/* ============================================================
   Zoo Tycoon — "Wildlife Observatory" Redesign
   Deep forest palette · Playfair Display + DM Sans
   Organic textures meet precision UI
   ============================================================ */

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

:root {
    --forest-deep: #070f08;
    --forest-base: #0b1a10;
    --forest-mid: #132a18;
    --forest-light: #1c3a22;
    --forest-pale: #254a2e;
    --amber: #d4a039;
    --amber-light: #e8bf6a;
    --amber-dim: #a07a28;
    --amber-glow: rgba(212, 160, 57, 0.15);
    --sage: #7a9e7e;
    --sage-dim: rgba(122, 158, 126, 0.4);
    --terracotta: #c4654a;
    --terracotta-dim: rgba(196, 101, 74, 0.4);
    --cream: #e8dcc8;
    --cream-dim: rgba(232, 220, 200, 0.5);
    --cream-faint: rgba(232, 220, 200, 0.15);
    --cream-ghost: rgba(232, 220, 200, 0.06);
    --text-primary: #e8dcc8;
    --text-secondary: rgba(232, 220, 200, 0.55);
    --text-muted: rgba(232, 220, 200, 0.3);
    --border-subtle: rgba(232, 220, 200, 0.06);
    --border-mid: rgba(232, 220, 200, 0.1);
    --font-display: 'Playfair Display', Georgia, 'Times New Roman', serif;
    --font-body: 'DM Sans', 'Segoe UI', system-ui, sans-serif;
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;
    --radius-xl: 20px;
    --shadow-soft: 0 2px 12px rgba(0,0,0,0.3);
    --shadow-deep: 0 8px 32px rgba(0,0,0,0.5);
    --transition: 0.18s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ─── Layout: 3-column (ad | game | ad) ─── */
.zoo-layout {
    display: grid;
    grid-template-columns: 160px minmax(0, 680px) 160px;
    grid-template-rows: auto 1fr auto;
    grid-template-areas:
        ".       game   .      "
        "left    game   right  "
        ".       game   .      ";
    justify-content: center;
    gap: 1.5rem;
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 1rem;
    min-height: calc(100vh - 80px);
    font-family: var(--font-body);
    color: var(--text-primary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ─── Ad Slots ─── */
.ad-slot { display: flex; align-items: flex-start; justify-content: center; }
.ad-slot--left  { grid-area: left;  padding-top: 2rem; }
.ad-slot--right { grid-area: right; padding-top: 2rem; }
.ad-slot--top, .ad-slot--bottom { display: none; }

.ad-placeholder {
    background: var(--forest-mid);
    border: 1px dashed rgba(232,220,200,0.06);
    border-radius: var(--radius-md);
    color: var(--text-muted);
    font-size: 0.65rem;
    font-weight: 700;
    letter-spacing: 4px;
    text-align: center;
    padding: 2rem 1rem;
    width: 100%;
    text-transform: uppercase;
}
.ad-placeholder--vertical {
    min-height: 500px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: sticky;
    top: 5rem;
}

/* ─── Game Container ─── */
#zoo-app {
    grid-area: game;
    text-align: center;
    position: relative;
}

.screen { display: none; }
.screen.active { display: block; }
.hidden { display: none !important; }

/* ─── Noise Texture Overlay (organic feel) ─── */
#zoo-app::before {
    content: '';
    position: fixed;
    inset: 0;
    background: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.03'/%3E%3C/svg%3E");
    pointer-events: none;
    z-index: 9999;
    opacity: 0.4;
}

/* ─── Cards ─── */
.card {
    background: var(--forest-mid);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: 1.1rem 1.3rem;
    margin-bottom: 0.75rem;
    position: relative;
    overflow: hidden;
}
.card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--amber-glow), transparent);
}
.card__title {
    font-family: var(--font-display);
    color: var(--amber);
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 3px;
    margin-bottom: 0.75rem;
}

