/* ============================================================
   Зорянський академічний ліцей — Material Design 3 (dark)
   ============================================================ */

:root {
    /* --- MD3 tonal surfaces (dark scheme) --- */
    --md-surface:            #0e1116;
    --md-surface-1:          #161a21;
    --md-surface-2:          #1b212a;
    --md-surface-3:          #212934;
    --md-surface-4:          #25303d;
    --md-surface-variant:    #2a313b;
    --md-on-surface:         #e3e6eb;
    --md-on-surface-variant: #c1c7d0;
    --md-outline:            #3a424d;
    --md-outline-variant:    #262c34;

    /* --- Brand / primary --- */
    --md-primary:            #8ab4ff;
    --md-on-primary:         #06294f;
    --md-primary-container:  #234674;
    --md-on-primary-container:#d6e3ff;

    /* --- Profile accents --- */
    --acc-math: #4fd4ff;
    --acc-phil: #ff6ba6;
    --acc-hist: #ffb454;
    --acc-stem: #57f2a3;

    /* --- Elevation shadows (MD3) --- */
    --el-1: 0 1px 2px rgba(0,0,0,.45), 0 1px 3px 1px rgba(0,0,0,.30);
    --el-2: 0 1px 2px rgba(0,0,0,.45), 0 2px 6px 2px rgba(0,0,0,.30);
    --el-3: 0 4px 8px 3px rgba(0,0,0,.30), 0 1px 3px rgba(0,0,0,.45);

    /* --- Shape (corner radius) --- */
    --r-sm: 12px;
    --r-md: 16px;
    --r-lg: 24px;
    --r-xl: 28px;
    --r-full: 999px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
    font-family: 'Roboto Flex', 'Roboto', system-ui, sans-serif;
    background-color: var(--md-surface);
    color: var(--md-on-surface);
    margin: 0;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3 { font-family: 'Unbounded', sans-serif; letter-spacing: -0.5px; }

a { color: var(--md-primary); }

/* ============================================================
   Top app bar
   ============================================================ */
.appbar {
    position: fixed;
    top: 0; left: 0; width: 100%;
    height: 64px;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: rgba(22, 26, 33, 0.85);
    backdrop-filter: blur(18px) saturate(140%);
    border-bottom: 1px solid var(--md-outline-variant);
    z-index: 1000;
}

.appbar .logo {
    font-family: 'Unbounded', sans-serif;
    font-weight: 800;
    font-size: 1.05rem;
    color: var(--md-on-surface);
    text-decoration: none;
    letter-spacing: -0.5px;
}
.appbar .logo span { color: var(--md-primary); }

.nav-links { display: flex; align-items: center; gap: 4px; }
.nav-links a {
    position: relative;
    color: var(--md-on-surface-variant);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    padding: 8px 14px;
    border-radius: var(--r-full);
    transition: background .2s, color .2s;
}
.nav-links a:hover { background: rgba(138,180,255,.10); color: var(--md-on-surface); }

.nav-btn {
    background: var(--md-primary) !important;
    color: var(--md-on-primary) !important;
    font-weight: 600 !important;
    box-shadow: var(--el-1);
}
.nav-btn:hover { background: #a3c5ff !important; }

/* mobile menu toggle */
.menu-toggle { display: none; background: none; border: none; color: var(--md-on-surface); cursor: pointer; padding: 8px; border-radius: var(--r-full); }
.menu-toggle:hover { background: rgba(255,255,255,.06); }
.menu-toggle svg { display: block; }

