/* Beat The Jack! - CSS Variables & Base */
:root {
    --felt-green: #0d5c2e;
    --felt-dark: #073d1d;
    --gold: #d4af37;
    --gold-light: #f4d03f;
    --card-white: #fefefe;
    --red-suit: #c41e3a;
    --black-suit: #1a1a2e;
    --success: #00d26a;
    --error: #ff4757;
    --warning: #ffa502;
    --bg-glass: rgba(255, 255, 255, 0.08);
    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.7);
    --text-muted: rgba(255, 255, 255, 0.5);
    --border-color: rgba(255, 255, 255, 0.1);
    --font-main: 'Inter', sans-serif;
    --font-display: 'Playfair Display', serif;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;
}

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

html {
    font-size: 16px;
}

body {
    font-family: var(--font-main);
    background: linear-gradient(135deg, #0d5c2e 0%, #073d1d 50%, #0a4a24 100%);
    background-attachment: fixed;
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.5;
}

body::before {
    content: '';
    position: fixed;
    inset: 0;
    background: radial-gradient(ellipse at 50% 0%, rgba(255, 255, 255, 0.05) 0%, transparent 50%);
    pointer-events: none;
}

.app-container {
    position: relative;
    z-index: 1;
    min-height: 100vh;
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem;
}

/* Header */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 1.5rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo-icon {
    font-size: 2rem;
    color: var(--gold);
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {

    0%,
    100% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.05);
    }
}

.logo h1 {
    font-family: var(--font-display);
    font-size: 1.75rem;
    background: linear-gradient(135deg, #f4d03f, #d4af37, #b8960c);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.header-controls {
    display: flex;
    gap: 0.5rem;
}

.icon-btn {
    width: 44px;
    height: 44px;
    border: none;
    border-radius: var(--radius-md);
    background: var(--bg-glass);
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.25s ease;
}

.icon-btn:hover {
    background: rgba(255, 255, 255, 0.15);
    color: var(--gold);
}

.icon-btn svg {
    width: 24px;
    height: 24px;
}

.hidden {
    display: none !important;
}

/* Stats Bar */
.stats-bar {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
    padding: 1.5rem;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.05));
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    backdrop-filter: blur(20px);
    margin-bottom: 2rem;
}

.stat-item {
    text-align: center;
}

.stat-label {
    display: block;
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    margin-bottom: 0.25rem;
}

.stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--gold);
}

/* Card Display */
.card-display-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
    padding: 3rem 0;
}

.card-display {
    perspective: 1000px;
    min-height: 280px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.card {
    width: 180px;
    height: 260px;
    border-radius: var(--radius-lg);
    background: var(--card-white);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3), inset 0 0 0 1px rgba(0, 0, 0, 0.1);
    position: relative;
    transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.card.flip-in {
    animation: flipIn 0.4s ease-out;
}

@keyframes flipIn {
    0% {
        transform: rotateY(180deg) scale(0.8);
        opacity: 0;
    }

    100% {
        transform: rotateY(0) scale(1);
        opacity: 1;
    }
}

.card-inner {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: 1rem;
}

.placeholder-card {
    background: var(--bg-glass);
    border: 2px dashed var(--border-color);
    box-shadow: none;
}

.placeholder-card .card-inner {
    justify-content: center;
    align-items: center;
}

.placeholder-text {
    color: var(--text-muted);
    font-size: 0.9rem;
    text-align: center;
}

.card-corner {
    display: flex;
    flex-direction: column;
    align-items: center;
    line-height: 1;
}

.card-corner.top {
    align-self: flex-start;
}

.card-corner.bottom {
    align-self: flex-end;
    transform: rotate(180deg);
}

.card-value {
    font-size: 1.75rem;
    font-weight: 700;
}

.card-suit {
    font-size: 1.5rem;
}

.card-center-suit {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 5rem;
    opacity: 0.9;
}

.card.red .card-value,
.card.red .card-suit,
.card.red .card-center-suit {
    color: var(--red-suit);
}

.card.black .card-value,
.card.black .card-suit,
.card.black .card-center-suit {
    color: var(--black-suit);
}

.previous-cards {
    display: flex;
    gap: 0.5rem;
    justify-content: center;
    flex-wrap: wrap;
    max-width: 400px;
}

.mini-card {
    width: 40px;
    height: 56px;
    background: var(--card-white);
    border-radius: 4px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    font-size: 0.7rem;
    font-weight: 600;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
    opacity: 0;
    animation: fadeInMini 0.3s ease forwards;
}

@keyframes fadeInMini {
    to {
        opacity: 0.8;
    }
}

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

.mini-card.black {
    color: var(--black-suit);
}

/* Progress Bar */
.progress-container {
    width: 100%;
    max-width: 600px;
    margin: 0 auto 2rem;
    height: 8px;
    background: rgba(0, 0, 0, 0.3);
    border-radius: 4px;
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    width: 0%;
    background: linear-gradient(135deg, #f4d03f, #d4af37);
    border-radius: 4px;
    transition: width 0.3s ease;
    box-shadow: 0 0 10px rgba(212, 175, 55, 0.5);
}

/* Control Panel */
.control-panel {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.05));
    border-radius: var(--radius-xl);
    border: 1px solid var(--border-color);
    backdrop-filter: blur(20px);
    padding: 2rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.control-section {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.control-title {
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-muted);
}

.speed-buttons,
.deck-buttons {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    justify-content: center;
}

.speed-btn,
.deck-btn {
    padding: 0.5rem 1.5rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: transparent;
    color: var(--text-secondary);
    font-family: var(--font-main);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.25s ease;
}

.speed-btn:hover,
.deck-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
}

.speed-btn.active,
.deck-btn.active {
    background: linear-gradient(135deg, #f4d03f, #d4af37);
    color: var(--black-suit);
    border-color: var(--gold);
    font-weight: 600;
}

.deck-btn {
    min-width: 48px;
    padding: 0.5rem 1rem;
}

.game-controls {
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
}

.primary-btn,
.secondary-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    border: none;
    border-radius: var(--radius-md);
    font-family: var(--font-main);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.25s ease;
}

.primary-btn svg,
.secondary-btn svg {
    width: 20px;
    height: 20px;
}

.start-btn {
    background: linear-gradient(135deg, #f4d03f, #d4af37);
    color: var(--black-suit);
    box-shadow: 0 4px 20px rgba(212, 175, 55, 0.3);
}

.start-btn:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 6px 30px rgba(212, 175, 55, 0.4);
}

.pause-btn {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
}

.pause-btn:hover:not(:disabled) {
    background: rgba(255, 255, 255, 0.2);
}

.restart-btn {
    background: rgba(255, 71, 87, 0.2);
    color: var(--error);
}

.restart-btn:hover:not(:disabled) {
    background: rgba(255, 71, 87, 0.3);
}

.secondary-btn {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
}

.secondary-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
}

.primary-btn:disabled,
.secondary-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.check-count-btn {
    background: linear-gradient(135deg, #00d26a, #00a854);
    color: white;
    box-shadow: 0 4px 20px rgba(0, 210, 106, 0.3);
}

.check-count-btn:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 6px 30px rgba(0, 210, 106, 0.4);
}

.keyboard-hint {
    text-align: center;
    margin-top: 1rem;
    font-size: 0.8rem;
    color: var(--text-muted);
}

.keyboard-hint kbd {
    display: inline-block;
    padding: 0.2rem 0.5rem;
    font-family: var(--font-main);
    font-size: 0.75rem;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    box-shadow: 0 2px 0 rgba(0, 0, 0, 0.2);
}