/* ==========================================================
   ALEX AGENCY — преміум-дизайн, 4 теми
   Теми перемикаються атрибутом data-theme на <html>
   ========================================================== */

@import url('https://fonts.googleapis.com/css2?family=Manrope:wght@400;500;600;700;800;900&display=swap');

:root[data-theme="graphite"] {
    --bg: #14151a;
    --surface: #1c1d24;
    --surface-2: #24252d;
    --ink: #f5f4f0;
    --ink-soft: rgba(245, 244, 240, 0.65);
    --ink-muted: rgba(245, 244, 240, 0.4);
    --border: rgba(245, 244, 240, 0.10);
    --border-md: rgba(245, 244, 240, 0.16);
    --accent: #e8a23c;
    --accent-dim: rgba(232, 162, 60, 0.14);
    --accent-ink: #14151a;
    --success: #4fbf8b;
    --danger: #e0645f;
    --shadow: 0 4px 24px rgba(0, 0, 0, 0.28);
}

:root[data-theme="daylight"] {
    --bg: #fcfcf4;
    --surface: #ffffff;
    --surface-2: #f3f2e9;
    --ink: #1c1a17;
    --ink-soft: #5a5650;
    --ink-muted: rgba(28, 26, 23, 0.42);
    --border: rgba(28, 26, 23, 0.08);
    --border-md: rgba(28, 26, 23, 0.14);
    --accent: #e84b1c;
    --accent-dim: rgba(232, 75, 28, 0.10);
    --accent-ink: #ffffff;
    --success: #16a34a;
    --danger: #c43a2f;
    --shadow: 0 4px 20px rgba(28, 26, 23, 0.07);
}

:root[data-theme="ocean"] {
    --bg: #f2f5f9;
    --surface: #ffffff;
    --surface-2: #e6ecf3;
    --ink: #14202e;
    --ink-soft: #526075;
    --ink-muted: rgba(20, 32, 46, 0.42);
    --border: rgba(20, 32, 46, 0.08);
    --border-md: rgba(20, 32, 46, 0.14);
    --accent: #2456c4;
    --accent-dim: rgba(36, 86, 196, 0.10);
    --accent-ink: #ffffff;
    --success: #1d8a5f;
    --danger: #c4392f;
    --shadow: 0 4px 20px rgba(20, 32, 46, 0.07);
}

:root[data-theme="forest"] {
    --bg: #f4f6ee;
    --surface: #ffffff;
    --surface-2: #e8ecdf;
    --ink: #1b2617;
    --ink-soft: #526048;
    --ink-muted: rgba(27, 38, 23, 0.42);
    --border: rgba(27, 38, 23, 0.08);
    --border-md: rgba(27, 38, 23, 0.14);
    --accent: #4c7a3d;
    --accent-dim: rgba(76, 122, 61, 0.10);
    --accent-ink: #ffffff;
    --success: #4c7a3d;
    --danger: #b8493f;
    --shadow: 0 4px 20px rgba(27, 38, 23, 0.07);
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    padding: 0;
    background: var(--bg);
    color: var(--ink);
    font-family: 'Manrope', -apple-system, sans-serif;
    font-size: 15px;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3 {
    font-weight: 400;
    letter-spacing: -0.02em;
    margin: 0 0 0.5em;
    line-height: 1.15;
}
h1 { font-size: 34px; }
h1 strong, h2 strong { font-weight: 800; }
h2 { font-size: 24px; }
h3 { font-size: 16px; font-weight: 700; letter-spacing: -0.01em; }

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

p { margin: 0 0 1em; color: var(--ink); max-width: 68ch; }

.muted { color: var(--ink-soft); }

.eyebrow {
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.10em;
    text-transform: uppercase;
    color: var(--ink-muted);
}

.app {
    display: grid;
    grid-template-columns: 260px 1fr;
    min-height: 100vh;
}

.sidebar {
    background: var(--surface);
    border-right: 1px solid var(--border);
    padding: 28px 20px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.brand {
    font-size: 16px;
    font-weight: 800;
    letter-spacing: -0.01em;
    margin-bottom: 28px;
}
.brand span { color: var(--accent); }

.nav-link {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    border-radius: 8px;
    color: var(--ink);
    font-size: 14px;
    font-weight: 600;
}
.nav-link:hover { background: var(--surface-2); text-decoration: none; }
.nav-link.active { background: var(--accent); color: var(--accent-ink); }

.sidebar-footer {
    margin-top: auto;
    padding-top: 20px;
    border-top: 1px solid var(--border);
    font-size: 13px;
}

.main {
    padding: 32px 40px;
    max-width: 1100px;
}

.card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 24px;
    box-shadow: var(--shadow);
    transition: border-color 0.2s, box-shadow 0.2s, transform 0.2s;
}

.card-dark {
    background: var(--ink);
    color: var(--bg);
    border: none;
    position: relative;
    overflow: hidden;
}
.card-dark::before {
    content: '';
    position: absolute;
    top: -60px; right: -60px;
    width: 220px; height: 220px;
    border-radius: 50%;
    background: radial-gradient(circle, color-mix(in srgb, var(--accent) 28%, transparent) 0%, transparent 70%);
    pointer-events: none;
}
.card-dark p, .card-dark h2, .card-dark h3 { color: var(--bg); }