/* ─── Menu Header ─── */
.menu-header {
    padding: 2.5rem 0 1.2rem;
}
.menu-header h1 {
    font-family: var(--font-display);
    font-size: 3.2rem;
    font-weight: 900;
    letter-spacing: 6px;
    color: var(--cream);
    margin: 0;
    line-height: 1;
    background: linear-gradient(175deg, var(--cream) 30%, var(--amber) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: none;
    filter: drop-shadow(0 2px 8px rgba(212,160,57,0.2));
}
.subtitle {
    font-family: var(--font-display);
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-top: 0.5rem;
    font-weight: 400;
    font-style: italic;
    letter-spacing: 1.5px;
}
.intro-text {
    color: var(--text-secondary);
    font-size: 0.85rem;
    line-height: 1.7;
    margin: 0 0 0.75rem 0;
}
.intro-tips {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    margin-top: 0.5rem;
}
.intro-tip {
    font-size: 0.78rem;
    color: var(--text-muted);
    background: rgba(212,160,57,0.05);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    padding: 0.35rem 0.6rem;
    line-height: 1.4;
}
.intro-tip strong { color: var(--cream-dim); }
.control-hint {
    color: var(--text-muted);
    font-size: 0.72rem;
    margin-top: 0.7rem;
    letter-spacing: 0.3px;
}

/* ─── Buttons ─── */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    padding: 0.6rem 1.6rem;
    font-family: var(--font-body);
    font-size: 0.85rem;
    font-weight: 600;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition);
    letter-spacing: 0.5px;
    line-height: 1.4;
    position: relative;
    overflow: hidden;
}
.btn:focus-visible {
    outline: 2px solid var(--amber);
    outline-offset: 2px;
}
.btn--primary {
    background: var(--amber);
    color: var(--forest-deep);
    box-shadow: 0 2px 12px rgba(212,160,57,0.25), inset 0 1px 0 rgba(255,255,255,0.15);
}
.btn--primary:hover {
    background: var(--amber-light);
    box-shadow: 0 4px 20px rgba(212,160,57,0.35), inset 0 1px 0 rgba(255,255,255,0.2);
    transform: translateY(-1px);
}
.btn--primary:active { transform: translateY(0); box-shadow: 0 1px 4px rgba(212,160,57,0.15); }
.btn--primary:disabled {
    background: var(--forest-light);
    color: var(--text-muted);
    cursor: default;
    transform: none;
    box-shadow: none;
}
.btn--lg { padding: 0.85rem 2.8rem; font-size: 0.95rem; border-radius: var(--radius-md); }
.btn--sm { padding: 0.3rem 0.8rem; font-size: 0.72rem; }
.btn--outline {
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border-mid);
}
.btn--outline:hover {
    border-color: var(--amber-dim);
    color: var(--amber-light);
    background: var(--amber-glow);
}
.btn--ghost {
    background: transparent;
    color: var(--text-muted);
    border: none;
    font-size: 0.8rem;
}
.btn--ghost:hover { color: var(--text-secondary); }

.menu-best {
    color: var(--accent);
    opacity: 0.6;
    font-size: 0.85rem;
    font-weight: 600;
    margin: 0.4rem 0 0;
    font-variant-numeric: tabular-nums;
}
.menu-actions {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.55rem;
    margin: 1.5rem 0 0.8rem;
}

/* ─── Difficulty Selector ─── */
.difficulty-selector {
    display: flex;
    gap: 0.35rem;
    justify-content: center;
    margin-bottom: 0.6rem;
}
.diff-btn {
    padding: 0.4rem 0.9rem;
    font-family: var(--font-body);
    font-size: 0.75rem;
    font-weight: 600;
    background: var(--forest-base);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    color: var(--text-muted);
    cursor: pointer;
    transition: all var(--transition);
    letter-spacing: 0.3px;
}
.diff-btn:hover {
    border-color: var(--amber-dim);
    color: var(--text-secondary);
    background: var(--amber-glow);
}
.diff-btn.active {
    background: rgba(212,160,57,0.12);
    border-color: var(--amber);
    color: var(--amber);
    box-shadow: 0 0 8px rgba(212,160,57,0.12);
}
.diff-desc {
    color: var(--text-muted);
    font-size: 0.72rem;
    font-style: italic;
    margin: 0;
    min-height: 1.2em;
    transition: color var(--transition);
}