/* ============================================================
   Hero
   ============================================================ */
.hero {
    min-height: 92vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 96px 24px 48px;
    position: relative;
    overflow: hidden;
    background:
        radial-gradient(circle at 50% 35%, rgba(35,70,116,.45), transparent 60%),
        radial-gradient(circle at 80% 80%, rgba(79,212,255,.10), transparent 55%),
        var(--md-surface);
}
.hero::after {
    content: "";
    position: absolute; inset: 0;
    background-image:
        linear-gradient(rgba(138,180,255,.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(138,180,255,.04) 1px, transparent 1px);
    background-size: 48px 48px;
    mask-image: radial-gradient(circle at 50% 40%, #000 30%, transparent 75%);
    pointer-events: none;
}
.hero-content { position: relative; z-index: 1; }
.hero .eyebrow {
    display: inline-block;
    font-family: 'Roboto', sans-serif;
    font-size: .8rem;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--md-primary);
    background: var(--md-primary-container);
    padding: 6px 16px;
    border-radius: var(--r-full);
    margin-bottom: 28px;
}
.hero h1 {
    font-size: clamp(2.6rem, 8vw, 5.2rem);
    line-height: 0.98;
    margin: 0;
    background: linear-gradient(180deg, #fff, #9fb4d4);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}
.hero p {
    color: var(--md-on-surface-variant);
    font-size: 1.15rem;
    max-width: 540px;
    margin: 24px auto 36px;
}

/* MD filled / tonal buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-family: 'Roboto', sans-serif;
    font-weight: 600;
    font-size: .95rem;
    padding: 14px 28px;
    border: none;
    border-radius: var(--r-full);
    cursor: pointer;
    text-decoration: none;
    transition: box-shadow .2s, transform .1s, background .2s;
}
.btn-filled { background: var(--md-primary); color: var(--md-on-primary); box-shadow: var(--el-1); }
.btn-filled:hover { box-shadow: var(--el-2); background: #a3c5ff; }
.btn-filled:active { transform: scale(.98); }
.btn-tonal { background: var(--md-surface-3); color: var(--md-on-surface); }
.btn-tonal:hover { background: var(--md-surface-4); }
.hero-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

/* ============================================================
   Section scaffold
   ============================================================ */
section.block { max-width: 1240px; margin: 0 auto; padding: 72px 24px; }
.section-head { margin-bottom: 40px; }
.section-head .kicker {
    font-family: 'Roboto', sans-serif;
    font-size: .78rem;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--md-primary);
    font-weight: 600;
}
.section-title {
    font-size: clamp(1.8rem, 4vw, 2.6rem);
    margin: 8px 0 0;
}

/* ============================================================
   Profile cards
   ============================================================ */
.profiles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 20px;
}
.profile-card {
    position: relative;
    height: 440px;
    border-radius: var(--r-xl);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 28px;
    text-decoration: none;
    color: var(--md-on-surface);
    background: var(--md-surface-2);
    box-shadow: var(--el-1);
    transition: box-shadow .25s, transform .25s;
    isolation: isolate;
}
.profile-card:hover { box-shadow: var(--el-3); transform: translateY(-4px); }
.profile-card .bg {
    position: absolute; inset: 0; z-index: -2;
    width: 100%; height: 100%;
    object-fit: cover;
    transition: transform .5s, filter .5s;
}
.profile-card:hover .bg { transform: scale(1.06); }
.profile-card::before {
    content: "";
    position: absolute; inset: 0; z-index: -1;
    background: linear-gradient(180deg, rgba(14,17,22,.1) 0%, rgba(14,17,22,.55) 55%, rgba(14,17,22,.92) 100%);
}
.profile-card .chip {
    align-self: flex-start;
    font-family: 'Roboto', sans-serif;
    font-size: .72rem;
    font-weight: 600;
    letter-spacing: 1px;
    text-transform: uppercase;
    padding: 6px 12px;
    border-radius: var(--r-full);
    margin-bottom: 14px;
    color: var(--md-surface);
}
.profile-card h3 { margin: 0 0 8px; font-size: 1.25rem; line-height: 1.15; }
.profile-card p { margin: 0; color: var(--md-on-surface-variant); font-size: .92rem; }
.profile-card .go {
    margin-top: 16px; font-family: 'Roboto'; font-weight: 600; font-size: .85rem;
    display: inline-flex; align-items: center; gap: 6px;
}

