:root {
    --primary-black: #111111;
    --secondary-black: #1a1a1a;
    --primary-white: #ffffff;
    --bg-light: #f9f9f9;
    --text-muted: #666666;
    --accent-green: #10b981;
    --border-color: #e5e5e5;
    --font-main: 'Inter', sans-serif;
    --font-heading: 'Outfit', sans-serif;
    --transition: all 0.4s cubic-bezier(0.23, 1, 0.32, 1);
    --glass-bg: rgba(255, 255, 255, 0.7);
    --glass-border: rgba(255, 255, 255, 0.4);
}

/* Base Styles */
html {
    scroll-behavior: smooth;
}

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Navbar */
.navbar {
    height: 80px;
    display: flex;
    align-items: center;
    position: fixed;
    top: 0;
    width: 100%;
    background: white;
    /* Fallback */
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    z-index: 2000;
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.hero-content {
    position: relative;
    z-index: 10;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.25rem;
    font-weight: 700;
    font-family: var(--font-heading);
}

.logo-icon {
    background: var(--primary-black);
    color: white;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
    font-size: 1.1rem;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2.5rem;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-muted);
    font-weight: 500;
    font-size: 0.95rem;
    transition: var(--transition);
}

.nav-links a:hover {
    color: var(--primary-black);
}

/* Buttons */
.btn {
    padding: 0.75rem 1.5rem;
    border-radius: 6px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    font-family: var(--font-main);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
}

.btn-dark {
    background: var(--primary-black);
    color: white;
}

.btn-dark:hover {
    background: #333;
    transform: translateY(-2px);
}

.btn-primary {
    background: var(--primary-black);
    color: white;
    padding: 1rem 2rem;
    font-size: 1rem;
}

.btn-primary:hover {
    background: #333;
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--border-color);
    padding: 1rem 2rem;
    font-size: 1rem;
}

.btn-outline:hover {
    background: #f5f5f5;
    transform: translateY(-2px);
}

.nav-cta-mobile {
    display: none;
}

/* Hero Section Enhancements */
.hero {
    padding: 160px 0 100px;
    text-align: center;
    position: relative;
    overflow: hidden;
    min-height: 85vh;
    min-height: 85dvh;
    display: flex;
    align-items: center;
}

.hero::before {
    content: '';
    position: absolute;
    top: -10%;
    left: -10%;
    width: 40%;
    height: 60%;
    background: radial-gradient(circle, rgba(16, 185, 129, 0.05) 0%, transparent 70%);
    filter: blur(80px);
    z-index: -1;
    animation: float 10s infinite alternate ease-in-out;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: -10%;
    right: -10%;
    width: 40%;
    height: 60%;
    background: radial-gradient(circle, rgba(0, 0, 0, 0.03) 0%, transparent 70%);
    filter: blur(80px);
    z-index: -1;
    animation: float 12s infinite alternate-reverse ease-in-out;
}

@keyframes float {
    from {
        transform: translate(0, 0);
    }

    to {
        transform: translate(50px, 100px);
    }
}

.grid-overlay {
    position: absolute;
    inset: 0;
    background-image: linear-gradient(to right, #f2f2f2 1px, transparent 1px),
        linear-gradient(to bottom, #f2f2f2 1px, transparent 1px);
    background-size: 40px 40px;
    mask-image: radial-gradient(circle at center, black, transparent 80%);
    pointer-events: none;
    z-index: -1;
}

.decorative-svg {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: -2;
    opacity: 0.1;
    pointer-events: none;
    animation: rotateSVG 60s linear infinite;
}

@keyframes rotateSVG {
    from {
        transform: translate(-50%, -50%) rotate(0deg);
    }

    to {
        transform: translate(-50%, -50%) rotate(360deg);
    }
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: #f0fdf4;
    border: 1px solid #d1fae5;
    padding: 0.5rem 1rem;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 500;
    color: #065f46;
    margin-bottom: 2rem;
}

.status-dot {
    width: 6px;
    height: 6px;
    background: var(--accent-green);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% {
        transform: scale(1);
        opacity: 1;
    }

    50% {
        transform: scale(1.5);
        opacity: 0.5;
    }

    100% {
        transform: scale(1);
        opacity: 1;
    }
}

h1 {
    font-family: var(--font-heading);
    font-size: 4.5rem;
    line-height: 1.1;
    font-weight: 700;
    margin-bottom: 1.5rem;
    letter-spacing: -0.02em;
}

.gradient-text {
    background: linear-gradient(90deg, #111 0%, #444 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-muted);
    max-width: 700px;
    margin: 0 auto 2.5rem;
}

.hero-actions {
    display: flex;
    justify-content: center;
    gap: 1rem;
}

/* Stats Section */
.stats {
    padding: 4rem 0;
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
    background: #fafafa;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    text-align: center;
}

.stat-item h3 {
    font-size: 2.5rem;
    font-family: var(--font-heading);
    margin-bottom: 0.25rem;
}

.stat-item p {
    color: var(--text-muted);
    font-weight: 500;
}

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

.bg-light {
    background-color: var(--bg-light);
}

.section-tag {
    display: inline-block;
    color: var(--text-muted);
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    margin-bottom: 1rem;
    text-transform: uppercase;
}

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

.section-header h2 {
    font-size: 3rem;
    font-family: var(--font-heading);
    margin-bottom: 1rem;
}

/* About Section */
.about {
    position: relative;
    background-image: radial-gradient(#e5e5e5 1px, transparent 1px);
    background-size: 30px 30px;
}

.grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-text h2 {
    font-size: 3rem;
    font-family: var(--font-heading);
    line-height: 1.2;
    margin-bottom: 1.5rem;
}

