* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    user-select: none;
    -webkit-user-select: none;
    -webkit-tap-highlight-color: transparent;
}

:root {
    --bg-main: #0b0f19;
    --card-red: #ef4444;
    --card-green: #10b981;
    --card-blue: #3b82f6;
    --card-yellow: #facc15;
    --card-wild: #8b5cf6;
    --text: #f8fafc;
    --text-muted: #94a3b8;
}

body {
    background: radial-gradient(circle at 50% 20%, #1e1b4b, var(--bg-main) 75%);
    color: var(--text);
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    overflow-x: hidden;
    overflow-y: auto;
    padding-bottom: 75px; /* Space for bottom banner ad */
}

/* Header & Turn HUD */
header {
    width: 100%;
    max-width: 560px;
    padding: 8px 14px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(11, 15, 25, 0.9);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    position: sticky;
    top: 0;
    z-index: 50;
}

.title-group h1 {
    font-size: 1.15rem;
    font-weight: 900;
    background: linear-gradient(135deg, #ef4444, #facc15, #10b981, #3b82f6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: flex;
    align-items: center;
    gap: 6px;
}

.hud-turn-badge {
    display: flex;
    align-items: center;
    gap: 8px;
    background: rgba(30, 41, 59, 0.85);
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.82rem;
    font-weight: 700;
}

.turn-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: #10b981;
    box-shadow: 0 0 8px #10b981;
    animation: turnPulse 1.5s infinite;
}

@keyframes turnPulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(0.85); }
}

/* Player Mode Toolbar */
.toolbar {
    width: 100%;
    max-width: 560px;
    padding: 6px 12px;
    display: flex;
    justify-content: center;
    gap: 8px;
}

.pill-btn {
    background: rgba(30, 41, 59, 0.7);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    color: var(--text-muted);
    padding: 4px 12px;
    font-size: 0.78rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.2s;
}

.pill-btn.active, .pill-btn:hover {
    background: rgba(59, 130, 246, 0.4);
    border-color: #3b82f6;
    color: #fff;
}

/* Card Table Arena */
.game-arena {
    width: 100%;
    max-width: 560px;
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: 10px 12px;
    position: relative;
    min-height: 520px;
}

/* Opponent Areas */
.opponents-top {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 16px;
    min-height: 70px;
}

.opponents-sides {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.bot-badge {
    background: rgba(15, 23, 42, 0.85);
    border: 1.5px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    padding: 6px 12px;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 3px;
    transition: all 0.25s;
}

.bot-badge.active-turn {
    border-color: #facc15;
    box-shadow: 0 0 16px rgba(250, 204, 21, 0.45);
    transform: scale(1.05);
}

.bot-name {
    font-size: 0.75rem;
    font-weight: 700;
    color: #cbd5e1;
}

.bot-cards-count {
    font-size: 0.85rem;
    font-weight: 800;
    color: #38bdf8;
}

/* Center Table: Deck, Discard, Direction, 1-Card Button */
.table-center {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 24px;
    margin: 15px 0;
    position: relative;
}

.deck-slot {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    cursor: pointer;
}

.deck-label {
    font-size: 0.7rem;
    font-weight: 700;
    color: var(--text-muted);
    text-transform: uppercase;
}

.direction-indicator {
    position: absolute;
    top: -24px;
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.75rem;
    font-weight: 700;
    color: #94a3b8;
    background: rgba(30, 41, 59, 0.6);
    padding: 2px 10px;
    border-radius: 12px;
}

/* ONE CARD! Warning Alert Button */
.one-card-btn {
    position: absolute;
    bottom: -32px;
    background: linear-gradient(135deg, #ef4444, #f59e0b);
    color: #fff;
    border: 2px solid #fff;
    border-radius: 24px;
    padding: 6px 18px;
    font-size: 0.85rem;
    font-weight: 900;
    letter-spacing: 0.8px;
    cursor: pointer;
    box-shadow: 0 0 16px rgba(239, 68, 68, 0.6);
    display: none;
    animation: oneCardPulse 0.9s infinite alternate;
}

.one-card-btn.visible {
    display: block;
}

@keyframes oneCardPulse {
    from { transform: scale(1); box-shadow: 0 0 10px rgba(239, 68, 68, 0.5); }
    to { transform: scale(1.08); box-shadow: 0 0 25px rgba(250, 204, 21, 0.9); }
}

/* Player Hand Container */
.player-hand-section {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    width: 100%;
}

