/* ============================================================
   VieGeo - BENTO UI (bento.css)
   Premium Dark Glassmorphism — Synced with loginout.css
   Base: #0a1628 | Accents: blue #1cb0f6, green #58cc02,
   purple #ce82ff, red #ff4b4b, gold #ffc800
============================================================ */

:root {
    --bg-dark: #0a1628;
    --bg-card: rgba(255,255,255,0.04);
    --bento-border: rgba(255,255,255,0.08);

    /* Accent Colors */
    --blue: #1cb0f6;
    --green: #58cc02;
    --purple: #ce82ff;
    --red: #ff4b4b;
    --gold: #ffc800;

    /* Gradients */
    --holo-1: linear-gradient(135deg, #ff6b6b, #556270);
    --holo-2: linear-gradient(135deg, #1cb0f6, #ce82ff);
    --holo-3: linear-gradient(135deg, #58cc02, #00b09b);

    /* Text */
    --text-main: #f0f4f8;
    --text-dim: rgba(255,255,255,0.45);
    --text-primary: #ffffff;

    /* Radius */
    --radius-lg: 28px;
    --radius-md: 20px;
    --radius-sm: 14px;

    --blur: blur(24px);

    --font-heading: 'Plus Jakarta Sans', sans-serif;
    --font-body: 'Plus Jakarta Sans', sans-serif;
}

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

body {
    background: var(--bg-dark);
    background-image:
        radial-gradient(ellipse 80% 60% at 15% 80%, rgba(28,176,246,0.10) 0%, transparent 60%),
        radial-gradient(ellipse 60% 50% at 85% 20%, rgba(206,130,255,0.08) 0%, transparent 60%),
        radial-gradient(ellipse 70% 40% at 50% 50%, rgba(88,204,2,0.05) 0%, transparent 60%);
    color: var(--text-main);
    font-family: var(--font-body);
    height: 100vh;
    display: flex;
    overflow: hidden;
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
}

/* ── LAYOUT ── */
.app-container {
    display: flex;
    width: 100%;
    height: 100%;
    padding: 20px;
    gap: 20px;
}

/* ── SIDEBAR ── */
.bento-sidebar {
    width: 240px;
    background: var(--bg-card);
    backdrop-filter: var(--blur);
    -webkit-backdrop-filter: var(--blur);
    border: 1px solid var(--bento-border);
    border-radius: var(--radius-lg);
    padding: 28px 18px;
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
    box-shadow: 0 20px 40px rgba(0,0,0,0.25), inset 0 1px 0 rgba(255,255,255,0.06);
}

.app-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.6rem;
    font-weight: 800;
    color: #fff;
    margin-bottom: 36px;
    padding: 0 12px;
    letter-spacing: 0.5px;
}

.app-logo i {
    font-size: 1.8rem;
    background: linear-gradient(135deg, #1cb0f6, #58cc02);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    filter: drop-shadow(0 0 6px rgba(28,176,246,0.3));
}

.nav-menu {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.nav-btn {
    background: transparent;
    border: none;
    color: var(--text-dim);
    font-size: 0.95rem;
    font-weight: 600;
    padding: 14px 16px;
    border-radius: var(--radius-sm);
    text-align: left;
    display: flex;
    align-items: center;
    gap: 14px;
    cursor: pointer;
    transition: all 0.25s cubic-bezier(0.4,0,0.2,1);
    font-family: var(--font-body);
}

.nav-btn i {
    font-size: 1.2rem;
    width: 22px;
    text-align: center;
}

.nav-btn:hover {
    background: rgba(255,255,255,0.05);
    color: var(--text-main);
}

.nav-btn.active {
    background: rgba(28,176,246,0.08);
    color: #fff;
    border: 1px solid rgba(28,176,246,0.15);
}