/* ─── Volume ─── */
.volume-controls {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
}
.vol-row {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
}
.vol-name {
    font-size: 0.72rem;
    color: var(--text-muted);
    width: 28px;
    text-align: right;
    font-weight: 600;
    letter-spacing: 1px;
    text-transform: uppercase;
}
.vol-slider {
    flex: 1;
    height: 3px;
    accent-color: var(--amber);
    cursor: pointer;
    border-radius: 2px;
}
.vol-val {
    font-size: 0.68rem;
    color: var(--text-muted);
    width: 22px;
    text-align: right;
    font-variant-numeric: tabular-nums;
}

/* ─── HUD ─── */
#game-hud {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.55rem 0.9rem;
    background: var(--forest-mid);
    border: 1px solid var(--border-subtle);
    border-bottom: none;
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    gap: 0.4rem;
    position: relative;
}
#game-hud::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 5%;
    right: 5%;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border-mid), transparent);
}
.hud__cell {
    display: flex;
    flex-direction: column;
    gap: 0.1rem;
}
.hud__cell--right { text-align: right; align-items: flex-end; }
.hud__label {
    font-size: 0.55rem;
    font-weight: 700;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1.5px;
}
.hud__value {
    font-family: var(--font-display);
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--amber);
    font-variant-numeric: tabular-nums;
    line-height: 1;
}
.hud__value--sub {
    font-size: 0.85rem;
    color: var(--cream-dim);
    font-family: var(--font-body);
    font-weight: 600;
}
.hud__value--tiny {
    font-size: 0.58rem;
    font-family: var(--font-body);
    font-weight: 600;
    opacity: 0.8;
    line-height: 1;
}

/* ─── Speed Controls ─── */
.speed-controls {
    display: flex;
    gap: 0.2rem;
}
.speed-btn {
    padding: 0.2rem 0.45rem;
    font-size: 0.65rem;
    font-weight: 700;
    font-family: var(--font-body);
    background: var(--forest-base);
    border: 1px solid var(--border-subtle);
    border-radius: 4px;
    color: var(--text-muted);
    cursor: pointer;
    transition: all var(--transition);
    line-height: 1;
}
.speed-btn:hover {
    border-color: var(--amber-dim);
    color: var(--text-secondary);
}
.speed-btn.active {
    background: rgba(212,160,57,0.12);
    border-color: var(--amber-dim);
    color: var(--amber);
}

/* ─── Canvas ─── */
.canvas-wrap {
    position: relative;
    line-height: 0;
}
#game-canvas {
    background: var(--forest-deep);
    border: 1px solid var(--border-subtle);
    border-top: none;
    display: block;
    margin: 0 auto;
    max-width: 100%;
    height: auto;
    touch-action: none;
}

/* ─── Side Panels (Research, Staff, Stats) ─── */
.side-panel {
    position: absolute;
    right: 6px;
    top: 6px;
    width: 210px;
    max-height: 430px;
    overflow-y: auto;
    background: rgba(11, 26, 16, 0.95);
    border: 1px solid var(--amber-dim);
    border-radius: var(--radius-md);
    padding: 0.8rem;
    z-index: 20;
    font-size: 0.73rem;
    color: var(--text-secondary);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: var(--shadow-deep);
}
.side-panel.hidden { display: none; }
.side-panel::-webkit-scrollbar { width: 4px; }
.side-panel::-webkit-scrollbar-track { background: transparent; }
.side-panel::-webkit-scrollbar-thumb { background: var(--forest-pale); border-radius: 2px; }

