:root {
    --white: #ffffff;
    --light-grey: #f5f7fb;
    --mid-grey: #dde3ea;
    --dark-grey: #1f2937;
    --text: #243b55;
    --primary-blue: #2f5fa6;
    --secondary-blue: #4f7bbe;
    --gold: #c59d35;
    --gold-light: #f2e4b8;
    --shadow: 0 12px 30px rgba(34, 60, 80, 0.1);
    --shadow-soft: 0 6px 20px rgba(34, 60, 80, 0.08);
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    color: var(--text);
    background-color: var(--light-grey);
}

a {
    color: inherit;
    text-decoration: none;
}

img {
    display: block;
    max-width: 100%;
    height: auto;
}

button {
    font: inherit;
}

.container {
    width: min(1160px, calc(100% - 3rem));
    margin: 0 auto;
}

.navbar {
    position: sticky;
    top: 0;
    z-index: 50;
    background-color: rgba(255, 255, 255, 0.96);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid rgba(35, 57, 89, 0.08);
}

.nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 1rem 0;
}

.nav-logo {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    color: var(--primary-blue);
}

.nav-menu {
    display: flex;
    gap: 1.5rem;
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-menu a {
    color: var(--dark-grey);
    font-weight: 500;
    transition: color 0.25s ease;
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--gold);
}

.contact-bar {
    background-color: var(--white);
    border-bottom: 1px solid rgba(35, 57, 89, 0.08);
}

.contact-inner {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 0;
    color: var(--dark-grey);
    font-size: 0.92rem;
}

.contact-inner a {
    color: var(--secondary-blue);
}

.section {
    padding: 4rem 0;
}

.section--spaReduced {
    padding: 2rem 0;
}

.hero {
    padding-top: 3rem;
}

.hero-grid {
    display: grid;
    grid-template-columns: minmax(300px, 420px) 1fr;
    gap: 2.5rem;
    align-items: center;
}

.hero-card {
    background: var(--white);
    border-radius: 28px;
    box-shadow: var(--shadow);
    overflow: hidden;
}

.hero-image {
    width: 100%;
    height: 100%;
    min-height: 420px;
    object-fit: cover;
}

.hero-copy {
    padding: 2.5rem;
}

.hero-copy h1 {
    font-size: clamp(2.5rem, 3.6vw, 4rem);
    line-height: 1.02;
    margin-bottom: 1rem;
}

.hero-copy p {
    max-width: 760px;
    line-height: 1.8;
    font-size: 1.05rem;
    margin-bottom: 1.5rem;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

.button-primary,
.button-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 999px;
    padding: 0.95rem 1.75rem;
    font-weight: 600;
    transition: transform 0.2s ease, background-color 0.2s ease, color 0.2s ease;
}

.button-primary {
    background-color: var(--primary-blue);
    color: var(--white);
}

.button-primary:hover {
    transform: translateY(-2px);
    background-color: #254880;
}

.button-secondary {
    border: 1px solid var(--primary-blue);
    color: var(--primary-blue);
    background-color: transparent;
}

.button-secondary:hover {
    transform: translateY(-2px);
    background-color: rgba(47, 95, 166, 0.1);
}

.section-title {
    font-size: clamp(2rem, 2.4vw, 2.5rem);
    margin-bottom: 0.75rem;
    color: var(--primary-blue);
}

.section-description {
    max-width: 760px;
    font-size: 1rem;
    color: #4b5d74;
    margin-bottom: 2rem;
}

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.75rem;
}

.feature-card,
.project-card,
.course-card {
    background: var(--white);
    border-radius: 24px;
    box-shadow: var(--shadow-soft);
    transition: transform 0.25s ease, box-shadow 0.25s ease;
    overflow: hidden;
}

.feature-card:hover,
.project-card:hover,
.course-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow);
}

.feature-card {
    padding: 1.75rem;
}

.feature-card h3,
.project-card h3,
.course-card h3 {
    margin-top: 0;
    margin-bottom: 0.75rem;
    color: var(--primary-blue);
}

.feature-card p,
.project-card p,
.course-card p {
    color: #4b5d74;
    line-height: 1.75;
    margin: 0;
}

.project-card {
    display: grid;
    grid-template-rows: auto 1fr;
}

.project-card .project-image {
    min-height: 220px;
}

.project-card .project-content {
    padding: 1.5rem;
}

.project-card h3 {
    margin-bottom: 0.65rem;
}

.project-tags {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.tag {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background-color: var(--gold-light);
    color: var(--primary-blue);
    border-radius: 999px;
    padding: 0.45rem 0.85rem;
    font-size: 0.83rem;
    font-weight: 600;
}

.project-links {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-top: 1rem;
}

.project-links a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--gold);
    color: var(--white);
    border-radius: 999px;
    padding: 0.65rem 1rem;
    font-size: 0.9rem;
    font-weight: 700;
    transition: background-color 0.2s ease;
}

.project-links a:hover {
    background-color: #a17a2c;
}

.note-box {
    background: linear-gradient(135deg, rgba(242, 228, 184, 0.8), var(--white));
    border-left: 4px solid var(--gold);
    padding: 1.5rem;
    border-radius: 18px;
    margin-top: 2rem;
}

.note-box p {
    margin: 0;
    color: var(--dark-grey);
}

.course-card {
    padding: 1.75rem;
    border-left: 6px solid var(--primary-blue);
}

.course-card .course-meta {
    margin: 1rem 0;
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.course-card .course-meta span {
    background: var(--gold-light);
    color: var(--primary-blue);
    border-radius: 999px;
    padding: 0.45rem 0.85rem;
    font-weight: 600;
    font-size: 0.85rem;
}

.course-card ul {
    padding-left: 1.2rem;
    margin: 1rem 0 0;
    color: #4b5d74;
}

.course-card li {
    margin-bottom: 0.45rem;
}

.footer {
    background-color: var(--dark-grey);
    color: var(--white);
    padding: 2rem 0;
    text-align: center;
}

.footer p {
    margin: 0;
    color: rgba(255, 255, 255, 0.78);
}

.fade-div {
    opacity: 0;
    transform: translateY(18px);
    animation: fadeInUp 0.8s ease forwards;
}

.fade-div:nth-child(1) {
    animation-delay: 0.05s;
}

.fade-div:nth-child(2) {
    animation-delay: 0.1s;
}

.fade-div:nth-child(3) {
    animation-delay: 0.15s;
}

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

@media (max-width: 980px) {
    .hero-grid {
        grid-template-columns: 1fr;
    }

    .nav-menu {
        gap: 1rem;
        flex-wrap: wrap;
        justify-content: center;
    }
}

@media (max-width: 720px) {
    .container {
        width: min(100%, calc(100% - 1.5rem));
    }

    .hero-copy,
    .hero-card,
    .project-card,
    .course-card,
    .feature-card {
        border-radius: 20px;
    }

    .hero-copy h1 {
        font-size: 2.4rem;
    }

    .hero-actions {
        flex-direction: column;
        align-items: stretch;
    }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation: none !important;
        transition: none !important;
    }
}