.nav-btn.active i {
    background: linear-gradient(135deg, #1cb0f6, #ce82ff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* ── MAIN CONTENT ── */
.bento-main {
    flex: 1;
    background: var(--bg-card);
    backdrop-filter: var(--blur);
    -webkit-backdrop-filter: var(--blur);
    border: 1px solid var(--bento-border);
    border-radius: var(--radius-lg);
    position: relative;
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(0,0,0,0.25), inset 0 1px 0 rgba(255,255,255,0.06);
}

/* ── TABS ── */
.tab-pane {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    padding: 40px;
    overflow-y: auto;
    opacity: 0;
    pointer-events: none;
    transform: translateY(16px);
    transition: all 0.35s cubic-bezier(0.4,0,0.2,1);
}

.tab-pane.active {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
}

.tab-pane::-webkit-scrollbar { width: 6px; }
.tab-pane::-webkit-scrollbar-track { background: transparent; }
.tab-pane::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.08); border-radius: 10px; }
.tab-pane::-webkit-scrollbar-thumb:hover { background: rgba(255,255,255,0.15); }

/* ── STATS HEADER (Top Right Pills) ── */
.stats-header {
    position: absolute;
    top: 20px; right: 36px;
    display: flex;
    gap: 12px;
    z-index: 100;
}

.stat-pill {
    background: rgba(0,0,0,0.35);
    border: 1px solid var(--bento-border);
    backdrop-filter: blur(12px);
    padding: 8px 16px;
    border-radius: 20px;
    font-weight: 700;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 8px;
}

/* ── BENTO CARDS ── */
.bento-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
}

.bento-card {
    background: rgba(255,255,255,0.03);
    border: 1px solid var(--bento-border);
    border-radius: var(--radius-md);
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 14px;
    transition: all 0.25s cubic-bezier(0.4,0,0.2,1);
}

.bento-card:hover {
    background: rgba(255,255,255,0.06);
    transform: translateY(-3px);
    box-shadow: 0 12px 30px rgba(0,0,0,0.15);
}

.bento-card-title {
    font-size: 1.15rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 10px;
}

.bento-card-desc {
    color: var(--text-dim);
    font-size: 0.92rem;
    line-height: 1.5;
}

/* ── BENTO BUTTONS ── */
.bento-btn {
    padding: 12px 20px;
    border-radius: var(--radius-sm);
    border: none;
    background: rgba(255,255,255,0.08);
    color: white;
    font-weight: 700;
    font-family: var(--font-body);
    cursor: pointer;
    transition: all 0.25s;
    display: inline-flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
}

.bento-btn:hover {
    background: rgba(255,255,255,0.15);
    transform: translateY(-2px);
}

/* ── ISLAND PATH (Learning Nodes) ── */
.island-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding-bottom: 100px;
    position: relative;
}

.island-line {
    position: absolute;
    top: 0; bottom: 0; left: 50%;
    width: 2px;
    background: linear-gradient(to bottom, rgba(255,255,255,0.15) 50%, transparent 50%);
    background-size: 2px 20px;
    z-index: 0;
}

.island-node {
    position: relative;
    z-index: 1;
    width: 140px;
    height: 140px;
    margin: 30px 0;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: transform 0.3s;
}

.island-node:nth-child(even) { transform: translateX(100px); }
.island-node:nth-child(odd)  { transform: translateX(-100px); }

.island-btn {
    width: 100px;
    height: 100px;
    border-radius: 28px;
    border: none;
    background: rgba(255,255,255,0.05);
    backdrop-filter: blur(10px);
    box-shadow: 0 12px 24px rgba(0,0,0,0.25), inset 0 1px 0 rgba(255,255,255,0.1);
    color: white;
    font-size: 2.5rem;
    cursor: pointer;
    transition: all 0.3s;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.island-btn.current {
    background: var(--holo-3);
    box-shadow: 0 12px 30px rgba(88,204,2,0.35), inset 0 1px 0 rgba(255,255,255,0.3);
    animation: floatIsland 3s ease-in-out infinite;
}