.hand-label-row {
    display: flex;
    justify-content: space-between;
    width: 100%;
    padding: 0 8px;
    font-size: 0.78rem;
    font-weight: 700;
    color: var(--text-muted);
}

.player-cards-tray {
    display: flex;
    justify-content: center;
    align-items: flex-end;
    width: 100%;
    min-height: 115px;
    overflow-x: auto;
    padding: 10px 4px 4px 4px;
    scrollbar-width: thin;
}

/* Card Visual Design */
.card-item {
    width: 62px;
    height: 94px;
    border-radius: 10px;
    background: #1e1b4b;
    border: 2px solid rgba(255, 255, 255, 0.3);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: 5px 6px;
    color: #fff;
    font-weight: 900;
    position: relative;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
    cursor: pointer;
    transition: transform 0.15s cubic-bezier(0.175, 0.885, 0.32, 1.275), box-shadow 0.15s;
    margin-left: -18px; /* Overlap cards in hand */
}

.card-item:first-child {
    margin-left: 0;
}

.card-item.playable {
    border-color: #facc15;
    box-shadow: 0 0 12px rgba(250, 204, 21, 0.7);
    transform: translateY(-8px);
}

.card-item.playable:hover {
    transform: translateY(-16px) scale(1.06);
    z-index: 30;
}

/* Card Colors */
.card-item.red { background: linear-gradient(145deg, #ef4444, #b91c1c); }
.card-item.green { background: linear-gradient(145deg, #10b981, #047857); }
.card-item.blue { background: linear-gradient(145deg, #3b82f6, #1d4ed8); }
.card-item.yellow { background: linear-gradient(145deg, #facc15, #d97706); color: #0f172a; }
.card-item.wild { background: linear-gradient(135deg, #ef4444, #3b82f6, #10b981, #facc15); text-shadow: 0 0 5px rgba(0,0,0,0.8); }

/* Face-down deck card */
.card-item.face-down {
    background: radial-gradient(circle, #312e81, #0f172a);
    border: 2px solid rgba(255, 255, 255, 0.25);
    display: flex;
    justify-content: center;
    align-items: center;
}

.card-center-oval {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) rotate(-25deg);
    width: 44px;
    height: 64px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.22);
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.4rem;
}

.card-corner-top {
    align-self: flex-start;
    font-size: 0.75rem;
    line-height: 1;
}

.card-corner-bottom {
    align-self: flex-end;
    font-size: 0.75rem;
    line-height: 1;
    transform: rotate(180deg);
}

/* Draw deck pulse when player must draw */
.deck-slot.must-draw .card-item.face-down {
    border-color: #38bdf8;
    box-shadow: 0 0 16px rgba(56, 189, 248, 0.8);
    animation: drawPulse 1s infinite alternate;
}

@keyframes drawPulse {
    from { transform: scale(1); }
    to { transform: scale(1.06); }
}

/* Modals */
.modal {
    position: fixed;
    inset: 0;
    background: rgba(11, 15, 25, 0.85);
    backdrop-filter: blur(10px);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 100;
    padding: 16px;
}

.modal.active {
    display: flex;
}

.modal-box {
    background: #0f172a;
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 20px;
    padding: 24px;
    width: 100%;
    max-width: 360px;
    text-align: center;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.8);
    animation: popModal 0.25s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

@keyframes popModal {
    from { transform: scale(0.85); opacity: 0; }
    to { transform: scale(1); opacity: 1; }
}

.modal-box h2 {
    font-size: 1.5rem;
    font-weight: 900;
    margin-bottom: 12px;
}

/* Color Picker Wheel Grid */
.color-picker-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin: 20px 0;
}

.color-choice-btn {
    height: 70px;
    border-radius: 14px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    font-size: 1.1rem;
    font-weight: 900;
    color: #fff;
    cursor: pointer;
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.4);
    transition: transform 0.1s;
}

.color-choice-btn.red { background: #ef4444; }
.color-choice-btn.green { background: #10b981; }
.color-choice-btn.blue { background: #3b82f6; }
.color-choice-btn.yellow { background: #facc15; color: #0f172a; }

.color-choice-btn:active {
    transform: scale(0.92);
}

.action-btn {
    width: 100%;
    padding: 14px;
    background: linear-gradient(135deg, #10b981, #3b82f6);
    color: #fff;
    font-size: 1rem;
    font-weight: 900;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    box-shadow: 0 0 20px rgba(16, 185, 129, 0.4);
    margin-top: 15px;
}

.action-btn:active {
    transform: scale(0.96);
}