.panel-title {
    font-family: var(--font-display);
    color: var(--amber);
    font-size: 0.9rem;
    font-weight: 700;
    margin-bottom: 0.6rem;
    letter-spacing: 1px;
    padding-bottom: 0.4rem;
    border-bottom: 1px solid var(--border-mid);
}
.panel-subtitle {
    color: var(--text-muted);
    font-size: 0.6rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    margin: 0.7rem 0 0.3rem;
    padding-top: 0.5rem;
    border-top: 1px solid var(--border-subtle);
}
.panel-info {
    color: var(--text-secondary);
    margin-bottom: 0.3rem;
}
.panel-unlock {
    color: var(--sage);
    font-size: 0.68rem;
    margin-bottom: 0.5rem;
    font-weight: 500;
}
.staff-row {
    display: flex;
    align-items: center;
    gap: 0.3rem;
    padding: 0.3rem 0;
}
.staff-name {
    flex: 1;
    color: var(--text-secondary);
    font-size: 0.7rem;
    font-weight: 500;
}
.staff-cost {
    color: var(--text-muted);
    font-size: 0.62rem;
    font-variant-numeric: tabular-nums;
}
.staff-desc {
    color: var(--text-muted);
    font-size: 0.58rem;
    margin-bottom: 0.3rem;
    padding-left: 0.2rem;
    line-height: 1.4;
}
.btn--hire, .btn--fire {
    padding: 0.15rem 0.45rem;
    font-size: 0.58rem;
    font-weight: 700;
    font-family: var(--font-body);
    border-radius: 3px;
    cursor: pointer;
    border: none;
    transition: all var(--transition);
    letter-spacing: 0.5px;
    text-transform: uppercase;
}
.btn--hire {
    background: rgba(122,158,126,0.15);
    color: var(--sage);
    border: 1px solid var(--sage-dim);
}
.btn--hire:hover { background: rgba(122,158,126,0.25); }
.btn--hire:disabled { opacity: 0.3; cursor: default; }
.btn--fire {
    background: rgba(196,101,74,0.15);
    color: var(--terracotta);
    border: 1px solid var(--terracotta-dim);
}
.btn--fire:hover { background: rgba(196,101,74,0.25); }

.stat-line {
    display: flex;
    justify-content: space-between;
    padding: 0.25rem 0;
    border-bottom: 1px solid var(--border-subtle);
    font-size: 0.7rem;
}
.stat-line .positive { color: var(--sage); font-weight: 600; }
.stat-line .negative { color: var(--terracotta); font-weight: 600; }
.stat-divider {
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border-mid), transparent);
    margin: 0.3rem 0;
}

/* ─── Loan Panel ─── */
.loan-info {
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
    margin-bottom: 0.5rem;
}
.loan-row {
    display: flex;
    justify-content: space-between;
    font-size: 0.7rem;
    color: var(--text-secondary);
}
.loan-row .loan-val {
    font-weight: 700;
    font-variant-numeric: tabular-nums;
    color: var(--cream);
}
.loan-row .loan-val.debt { color: var(--terracotta); }
.btn--loan {
    width: 100%;
    padding: 0.4rem;
    font-size: 0.72rem;
    font-weight: 700;
    font-family: var(--font-body);
    background: rgba(122,158,126,0.12);
    color: var(--sage);
    border: 1px solid var(--sage-dim);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition);
    margin-top: 0.3rem;
}
.btn--loan:hover { background: rgba(122,158,126,0.22); }
.btn--loan:disabled { opacity: 0.3; cursor: default; }
.btn--repay {
    background: rgba(212,160,57,0.1);
    color: var(--amber);
    border-color: var(--amber-dim);
}
.btn--repay:hover { background: rgba(212,160,57,0.2); }

/* ─── Tool Palette ─── */
.tool-divider {
    width: 1px;
    align-self: stretch;
    background: var(--border-mid);
    margin: 0.2rem 0.15rem;
}