.grid-2 {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 16px;
}

.progress-track {
    height: 8px;
    background: var(--surface-2);
    border-radius: 99px;
    overflow: hidden;
    margin: 12px 0;
}
.progress-fill {
    height: 100%;
    background: var(--accent);
    border-radius: 99px;
}

.lesson-row {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px;
    border: 1px solid var(--border);
    border-radius: 14px;
    margin-bottom: 10px;
    background: var(--surface);
    transition: border-color 0.2s, box-shadow 0.2s, transform 0.15s;
}
.lesson-row:hover {
    border-color: color-mix(in srgb, var(--accent) 30%, var(--border));
    box-shadow: var(--shadow);
    transform: translateY(-1px);
}
.lesson-num {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    background: var(--surface-2);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    flex-shrink: 0;
}
.lesson-num.completed { background: var(--success); color: var(--accent-ink); }
.lesson-num.locked { opacity: 0.4; }
.lesson-info { flex: 1; min-width: 0; }
.lesson-info h3 { margin: 0 0 2px; }

.badge {
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    padding: 5px 12px;
    border-radius: 99px;
    white-space: nowrap;
    border: 1px solid transparent;
}
.badge-completed { background: color-mix(in srgb, var(--success) 14%, transparent); color: var(--success); border-color: color-mix(in srgb, var(--success) 24%, transparent); }
.badge-available { background: var(--accent-dim); color: var(--accent); border-color: color-mix(in srgb, var(--accent) 22%, transparent); }
.badge-locked { background: var(--surface-2); color: var(--ink-muted); border-color: var(--border); }
.badge-pending { background: var(--accent-dim); color: var(--accent); border-color: color-mix(in srgb, var(--accent) 22%, transparent); }
.badge-accepted { background: color-mix(in srgb, var(--success) 14%, transparent); color: var(--success); border-color: color-mix(in srgb, var(--success) 24%, transparent); }
.badge-revision { background: color-mix(in srgb, var(--danger) 14%, transparent); color: var(--danger); border-color: color-mix(in srgb, var(--danger) 24%, transparent); }

input, textarea, select {
    width: 100%;
    padding: 11px 14px;
    border: 1px solid var(--border-md);
    border-radius: 10px;
    background: var(--surface);
    color: var(--ink);
    font-family: inherit;
    font-size: 14px;
    margin-bottom: 14px;
}
input:focus, textarea:focus, select:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-dim);
}
label {
    display: block;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--ink-muted);
    margin-bottom: 6px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 11px 22px;
    border-radius: 10px;
    border: 1px solid var(--border-md);
    background: var(--surface);
    color: var(--ink);
    font-weight: 700;
    font-size: 12px;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    cursor: pointer;
    font-family: inherit;
    transition: border-color 0.15s, background 0.15s;
}
.btn:hover { border-color: var(--ink-muted); text-decoration: none; }
.btn-primary { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
.btn-primary:hover { opacity: 0.88; border-color: var(--accent); }
.btn-full { width: 100%; }

table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 14px 12px; border-bottom: 1px solid var(--border); }
th { color: var(--ink-muted); font-weight: 700; font-size: 11px; letter-spacing: 0.06em; text-transform: uppercase; }
.online-dot {
    display: inline-block;
    width: 8px; height: 8px;
    border-radius: 50%;
    background: var(--success);
    margin-right: 6px;
}
.offline-dot { background: var(--ink-muted); opacity: 0.5; }

.theme-switcher { display: flex; gap: 8px; }
.theme-dot {
    width: 24px; height: 24px;
    border-radius: 50%;
    border: 2px solid transparent;
    cursor: pointer;
}
.theme-dot.active { border-color: var(--accent); }
.theme-dot[data-theme-btn="graphite"] { background: #14151a; }
.theme-dot[data-theme-btn="daylight"] { background: #fcfcf4; border: 2px solid rgba(0,0,0,0.15); }
.theme-dot[data-theme-btn="ocean"] { background: #2456c4; }
.theme-dot[data-theme-btn="forest"] { background: #4c7a3d; }

.notif-bell summary::-webkit-details-marker { display: none; }
.notif-bell[open] summary { border-color: var(--accent) !important; }

.auth-wrap {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}
.auth-card { width: 100%; max-width: 380px; }

.menu-toggle { display: none; }

@media (max-width: 800px) {
    .app { grid-template-columns: 1fr; }
    .sidebar {
        position: fixed;
        top: 0; left: 0; bottom: 0;
        width: 240px;
        z-index: 50;
        transform: translateX(-100%);
        transition: transform 0.2s ease;
    }
    .sidebar.open { transform: translateX(0); }
    .main { padding: 20px; padding-top: 70px; }
    .menu-toggle {
        display: flex;
        position: fixed;
        top: 16px; left: 16px;
        z-index: 60;
        width: 40px; height: 40px;
        border-radius: 10px;
        background: var(--surface);
        border: 1px solid var(--border);
        align-items: center;
        justify-content: center;
        box-shadow: var(--shadow);
    }
    .grid-2 { grid-template-columns: 1fr; }
    .overlay {
        display: none;
        position: fixed; inset: 0;
        background: rgba(0,0,0,0.4);
        z-index: 40;
    }
    .overlay.open { display: block; }
}