.check-list {
    list-style: none;
    margin-top: 2rem;
}

.check-list li {
    position: relative;
    padding-left: 2rem;
    margin-bottom: 1rem;
    font-weight: 500;
}

.check-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--accent-green);
    font-weight: 900;
}

.image-box {
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.image-box img {
    width: 100%;
    display: block;
    transition: transform 0.5s ease;
}

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

/* Course Cards Enhanced */
.course-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.course-card {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    padding: 3.5rem 2.5rem;
    border-radius: 24px;
    border: 1px solid var(--border-color);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.course-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--primary-black);
    transform: scaleX(0);
    transform-origin: left;
    transition: var(--transition);
}

.course-card:hover {
    transform: translateY(-12px) scale(1.02);
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.08);
    border-color: rgba(0, 0, 0, 0.1);
}

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

.course-icon {
    font-size: 3rem;
    margin-bottom: 2rem;
    display: inline-block;
    transition: transform 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.course-card:hover .course-icon {
    transform: scale(1.2) rotate(5deg);
}

.course-card h3 {
    font-family: var(--font-heading);
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

/* Subtle Shimmer for High Score */
.results-showcase {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 2rem;
}

.result-box {
    padding: 3rem;
    text-align: center;
    border: 1px solid var(--border-color);
    border-radius: 12px;
}

.result-box.highlighted {
    background: var(--primary-black);
    color: white;
}

.result-box h4 {
    font-size: 3.5rem;
    font-family: var(--font-heading);
    margin-bottom: 0.5rem;
}

/* Contact Section */
.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    background: #fff;
    border: 1px solid var(--border-color);
    border-radius: 24px;
    overflow: hidden;
}

.contact-info {
    padding: 4rem;
    background: #fafafa;
}

.contact-info h2 {
    font-size: 2.5rem;
    font-family: var(--font-heading);
    margin-bottom: 1.5rem;
}

.contact-details {
    margin-top: 3rem;
}

.detail-item {
    margin-bottom: 2rem;
}

.detail-item strong {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-muted);
}

.contact-form {
    padding: 4rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-black);
    box-shadow: 0 0 0 4px rgba(0, 0, 0, 0.05);
}

.w-full {
    width: 100%;
    display: flex;
    justify-content: center;
}

/* Footer */
.footer {
    padding: 4rem 0;
    border-top: 1px solid var(--border-color);
    text-align: center;
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2rem;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 700;
    font-family: var(--font-heading);
}

.footer-socials {
    display: flex;
    gap: 2rem;
}

.footer-socials a {
    text-decoration: none;
    color: var(--text-muted);
    font-weight: 500;
}

/* Animations */
.fade-in {
    opacity: 0;
    animation: fadeIn 0.8s forwards;
}

.fade-in-up {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

/* Only hide if JS animation logic is active */
.animations-enabled .fade-in-up:not(.reveal) {
    opacity: 0;
    transform: translateY(20px);
}

.fade-in-up.reveal {
    opacity: 1;
    transform: translateY(0);
}

.delay-1 {
    transition-delay: 0.2s;
}

.delay-2 {
    transition-delay: 0.4s;
}

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

@keyframes fadeInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Mobile Responsive */
@media (max-width: 768px) {
    h1 {
        font-size: 2.5rem;
    }

    .nav-links {
        display: none;
        position: absolute;
        top: 80px;
        left: 0;
        width: 100%;
        background: white;
        flex-direction: column;
        padding: 2rem;
        gap: 1.5rem;
        border-bottom: 1px solid var(--border-color);
        box-shadow: 0 10px 20px rgba(0, 0, 0, 0.05);
        z-index: 1001;
        max-height: calc(100vh - 80px);
        overflow-y: auto;
    }

    .nav-links.active {
        display: flex;
    }

    .menu-toggle {
        display: flex;
        flex-direction: column;
        gap: 5px;
        cursor: pointer;
    }

    .menu-toggle span {
        width: 25px;
        height: 2px;
        background: var(--primary-black);
        transition: var(--transition);
    }

    .menu-toggle.active span:nth-child(1) {
        transform: translateY(7px) rotate(45deg);
    }

    .menu-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .menu-toggle.active span:nth-child(3) {
        transform: translateY(-7px) rotate(-45deg);
    }

    .nav-cta {
        display: none;
    }

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

    .hero-actions {
        flex-direction: column;
        gap: 1rem;
        width: 100%;
        max-width: 320px;
        margin: 0 auto;
    }

    .hero-actions .btn {
        width: 100%;
        justify-content: center;
    }

    .hero {
        padding-top: 140px;
        min-height: auto;
    }

    /* Force visibility of headers on mobile to fix "not visible" issue */
    .fade-in-up,
    .hero h1,
    .hero p,
    .hero-actions,
    .section-header h2,
    .section-header p,
    .about-text h2,
    .about-text p,
    .section-tag,
    .course-card,
    .result-box,
    .stat-item {
        opacity: 1 !important;
        transform: translateY(0) !important;
        transition: opacity 0.3s ease, transform 0.3s ease !important;
        visibility: visible !important;
    }

    .nav-cta-mobile {
        display: block !important;
        width: 100%;
        margin-top: 1rem;
    }

    .nav-cta-mobile .btn {
        width: 100%;
        justify-content: center;
    }
}

@media (max-width: 992px) {

    .grid-2,
    .contact-wrapper {
        grid-template-columns: 1fr;
    }

    .course-grid,
    .results-showcase {
        grid-template-columns: 1fr;
    }

    .about-image {
        order: -1;
    }
}

/* Watermark */
.watermark {
    font-size: 0.8rem;
    color: var(--text-muted);
    opacity: 0.6;
    margin-top: 2rem;
    letter-spacing: 0.05em;
    font-weight: 500;
}

.watermark span {
    color: var(--primary-black);
    font-weight: 700;
}