.tool-palette {
    display: flex;
    gap: 0.25rem;
    justify-content: center;
    flex-wrap: wrap;
    padding: 0.5rem 0.4rem;
    background: var(--forest-mid);
    border: 1px solid var(--border-subtle);
    border-top: none;
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}
.tool-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.12rem;
    padding: 0.35rem 0.5rem;
    background: var(--forest-base);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    color: var(--text-muted);
    cursor: pointer;
    font-family: var(--font-body);
    font-size: 0.68rem;
    font-weight: 500;
    transition: all var(--transition);
    min-width: 48px;
}
.tool-btn:hover {
    border-color: var(--amber-dim);
    background: var(--amber-glow);
    color: var(--text-secondary);
}
.tool-btn.selected {
    border-color: var(--amber);
    background: rgba(212,160,57,0.1);
    color: var(--amber);
    box-shadow: 0 0 8px rgba(212,160,57,0.15);
}
.tool-icon { font-size: 1rem; line-height: 1; }
.tool-label { font-size: 0.55rem; letter-spacing: 0.5px; font-weight: 600; }

/* ─── Sub Palette ─── */
.sub-palette {
    display: flex;
    gap: 0.35rem;
    justify-content: flex-start;
    flex-wrap: nowrap;
    overflow-x: auto;
    overflow-y: hidden;
    padding: 0.45rem 0.6rem;
    background: rgba(12, 28, 16, 0.92);
    border: 1px solid var(--border-subtle);
    border-top: none;
    border-radius: 0 0 var(--radius-md) var(--radius-md);
    margin-top: -1px;
    scrollbar-width: thin;
    scrollbar-color: var(--border-mid) transparent;
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
}
.sub-palette::-webkit-scrollbar { height: 3px; }
.sub-palette::-webkit-scrollbar-track { background: transparent; }
.sub-palette::-webkit-scrollbar-thumb { background: var(--border-mid); border-radius: 2px; }
.sub-btn {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.1rem;
    padding: 0.35rem 0.6rem;
    background: var(--forest-base);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    cursor: pointer;
    font-family: var(--font-body);
    font-size: 0.68rem;
    transition: all var(--transition);
    min-width: 100px;
    flex-shrink: 0;
    text-align: left;
}
.sub-btn:hover {
    border-color: var(--amber-dim);
    background: var(--amber-glow);
}
.sub-btn.selected {
    border-color: var(--amber);
    background: rgba(212,160,57,0.08);
    color: var(--amber);
}
.sub-btn .sub-cost {
    font-size: 0.6rem;
    color: var(--amber-dim);
    font-variant-numeric: tabular-nums;
    font-weight: 600;
    margin-top: 0.1rem;
}
.sub-btn.selected .sub-cost { color: var(--amber); }
.sub-btn.disabled {
    opacity: 0.3;
    cursor: not-allowed;
}
.sub-habitat {
    font-size: 0.52rem;
    color: var(--text-muted);
    display: block;
    margin-top: 0.05rem;
}
.sub-main {
    font-weight: 700;
    font-size: 0.7rem;
    color: var(--cream);
    display: block;
    line-height: 1.2;
}
.sub-detail {
    font-size: 0.54rem;
    color: var(--text-muted);
    display: block;
    line-height: 1.3;
    text-align: left;
    white-space: nowrap;
}
.sub-btn .sub-detail { margin-top: 0.05rem; }
.sub-btn.selected .sub-main { color: var(--amber); }

/* ─── Info Panel ─── */
.info-panel {
    position: absolute;
    bottom: 60px;
    left: 8px;
    background: rgba(11,26,16,0.92);
    border: 1px solid var(--amber-dim);
    border-radius: var(--radius-md);
    padding: 0.6rem 0.8rem;
    font-size: 0.72rem;
    color: var(--text-secondary);
    pointer-events: none;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    max-width: 220px;
    z-index: 10;
    box-shadow: var(--shadow-soft);
}
.info-panel .info-title {
    font-family: var(--font-display);
    color: var(--amber);
    font-weight: 600;
    font-size: 0.8rem;
    margin-bottom: 0.25rem;
}
.info-panel .info-row {
    display: flex;
    justify-content: space-between;
    gap: 0.5rem;
}

