow: var(--shadow-md);
    padding: 0.75rem 0;
}
.navbar-brand {
    font-weight: 800;
    font-size: 1.45rem;
    color: var(--dark-surface);
    display: flex;
    align-items: center;
    gap: 0.6rem;
}
.brand-logo-img {
    transition: transform var(--transition-fast);
}
.navbar-brand:hover .brand-logo-img,
.sidebar-brand:hover .brand-logo-img {
    transform: scale(1.05) rotate(-2deg);
}
.navbar-brand span.brand-text {
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}
.nav-link {
    font-weight: 600;
    color: var(--text-secondary);
    padding: 0.5rem 0.9rem !important;
    border-radius: 8px;
    transition: var(--transition-fast);
}
.nav-link:hover, .nav-link.active {
    color: var(--primary);
    background: var(--primary-light);
}

/* Hero Section */
.hero-section {
    position: relative;
    padding: 5rem 0 6rem;
    background: radial-gradient(circle at 80% 20%, rgba(79, 70, 229, 0.08) 0%, rgba(248, 250, 252, 0) 70%),
                radial-gradient(circle at 10% 80%, rgba(6, 182, 212, 0.06) 0%, rgba(248, 250, 252, 0) 60%);
    overflow: hidden;
}
.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.4rem 1rem;
    background: var(--primary-light);
    color: var(--primary);
    border: 1px solid rgba(79, 70, 229, 0.2);
    border-radius: 30px;
    font-size: 0.875rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    animation: fadeInDown 0.6s ease;
}
.hero-title {
    font-size: 3.5rem;
    line-height: 1.15;
    margin-bottom: 1.5rem;
}
@media (max-width: 991px) {
    .hero-title { font-size: 2.5rem; }
    .hero-section { padding: 3rem 0 4rem; }
}
@media (max-width: 576px) {
    .hero-title { font-size: 2rem; }
}
.gradient-text {
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}
.hero-subtitle {
    font-size: 1.15rem;
    color: var(--text-secondary);
    margin-bottom: 2.25rem;
    max-width: 580px;
}

/* Buttons */
.btn-primary-gradient {
    background: var(--primary-gradient);
    color: #ffffff;
    font-weight: 600;
    border: none;
    border-radius: var(--btn-radius);
    padding: 0.75rem 1.6rem;
    box-shadow: 0 4px 14px rgba(79, 70, 229, 0.35);
    transition: var(--transition-fast);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}
.btn-primary-gradient:hover {
    color: #ffffff;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(79, 70, 229, 0.45);
}
.btn-outline-custom {
    border: 1.5px solid var(--border-color);
    background: #ffffff;
    color: var(--dark-surface);
    font-weight: 600;
    border-radius: var(--btn-radius);
    padding: 0.75rem 1.6rem;
    transition: var(--transition-fast);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}
.btn-outline-custom:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: var(--primary-light);
    transform: translateY(-2px);
}

/* Cards */
.saas-card {
    background: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: var(--card-radius);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-smooth);
    overflow: hidden;
    position: relative;
}
.saas-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(79, 70, 229, 0.3);
}

/* Course Card */
.course-card {
    height: 100%;
    display: flex;
    flex-direction: column;
}
.course-card .card-img-wrap {
    position: relative;
    height: 190px;
    background: linear-gradient(135deg, #1E293B, #0F172A);
    overflow: hidden;
}
.course-card .card-img-wrap img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-smooth);
}
.course-card:hover .card-img-wrap img {
    transform: scale(1.05);
}
.course-card .card-body {
    padding: 1.35rem;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}
.course-category-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--primary);
    background: var(--primary-light);
    padding: 0.3rem 0.75rem;
    border-radius: 6px;
    margin-bottom: 0.75rem;
}
.course-price-box {
    display: flex;
    align-items: baseline;
    gap: 0.5rem;
    margin-top: auto;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
}
.course-price {
    font-size: 1.35rem;
    font-weight: 800;
    color: var(--dark-surface);
}
.course-price-old {
    font-size: 0.9rem;
    color: var(--text-muted);
    text-decoration: line-through;
}

/* Stats Counter Box */
.stat-counter-box {
    padding: 1.75rem 1.5rem;
    background: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: var(--card-radius);
    text-align: center;
    transition: var(--transition-smooth);
}
.stat-counter-box:hover {
    border-color: var(--primary);
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}
.stat-counter-number {
    font-size: 2.25rem;
    font-weight: 800;
    color: var(--dark-surface);
    margin-bottom: 0.25rem;
}
.stat-counter-label {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-secondary);
}

/* Feature Showcase */
.feature-icon-wrapper {
    width: 60px;
    height: 60px;
    border-radius: 14px;
    background: var(--primary-light);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: 1.25rem;
    transition: var(--transition-fast);
}
.saas-card:hover .feature-icon-wrapper {
    background: var(--primary-gradient);
    color: #ffffff;
    transform: scale(1.08);
}

/* Live Class Badge */
.badge-live-pulse {
    background: #EF4444;
    color: #ffffff;
    font-weight: 700;
    padding: 0.35rem 0.75rem;
    border-radius: 20px;
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.75rem;
    animation: pulseRed 1.8s infinite;
}
@keyframes pulseRed {
    0% { box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.6); }
    70% { box-shadow: 0 0 0 8px rgba(239, 68, 68, 0); }
    100% { box-shadow: 0 0 0 0 rgba(239, 68, 68, 0); }
}

/* Footer */
.footer-main {
    background: var(--dark-surface);
    color: #94A3B8;
    padding: 4.5rem 0 2rem;
    border-top: 1px solid #1E293B;
}
.footer-main h5 {
    color: #FFFFFF;
    font-size: 1.1rem;
    margin-bottom: 1.25rem;
}
.footer-links {
    list-style: none;
    padding: 0;
    margin: 0;
}
.footer-links li {
    margin-bottom: 0.65rem;
}
.footer-links a {
    color: #94A3B8;
    text-decoration: none;
    transition: var(--transition-fast);
    font-size: 0.95rem;
}
.footer-links a:hover {
    color: #FFFFFF;
    padding-left: 4px;
}
.footer-bottom {
    margin-top: 3.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid #1E293B;
    text-align: center;
    font-size: 0.9rem;
}
.footer-bottom .brand-highlight {
    color: #F43F5E;
    font-weight: 700;
}

/* Keyframe Animations */
@keyframes fadeInDown {
    from { opacity: 0; transform: translateY(-20px); }
    to { opacity: 1; transform: translateY(0); }
}