.island-btn.completed {
    background: var(--holo-2);
    box-shadow: 0 12px 24px rgba(28,176,246,0.25), inset 0 1px 0 rgba(255,255,255,0.15);
}

.island-btn.locked {
    opacity: 0.4;
    cursor: not-allowed;
    background: rgba(0,0,0,0.4);
}

.island-btn:not(.locked):hover {
    transform: translateY(-5px) scale(1.05);
}

@keyframes floatIsland {
    0%, 100% { transform: translateY(0); }
    50%      { transform: translateY(-10px); }
}

/* ── NODE BUTTONS (for map.js lesson view) ── */
.node-btn {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    border: none;
    cursor: pointer;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 8px 20px rgba(0,0,0,0.2);
}

.node-btn.current {
    animation: floatIsland 3s ease-in-out infinite;
}

.node-btn.locked {
    opacity: 0.35;
    cursor: not-allowed;
}

.node-btn:not(.locked):hover {
    transform: translateY(-4px) scale(1.08);
}

/* ── LEADERBOARD ── */
.lb-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.lb-item {
    display: flex;
    align-items: center;
    padding: 14px 16px;
    border-radius: var(--radius-sm);
    background: rgba(255,255,255,0.02);
    border: 1px solid transparent;
    transition: background 0.2s;
}

.lb-item:hover {
    background: rgba(255,255,255,0.04);
}

.lb-item.is-me {
    background: rgba(255,200,0,0.08);
    border-color: rgba(255,200,0,0.20);
}

.lb-rank {
    font-size: 1.4rem;
    font-weight: 800;
    width: 40px;
    color: var(--text-dim);
}

.lb-avatar {
    width: 44px; height: 44px;
    border-radius: 12px;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.4rem;
    margin-right: 14px;
}

.lb-info { flex: 1; }
.lb-name { font-weight: 700; font-size: 1rem; }
.lb-xp   { font-weight: 800; color: var(--blue); }

/* ── GRADE FILTER CHIPS ── */
.grade-chip {
    background: transparent;
    border: none;
    color: var(--text-dim);
    padding: 8px 16px;
    border-radius: 12px;
    font-family: var(--font-body);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.25s;
}

.grade-chip:hover {
    color: #fff;
    background: rgba(255,255,255,0.08);
}

.grade-chip.active {
    background: var(--blue);
    color: white;
    box-shadow: 0 4px 12px rgba(28,176,246,0.3);
}

/* ── ACHIEVEMENTS ── */
.completed-achievement {
    animation: glowPulse 2s infinite alternate !important;
}

@keyframes glowPulse {
    from { box-shadow: 0 0 8px rgba(255,200,0,0.15); }
    to   { box-shadow: 0 0 24px rgba(255,200,0,0.6); }
}

/* ── AVATAR PRESETS ── */
.avatar-preset {
    background: rgba(255,255,255,0.05);
    border: 2px solid transparent;
    width: 48px; height: 48px;
    border-radius: 14px;
    font-size: 1.4rem;
    color: #fff;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.avatar-preset:hover {
    border-color: var(--blue);
    background: rgba(28,176,246,0.1);
    transform: scale(1.1);
}

/* ── RESPONSIVE ── */
@media (max-width: 900px) {
    .app-container {
        flex-direction: column;
        padding: 12px;
        gap: 12px;
    }

    .bento-sidebar {
        width: 100%;
        flex-direction: row;
        padding: 12px;
        border-radius: 16px;
        overflow-x: auto;
    }

    .app-logo {
        display: none;
    }

    .nav-menu {
        flex-direction: row;
        gap: 4px;
        width: 100%;
    }

    .nav-btn {
        padding: 10px 14px;
        font-size: 0.85rem;
        gap: 8px;
        white-space: nowrap;
    }

    .nav-btn span { display: none; }

    .bento-main {
        border-radius: 16px;
    }

    .tab-pane {
        padding: 20px;
    }

    .stats-header {
        top: 12px; right: 16px;
    }

    .bento-grid {
        grid-template-columns: 1fr;
    }
}