/* ─── Achievement Toast ─── */
.achievement-toast {
    position: absolute;
    top: 12px;
    right: 12px;
    background: rgba(11,26,16,0.95);
    border: 1px solid var(--amber);
    border-radius: var(--radius-md);
    padding: 0.6rem 1rem;
    z-index: 35;
    pointer-events: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: 0 0 20px rgba(212,160,57,0.2), var(--shadow-soft);
    animation: achieveIn 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}
.achievement-toast.hidden { display: none !important; }
.achievement-toast .ach-icon {
    font-size: 1.3rem;
    line-height: 1;
}
.achievement-toast .ach-text {
    display: flex;
    flex-direction: column;
    gap: 0.1rem;
}
.achievement-toast .ach-label {
    font-size: 0.55rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--amber);
}
.achievement-toast .ach-name {
    font-size: 0.78rem;
    color: var(--cream);
    font-weight: 600;
}
@keyframes achieveIn {
    0%   { opacity: 0; transform: translateX(20px) scale(0.9); }
    100% { opacity: 1; transform: translateX(0) scale(1); }
}

/* ─── Achievement Summary (Game Over) ─── */
#achievement-summary {
    width: 100%;
    margin-top: 0.3rem;
}
.ach-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.3rem;
    justify-content: center;
}
.ach-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.2rem 0.5rem;
    border-radius: 100px;
    font-size: 0.62rem;
    font-weight: 600;
    border: 1px solid var(--border-subtle);
}
.ach-badge.earned {
    background: rgba(212,160,57,0.1);
    border-color: var(--amber-dim);
    color: var(--amber-light);
}
.ach-badge.locked {
    background: var(--forest-base);
    color: var(--text-muted);
    opacity: 0.5;
}
.ach-badge .ach-badge-icon {
    font-size: 0.72rem;
    line-height: 1;
}

/* ─── Undo Toast ─── */
.undo-toast {
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(11,26,16,0.9);
    border: 1px solid var(--border-mid);
    border-radius: var(--radius-sm);
    padding: 0.3rem 0.8rem;
    font-size: 0.7rem;
    color: var(--text-secondary);
    z-index: 30;
    pointer-events: none;
    animation: toastFade 1.2s ease forwards;
}
@keyframes toastFade {
    0% { opacity: 0; transform: translateX(-50%) translateY(-8px); }
    15% { opacity: 1; transform: translateX(-50%) translateY(0); }
    70% { opacity: 1; }
    100% { opacity: 0; transform: translateX(-50%) translateY(-4px); }
}

/* ─── Day Summary Toast ─── */
.day-summary {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: rgba(11,26,16,0.95);
    border: 1px solid var(--amber-dim);
    border-radius: var(--radius-lg);
    padding: 1.3rem 1.6rem;
    text-align: center;
    z-index: 50;
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    box-shadow: var(--shadow-deep);
    animation: summaryIn 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}
.day-summary h3 {
    font-family: var(--font-display);
    color: var(--amber);
    font-size: 1rem;
    margin-bottom: 0.5rem;
}
.day-summary .summary-row {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    font-size: 0.78rem;
    color: var(--text-secondary);
    padding: 0.15rem 0;
}
.day-summary .summary-row .positive { color: var(--sage); }
.day-summary .summary-row .negative { color: var(--terracotta); }

.day-summary .summary-total {
    display: flex;
    justify-content: space-between;
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--cream);
    padding-top: 0.35rem;
    margin-top: 0.2rem;
    border-top: 1px solid var(--border-mid);
}
.day-summary .summary-total .positive { color: var(--sage); }
.day-summary .summary-total .negative { color: var(--terracotta); }
.day-summary .summary-chart {
    margin: 0.5rem 0 0.2rem;
    display: flex;
    align-items: flex-end;
    gap: 2px;
    height: 40px;
    justify-content: center;
}
.day-summary .chart-bar {
    width: 6px;
    background: var(--sage);
    border-radius: 2px 2px 0 0;
    min-height: 2px;
    transition: height 0.3s ease;
}
.day-summary .chart-bar.negative-bar { background: var(--terracotta); }
.day-summary .dismiss-hint {
    color: var(--text-muted);
    font-size: 0.6rem;
    margin-top: 0.5rem;
    letter-spacing: 0.5px;
}