.math .chip { background: var(--acc-math); }
.phil .chip { background: var(--acc-phil); }
.hist .chip { background: var(--acc-hist); }
.math { border-bottom: 4px solid var(--acc-math); }
.phil { border-bottom: 4px solid var(--acc-phil); }
.hist { border-bottom: 4px solid var(--acc-hist); }
.math .go { color: var(--acc-math); }
.phil .go { color: var(--acc-phil); }
.hist .go { color: var(--acc-hist); }

/* ============================================================
   Lab cards (filled tonal MD cards)
   ============================================================ */
.labs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}
.lab-card {
    background: var(--md-surface-1);
    border: 1px solid var(--md-outline-variant);
    border-radius: var(--r-lg);
    overflow: hidden;
    box-shadow: var(--el-1);
    transition: box-shadow .25s, transform .25s;
}
.lab-card:hover { box-shadow: var(--el-2); transform: translateY(-3px); }
.lab-media {
    height: 200px;
    background-size: cover;
    background-position: center;
    background-color: var(--md-surface-3);
    display: flex; align-items: center; justify-content: center;
    font-size: 3rem;
}
.lab-media.placeholder {
    background-image: linear-gradient(135deg, rgba(87,242,163,.18), rgba(79,212,255,.12));
}
.lab-body { padding: 24px; }
.lab-body h3 { margin: 0 0 8px; font-size: 1.15rem; }
.lab-body h3.eng { color: var(--acc-stem); }
.lab-body h3.bio { color: var(--acc-math); }
.lab-body p { margin: 0; color: var(--md-on-surface-variant); font-size: .92rem; }
.lab-tag {
    display:inline-block; margin-top:14px; font-size:.7rem; letter-spacing:1px; text-transform:uppercase;
    color: var(--md-on-surface-variant); border:1px solid var(--md-outline); padding:4px 10px; border-radius: var(--r-full);
}

/* ============================================================
   Schedule (MD data table)
   ============================================================ */
.table-card {
    background: var(--md-surface-1);
    border: 1px solid var(--md-outline-variant);
    border-radius: var(--r-lg);
    overflow: hidden;
    box-shadow: var(--el-1);
}
table.schedule { width: 100%; border-collapse: collapse; }
table.schedule th, table.schedule td { padding: 16px 24px; text-align: left; }
table.schedule thead th {
    font-family: 'Roboto'; font-size: .75rem; letter-spacing: 1px; text-transform: uppercase;
    color: var(--md-primary); background: var(--md-surface-2);
}
table.schedule tbody tr { border-top: 1px solid var(--md-outline-variant); transition: background .2s; }
table.schedule tbody tr:hover { background: rgba(138,180,255,.05); }
table.schedule td:first-child { color: var(--md-on-surface-variant); font-variant-numeric: tabular-nums; }

/* ============================================================
   Gallery
   ============================================================ */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 16px;
}
.gallery-item {
    height: 280px;
    border-radius: var(--r-lg);
    background-size: cover;
    background-position: center;
    background-color: var(--md-surface-3);
    box-shadow: var(--el-1);
    transition: transform .3s, box-shadow .3s;
}
.gallery-item.placeholder {
    background-image: linear-gradient(135deg, rgba(35,70,116,.5), rgba(27,33,42,.9));
    display:flex; align-items:center; justify-content:center; color: var(--md-on-surface-variant); font-size:2.2rem;
}
.gallery-item:hover { transform: scale(1.02); box-shadow: var(--el-3); }

/* ============================================================
   Transparency (law) cards
   ============================================================ */
.law-section { background: var(--md-surface-1); border-top: 1px solid var(--md-outline-variant); border-bottom: 1px solid var(--md-outline-variant); }
.law-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 14px;
}
.law-card {
    display: flex; align-items: center; gap: 14px;
    background: var(--md-surface-2);
    border: 1px solid var(--md-outline-variant);
    padding: 20px 22px;
    border-radius: var(--r-md);
    text-decoration: none;
    color: var(--md-on-surface);
    font-weight: 500; font-size: .95rem;
    transition: background .2s, transform .2s, box-shadow .2s;
}
.law-card .ic { font-size: 1.4rem; }
.law-card:hover { background: var(--md-primary-container); transform: translateY(-2px); box-shadow: var(--el-1); }

