:root {
    --bg-color: #0d3b2e;
    /* Deep Forest Green */
    --accent-color: #1a7a60;
    --text-color: #e0f2f1;
    --card-white: #ffffff;
    --card-red: #d32f2f;
    --card-black: #1a1a1a;
    --glass-bg: rgba(255, 255, 255, 0.1);
    --glass-border: rgba(255, 255, 255, 0.15);
    --shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.3);
}

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

body {
    font-family: 'Outfit', sans-serif;
    background-color: var(--bg-color);
    background-image:
        radial-gradient(circle at 20% 20%, rgba(26, 122, 96, 0.4) 0%, transparent 40%),
        radial-gradient(circle at 80% 80%, rgba(26, 122, 96, 0.3) 0%, transparent 40%);
    color: var(--text-color);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

.game-container {
    width: 95vw;
    max-width: 1200px;
    display: flex;
    flex-direction: column;
    gap: clamp(10px, 1.5vh, 20px);
    padding: 1vh 0;
    justify-content: flex-start !important;
    min-height: auto !important;
}

.game-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: clamp(8px, 1.2vh, 15px) 25px;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    box-shadow: var(--shadow);
}

.logo {
    font-size: 1.5rem;
    font-weight: 600;
    letter-spacing: 2px;
}

.stats {
    display: flex;
    gap: 30px;
}

.stat-item {
    font-size: 1.1rem;
    opacity: 0.9;
}

.stat-item span {
    font-weight: 600;
    color: #fff;
}

.controls {
    display: flex;
    gap: 10px;
}

.glass-btn {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    color: #fff;
    padding: 8px 20px;
    border-radius: 12px;
    cursor: pointer;
    font-family: inherit;
    font-size: 0.9rem;
    transition: all 0.3s ease;
}

.glass-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

.glass-btn.primary {
    background: rgba(255, 255, 255, 0.25);
    font-weight: 600;
}

/* Board Layout */
.game-board {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.top-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: clamp(20px, 5vw, 100px);
}

.free-cells,
.foundations {
    display: flex;
    gap: clamp(6px, 1vw, 15px);
}

.cell,
.foundation {
    width: clamp(60px, 10vw, 100px);
    height: clamp(84px, 14vw, 140px);
    background: var(--glass-bg);
    border: 2px dashed var(--glass-border);
    border-radius: 10px;
    position: relative;
}

.foundation::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 2rem;
    opacity: 0.1;
}

.foundation[data-suit="h"]::after {
    content: '♥';
    color: var(--card-red);
}

.foundation[data-suit="d"]::after {
    content: '♦';
    color: var(--card-red);
}

.foundation[data-suit="c"]::after {
    content: '♣';
}

.foundation[data-suit="s"]::after {
    content: '♠';
}

.tableau {
    display: flex;
    justify-content: space-between;
    height: 100%;
}

.column {
    width: clamp(60px, 10vw, 100px);
    min-height: 45vh;
    position: relative;
}

/* Card Styling */
.card {
    width: clamp(60px, 10vw, 100px);
    height: clamp(84px, 14vw, 140px);
    background: var(--card-white);
    border-radius: 8px;
    position: absolute;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
    cursor: grab;
    user-select: none;
    transition: transform 0.2s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    display: flex;
    flex-direction: column;
    padding: clamp(4px, 0.6vw, 8px);
    color: var(--card-black);
}

.card.red {
    color: var(--card-red);
}

.card .rank {
    font-weight: 600;
    font-size: clamp(0.8rem, 1.2vw, 1.2rem);
    line-height: 1;
}

.card .suit {
    font-size: clamp(0.8rem, 1.2vw, 1.2rem);
    line-height: 1;
}

.card .center-suit {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: clamp(1.5rem, 2.5vw, 2.5rem);
}

.card:active {
    cursor: grabbing;
}

.card.dragging {
    opacity: 0.8;
    scale: 1.05;
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.4);
    z-index: 1000 !important;
}

/* Overlays */
.overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(5px);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 2000;
}

.overlay.hidden {
    display: none;
}

.overlay-content {
    background: var(--glass-bg);
    padding: 50px;
    border-radius: 30px;
    text-align: center;
    border: 1px solid var(--glass-border);
}

.overlay-content h1 {
    font-size: 3rem;
    margin-bottom: 10px;
}

.overlay-content p {
    font-size: 1.2rem;
    margin-bottom: 30px;
}

.overlay-content .primary.large {
    padding: 15px 40px;
    font-size: 1.2rem;
}