@keyframes summaryIn {
    from { opacity: 0; transform: translate(-50%, -45%) scale(0.95); }
    to   { opacity: 1; transform: translate(-50%, -50%) scale(1); }
}

/* ─── Overlays ─── */
.overlay {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(7,15,8,0.85);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 100;
}
.overlay__box {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.8rem;
    padding: 2.2rem 3.2rem;
    background: var(--forest-mid);
    border: 1px solid var(--border-mid);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-deep);
    position: relative;
    overflow: hidden;
}
.overlay__box::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--amber), transparent);
}
.overlay__box h2 {
    font-family: var(--font-display);
    color: var(--cream);
    font-size: 1.4rem;
    font-weight: 700;
    letter-spacing: 2px;
    margin-bottom: 0.3rem;
}

/* ─── Confirm Dialog ─── */
.confirm-dialog {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: rgba(11,26,16,0.97);
    border: 1px solid var(--terracotta-dim);
    border-radius: var(--radius-md);
    padding: 1rem 1.2rem;
    z-index: 60;
    text-align: center;
    box-shadow: var(--shadow-deep);
}
.confirm-dialog p {
    color: var(--text-secondary);
    font-size: 0.8rem;
    margin-bottom: 0.7rem;
}
.confirm-actions {
    display: flex;
    gap: 0.5rem;
    justify-content: center;
}

/* ─── New Best ─── */
.new-best-overlay {
    background: rgba(7,15,8,0.6) !important;
    pointer-events: none;
}
.new-best-text {
    font-family: var(--font-display) !important;
    color: var(--amber-light) !important;
    font-size: 3rem !important;
    font-weight: 900;
    letter-spacing: 3px;
    text-shadow: 0 0 40px rgba(212,160,57,0.5), 0 0 80px rgba(212,160,57,0.2);
    animation: newBestPulse 0.6s ease-out;
}
@keyframes newBestPulse {
    0%   { transform: scale(0.5); opacity: 0; }
    50%  { transform: scale(1.12); }
    100% { transform: scale(1); opacity: 1; }
}

/* ─── Result Card (Game Over) ─── */
.result-card {
    max-width: 400px;
    margin: 2rem auto;
    padding: 2.2rem 1.8rem;
    background: var(--forest-mid);
    border: 1px solid var(--border-mid);
    border-radius: var(--radius-xl);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    box-shadow: var(--shadow-deep);
    position: relative;
    overflow: hidden;
}
.result-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--amber), transparent);
}
.result-card h2 {
    font-family: var(--font-display);
    color: var(--cream);
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 0.3rem;
}
.result-score {
    font-family: var(--font-display);
    font-size: 2.2rem;
    font-weight: 900;
    color: var(--amber);
    font-variant-numeric: tabular-nums;
}
.result-best {
    font-size: 0.82rem;
    color: var(--text-muted);
}
.result-actions {
    display: flex;
    gap: 0.6rem;
    margin-top: 0.8rem;
}
#nickname {
    padding: 0.55rem 1rem;
    font-size: 0.85rem;
    font-family: var(--font-body);
    background: var(--forest-base);
    border: 1px solid var(--border-mid);
    color: var(--cream);
    border-radius: var(--radius-sm);
    width: 200px;
    text-align: center;
    transition: border-color var(--transition);
}
#nickname:focus {
    outline: none;
    border-color: var(--amber);
    box-shadow: 0 0 0 3px var(--amber-glow);
}
#nickname::placeholder { color: var(--text-muted); }

/* ─── Game Stats ─── */
.game-stats {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    justify-content: center;
    margin: 0.5rem 0;
    width: 100%;
}
.game-stats .stat-item {
    background: var(--forest-base);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    padding: 0.35rem 0.7rem;
    font-size: 0.72rem;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 0.3rem;
}
.game-stats .stat-item .stat-val {
    color: var(--cream);
    font-weight: 700;
    font-size: 0.82rem;
    font-variant-numeric: tabular-nums;
}