/* ============================================================
   Admission form (MD text fields)
   ============================================================ */
.admission { background: var(--md-surface-1); border-top: 1px solid var(--md-outline-variant); }
.form-card {
    max-width: 560px; margin: 36px auto 0;
    background: var(--md-surface-2);
    border: 1px solid var(--md-outline-variant);
    border-radius: var(--r-xl);
    padding: 36px;
    box-shadow: var(--el-2);
}
.field { position: relative; margin-bottom: 22px; }
.field input, .field select {
    width: 100%;
    background: var(--md-surface-3);
    border: 1px solid var(--md-outline);
    border-radius: var(--r-sm);
    color: var(--md-on-surface);
    font-size: 1rem;
    font-family: 'Roboto', sans-serif;
    padding: 16px;
    transition: border-color .2s, box-shadow .2s;
}
.field input::placeholder { color: var(--md-on-surface-variant); }
.field input:focus, .field select:focus {
    outline: none;
    border-color: var(--md-primary);
    box-shadow: 0 0 0 2px rgba(138,180,255,.25);
}
.field select { appearance: none; cursor: pointer; }
.form-card .btn { width: 100%; justify-content: center; padding: 16px; }

/* ============================================================
   Statut / PDF
   ============================================================ */
.statut-hero {
    padding: 120px 24px 32px;
    text-align: center;
    background: radial-gradient(circle at 50% 0%, rgba(35,70,116,.45), transparent 60%), var(--md-surface);
}
.statut-hero h1 { font-size: clamp(2rem, 5vw, 3.2rem); margin: 0 0 10px; }
.statut-hero p { color: var(--md-primary); font-weight: 600; letter-spacing: 1px; }
.pdf-card {
    max-width: 1000px; margin: 24px auto 80px; padding: 16px;
    background: var(--md-surface-1);
    border: 1px solid var(--md-outline-variant);
    border-radius: var(--r-lg);
    box-shadow: var(--el-2);
}
.pdf-viewer { width: 100%; height: 88vh; border: none; border-radius: var(--r-md); background: var(--md-surface-3); }
.pdf-actions { text-align: center; padding: 16px; }

/* ============================================================
   Footer
   ============================================================ */
footer {
    background: var(--md-surface-1);
    border-top: 1px solid var(--md-outline-variant);
    padding: 56px 24px;
    text-align: center;
    color: var(--md-on-surface-variant);
    font-size: .9rem;
}
footer strong { color: var(--md-on-surface); font-family: 'Unbounded'; }
footer .contact { margin: 12px 0; }

/* ============================================================
   Entrance animations
   ============================================================ */
@keyframes rise { from { opacity: 0; transform: translateY(18px); } to { opacity: 1; transform: none; } }
.reveal { opacity: 0; animation: rise .6s cubic-bezier(.2,.7,.3,1) forwards; }
.reveal.d1 { animation-delay: .08s; }
.reveal.d2 { animation-delay: .16s; }
.reveal.d3 { animation-delay: .24s; }
@media (prefers-reduced-motion: reduce) { .reveal { animation: none; opacity: 1; } }

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 820px) {
    .menu-toggle { display: inline-flex; }
    .nav-links {
        position: fixed; top: 64px; right: 0;
        flex-direction: column; align-items: stretch;
        width: 240px;
        background: var(--md-surface-2);
        border-left: 1px solid var(--md-outline-variant);
        border-bottom: 1px solid var(--md-outline-variant);
        border-radius: 0 0 0 var(--r-lg);
        padding: 12px;
        gap: 2px;
        box-shadow: var(--el-3);
        transform: translateX(110%);
        transition: transform .25s ease;
    }
    .nav-links.open { transform: none; }
    .nav-links a { padding: 12px 16px; border-radius: var(--r-sm); }
}