@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');

:root {
    --background: #080d18;
    --surface: #101827;
    --primary: #3987ff;
    --text: #f4f7ff;
    --muted: #9ba9c0;
    --border: rgba(255, 255, 255, 0.10);
}

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

body {
    background: var(--background);
    color: var(--text);
    font-family: 'Inter', Arial, sans-serif;
    line-height: 1.7;
}

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

.navbar {
    min-height: 78px;
    padding: 20px 8%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 25px;
    border-bottom: 1px solid var(--border);
}

.logo {
    font-size: 26px;
    font-weight: 800;
    letter-spacing: -1px;
}

.logo span,
h1 span,
section h2 span {
    color: var(--primary);
}

nav {
    display: flex;
    gap: 28px;
}

nav a,
.nav-button {
    font-size: 13px;
    font-weight: 600;
}

nav a {
    color: var(--muted);
    transition: color 0.2s;
}

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

.nav-button {
    border: 1px solid var(--border);
    padding: 10px 16px;
    border-radius: 8px;
}

.hero {
    min-height: 650px;
    padding: 90px 8%;
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    align-items: center;
    gap: 60px;
    background:
        radial-gradient(ellipse at 80% 40%, rgba(57, 135, 255, 0.13), transparent 50%);
}

.badge,
.section-label {
    color: var(--primary);
    font-size: 12px;
    font-weight: 800;
    letter-spacing: 2px;
}

.badge {
    display: inline-block;
    border: 1px solid rgba(57, 135, 255, 0.35);
    background: rgba(57, 135, 255, 0.08);
    padding: 8px 13px;
    border-radius: 5px;
    margin-bottom: 25px;
}

.hero h1 {
    font-size: clamp(42px, 5vw, 68px);
    line-height: 1.12;
    letter-spacing: -3px;
}

.hero-description {
    color: var(--muted);
    max-width: 510px;
    margin-top: 24px;
    font-size: 15px;
}

.hero-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    margin-top: 30px;
}

.button-primary,
.button-secondary {
    display: inline-block;
    padding: 13px 19px;
    border-radius: 7px;
    font-size: 13px;
    font-weight: 700;
    transition: transform 0.2s, background 0.2s;
}

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

.button-secondary {
    border: 1px solid var(--border);
}

.button-primary:hover,
.button-secondary:hover {
    transform: translateY(-3px);
}

.hero-stats {
    display: flex;
    flex-wrap: wrap;
    gap: 38px;
    margin-top: 50px;
    padding-top: 25px;
    border-top: 1px solid var(--border);
}

.hero-stats h3 {
    font-size: 23px;
}

.hero-stats p {
    color: var(--muted);
    font-size: 11px;
}

.hero-visual {
    position: relative;
    padding: 20px;
}

.tech-card {
    position: relative;
    padding: 28px;
    min-height: 330px;
    border: 1px solid rgba(91, 157, 255, 0.35);
    border-radius: 18px;
    background: linear-gradient(145deg, #152642, #0b1220 75%);
    box-shadow: 0 25px 80px rgba(0, 0, 0, 0.3);
    overflow: hidden;
}

.tech-card::after {
    content: "";
    position: absolute;
    width: 220px;
    height: 220px;
    right: -100px;
    bottom: -110px;
    border: 1px solid rgba(57, 135, 255, 0.35);
    border-radius: 50%;
    box-shadow: 0 0 0 25px rgba(57, 135, 255, 0.04),
                0 0 0 50px rgba(57, 135, 255, 0.03);
}

.card-top,
.card-footer {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    font-size: 9px;
    letter-spacing: 1px;
    color: var(--muted);
}

.status-dot {
    width: 7px;
    height: 7px;
    background: #43e0a0;
    border-radius: 50%;
    margin-top: 5px;
}

.tech-icon {
    font-size: 90px;
    line-height: 1.5;
    color: var(--primary);
    margin-top: 15px;
}

.tech-card h2 {
    font-size: 25px;
    line-height: 1.3;
    letter-spacing: 1px;
}

.tech-card > p {
    font-size: 12px;
    color: var(--muted);
    margin-top: 12px;
}

.card-line {
    height: 1px;
    background: var(--border);
    margin: 25px 0 15px;
}

.floating-tag {
    position: absolute;
    bottom: 0;
    left: 0;
    padding: 12px 17px;
    background: #172640;
    border: 1px solid var(--border);
    border-radius: 9px;
    font-size: 11px;
    font-weight: 700;
}

.section {
    padding: 95px 8%;
    border-top: 1px solid var(--border);
}

.section h2 {
    font-size: clamp(28px, 4vw, 42px);
    line-height: 1.3;
    letter-spacing: -1.5px;
    margin-top: 18px;
}

.about {
    background: #0b1220;
}

.about > p {
    max-width: 700px;
    color: var(--muted);
    margin-top: 22px;
}

.section-description {
    color: var(--muted);
    margin-top: 12px;
}

.student-placeholder {
    margin-top: 35px;
    padding: 40px 20px;
    text-align: center;
    border: 1px dashed rgba(255, 255, 255, 0.2);
    border-radius: 12px;
    background: var(--surface);
}

.placeholder-icon {
    display: inline-grid;
    place-items: center;
    width: 55px;
    height: 55px;
    border-radius: 50%;
    background: rgba(57, 135, 255, 0.13);
    color: var(--primary);
    font-size: 30px;
    margin-bottom: 10px;
}

.student-placeholder p,
.gallery-placeholder p {
    color: var(--muted);
    font-size: 13px;
    margin-top: 8px;
}

.gallery-placeholder {
    min-height: 200px;
    margin-top: 35px;
    padding: 40px 20px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    border: 1px solid var(--border);
    border-radius: 12px;
    background:
        radial-gradient(ellipse at center, rgba(57, 135, 255, 0.12), transparent 70%),
        var(--surface);
}

.gallery-placeholder span {
    font-size: 12px;
    font-weight: 800;
    letter-spacing: 3px;
}

.contact {
    text-align: center;
    background: #0b1220;
}

.contact p {
    color: var(--muted);
    margin-top: 15px;
}

footer {
    padding: 25px 8%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 15px;
    border-top: 1px solid var(--border);
}

footer p,
footer > a:last-child {
    color: var(--muted);
    font-size: 11px;
}

@media (max-width: 850px) {
    .navbar {
        padding: 18px 5%;
        flex-wrap: wrap;
    }

    nav {
        order: 3;
        width: 100%;
        justify-content: center;
        gap: 20px;
        flex-wrap: wrap;
    }

    .nav-button {
        font-size: 11px;
    }

    .hero {
        grid-template-columns: 1fr;
        padding: 65px 6%;
        gap: 35px;
    }

    .hero h1 {
        letter-spacing: -2px;
    }

    .hero-visual {
        max-width: 500px;
        width: 100%;
        margin: auto;
    }

    .section {
        padding: 70px 6%;
    }

    footer {
        padding: 25px 6%;
    }
}

@media (max-width: 420px) {
    nav {
        gap: 14px;
    }

    nav a {
        font-size: 11px;
    }

    .hero-stats {
        gap: 22px;
    }

    .tech-card {
        padding: 20px;
    }

    .tech-card h2 {
        font-size: 21px;
    }
}