/* ─── Leaderboard ─── */
.lb-card {
    max-width: 420px;
    margin: 2rem auto;
    padding: 1.8rem;
    background: var(--forest-mid);
    border: 1px solid var(--border-mid);
    border-radius: var(--radius-xl);
    text-align: center;
    box-shadow: var(--shadow-deep);
    position: relative;
    overflow: hidden;
}
.lb-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--amber), transparent);
}
.lb-card h2 {
    font-family: var(--font-display);
    color: var(--cream);
    font-size: 1.15rem;
    font-weight: 700;
    letter-spacing: 2px;
    margin-bottom: 1.2rem;
}
#leaderboard-list {
    text-align: left;
    list-style: none;
    padding: 0;
    margin: 0 0 1rem;
}
#leaderboard-list li {
    display: flex;
    align-items: center;
    padding: 0.6rem 0.7rem;
    border-radius: var(--radius-sm);
    transition: background var(--transition);
}
#leaderboard-list li:nth-child(odd) {
    background: var(--forest-base);
}
#leaderboard-list li:hover {
    background: var(--amber-glow);
}
#leaderboard-list li .rank {
    color: var(--text-muted);
    font-family: var(--font-display);
    font-weight: 700;
    width: 28px;
    font-size: 0.85rem;
    font-variant-numeric: tabular-nums;
}
#leaderboard-list li:nth-child(1) .rank { color: var(--amber); }
#leaderboard-list li:nth-child(2) .rank { color: #b0bec5; }
#leaderboard-list li:nth-child(3) .rank { color: #a1887f; }
#leaderboard-list li .lb-name {
    flex: 1;
    color: var(--text-secondary);
    font-size: 0.82rem;
}
#leaderboard-list li .lb-score {
    color: var(--amber);
    font-weight: 700;
    font-size: 0.82rem;
    font-variant-numeric: tabular-nums;
    font-family: var(--font-display);
}
#leaderboard-list li .lb-time {
    color: var(--text-muted);
    font-size: 0.68rem;
    margin-left: 0.6rem;
    white-space: nowrap;
}

/* ─── Responsive: Tablet ─── */
@media (max-width: 960px) {
    .zoo-layout {
        grid-template-columns: 1fr;
        grid-template-areas: "game";
        max-width: 680px;
        gap: 0;
    }
    .ad-slot--left, .ad-slot--right { display: none; }
    .ad-slot--top, .ad-slot--bottom {
        display: flex;
        grid-area: unset;
        justify-content: center;
        padding: 0.5rem 0;
    }
    .zoo-layout {
        grid-template-areas:
            "top"
            "game"
            "bottom";
        grid-template-rows: auto 1fr auto;
    }
    .ad-slot--top    { grid-area: top; }
    .ad-slot--bottom { grid-area: bottom; }
    .ad-placeholder--vertical { min-height: unset; position: static; }
    .ad-placeholder { min-height: 60px; padding: 1rem; }
}

/* ─── Responsive: Mobile ─── */
@media (max-width: 480px) {
    .zoo-layout { padding: 0 0.5rem; }
    .menu-header { padding: 1.5rem 0 1rem; }
    .menu-header h1 { font-size: 2.2rem; letter-spacing: 4px; }
    .card { padding: 0.8rem; }
    .btn--lg { padding: 0.7rem 2rem; font-size: 0.9rem; }
    #game-hud { padding: 0.4rem 0.5rem; gap: 0.25rem; flex-wrap: wrap; }
    .hud__value { font-size: 0.85rem; }
    .hud__label { font-size: 0.5rem; }
    #nickname { width: 170px; }
    .result-card { margin: 1rem auto; padding: 1.5rem 1rem; }
    .tool-btn { min-width: 38px; padding: 0.25rem 0.35rem; }
    .tool-icon { font-size: 0.85rem; }
    .tool-label { font-size: 0.5rem; }
    .side-panel { width: 170px; font-size: 0.68rem; }
    .difficulty-selector { flex-wrap: wrap; }
    .diff-btn { padding: 0.35rem 0.7rem; font-size: 0.7rem; }
}

/* ─── Reduced Motion ─── */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}