:root {
    --bg-color: #0a0003;
    --card-bg: #2b0410;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --accent-color: #3b82f6;
    --accent-hover: #2563eb;
    --success: #22c55e;
    --danger: #ef4444;
    --warning: #f59e0b;
}

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

body {
    font-family: 'Poppins', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    overflow: hidden;
    background: radial-gradient(circle at center, #4a0d24 0%, #000000 100%);
}

.app-container {
    width: 100%;
    max-width: 600px;
    padding: 2rem;
    text-align: center;
}

.main-title {
    font-size: 2.5rem;
    margin-bottom: 2rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 2px;
    background: linear-gradient(90deg, #60a5fa, #a78bfa);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
}

.screen {
    display: none;
    animation: fadeIn 0.5s ease-out forwards;
}

.screen.active {
    display: block;
}

/* Language Screen & Start Screen */
#language-screen h2,
#start-screen h2 {
    font-size: 1.8rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.lang-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
    gap: 1rem;
    margin-top: 1.5rem;
}

.lang-btn {
    padding: 0.8rem 1rem;
    font-size: 1rem;
    font-weight: 600;
    background-color: var(--card-bg);
    color: var(--text-primary);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.2), inset 0 1px 0 rgba(255, 255, 255, 0.1);
    border: 2px solid transparent;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.lang-btn:hover {
    transform: translateY(-3px);
    border-color: var(--accent-color);
    box-shadow: 0 6px 12px rgba(59, 130, 246, 0.3);
}

.lang-btn .fi {
    font-size: 1.2rem;
    border-radius: 2px;
}

#start-screen p {
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.score-buttons {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
}

.btn {
    border: none;
    outline: none;
    cursor: pointer;
    font-family: inherit;
    transition: all 0.2s ease;
    border-radius: 12px;
}

.score-btn {
    width: 80px;
    height: 80px;
    font-size: 2rem;
    font-weight: 600;
    background-color: var(--card-bg);
    color: var(--text-primary);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.2), inset 0 1px 0 rgba(255, 255, 255, 0.1);
    border: 2px solid transparent;
}

.score-btn:hover {
    transform: translateY(-5px);
    border-color: var(--accent-color);
    box-shadow: 0 8px 15px rgba(59, 130, 246, 0.3);
}

/* Game Screen */
.scoreboard {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: var(--card-bg);
    padding: 1rem 2rem;
    border-radius: 16px;
    margin-bottom: 2rem;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.score-box {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.score-box .label {
    font-size: 0.9rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 0.2rem;
}

.score-box .score {
    font-size: 2.5rem;
    font-weight: 700;
}

.user-score-box .score {
    color: var(--success);
}

.comp-score-box .score {
    color: var(--danger);
}

.max-score-box .score {
    font-size: 1.5rem;
    color: var(--warning);
}

.max-score-box .label {
    font-size: 0.8rem;
}

.arena {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 2rem;
    margin-bottom: 2rem;
    min-height: 200px;
}

.hand {
    font-size: 6rem;
    color: #e2e8f0;
    filter: drop-shadow(0 10px 8px rgba(0, 0, 0, 0.3));
    transition: color 0.3s;
}

.player-side .hand {
    color: #60a5fa;
    transform: rotate(90deg);
}

.computer-side .hand {
    color: #f87171;
    transform: rotate(-90deg) scaleY(-1);
}

.vs-text {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-secondary);
    font-style: italic;
    opacity: 0.5;
}

.round-result {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 2rem;
    min-height: 2.2rem;
    transition: color 0.3s;
}

.controls {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
}

.choice-btn {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    font-size: 2.5rem;
    background-color: var(--card-bg);
    color: var(--text-primary);
    box-shadow: 0 6px 10px rgba(0, 0, 0, 0.2), inset 0 1px 0 rgba(255, 255, 255, 0.1);
    display: flex;
    justify-content: center;
    align-items: center;
}

.choice-btn:hover {
    transform: translateY(-5px) scale(1.05);
    background-color: var(--accent-color);
    box-shadow: 0 10px 20px rgba(59, 130, 246, 0.4);
}

.choice-btn:active {
    transform: translateY(2px) scale(0.95);
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes shakePlayer {
    0% {
        transform: rotate(90deg) translateY(0);
    }

    15% {
        transform: rotate(90deg) translateY(-20px);
    }

    30% {
        transform: rotate(90deg) translateY(0);
    }

    45% {
        transform: rotate(90deg) translateY(-20px);
    }

    60% {
        transform: rotate(90deg) translateY(0);
    }

    75% {
        transform: rotate(90deg) translateY(-20px);
    }

    100% {
        transform: rotate(90deg) translateY(0);
    }
}

@keyframes shakeComputer {
    0% {
        transform: rotate(-90deg) scaleY(-1) translateY(0);
    }

    15% {
        transform: rotate(-90deg) scaleY(-1) translateY(-20px);
    }

    30% {
        transform: rotate(-90deg) scaleY(-1) translateY(0);
    }

    45% {
        transform: rotate(-90deg) scaleY(-1) translateY(-20px);
    }

    60% {
        transform: rotate(-90deg) scaleY(-1) translateY(0);
    }

    75% {
        transform: rotate(-90deg) scaleY(-1) translateY(-20px);
    }

    100% {
        transform: rotate(-90deg) scaleY(-1) translateY(0);
    }
}

.shake-player {
    animation: shakePlayer 1.5s ease-in-out;
}

.shake-computer {
    animation: shakeComputer 1.5s ease-in-out;
}

@keyframes screenShake {
    0% {
        transform: translate(2px, 2px) rotate(0deg);
    }

    10% {
        transform: translate(-4px, -6px) rotate(-2deg);
    }

    20% {
        transform: translate(-6px, 0px) rotate(2deg);
    }

    30% {
        transform: translate(8px, 4px) rotate(0deg);
    }

    40% {
        transform: translate(2px, -4px) rotate(2deg);
    }

    50% {
        transform: translate(-4px, 4px) rotate(-2deg);
    }

    60% {
        transform: translate(-8px, 2px) rotate(0deg);
    }

    70% {
        transform: translate(6px, 4px) rotate(-2deg);
    }

    80% {
        transform: translate(-2px, -4px) rotate(2deg);
    }

    90% {
        transform: translate(2px, 6px) rotate(0deg);
    }

    100% {
        transform: translate(0px, -4px) rotate(-2deg);
    }
}

.screen-shake {
    animation: screenShake 0.1s infinite;
}

@keyframes winGlow {
    0% {
        box-shadow: 0 0 10px rgba(34, 197, 94, 0);
    }

    50% {
        box-shadow: 0 0 50px rgba(34, 197, 94, 0.8), inset 0 0 30px rgba(34, 197, 94, 0.5);
    }

    100% {
        box-shadow: 0 0 10px rgba(34, 197, 94, 0);
    }
}

.win-glow {
    animation: winGlow 1s ease-in-out;
}

/* Win States */
.win-color {
    color: var(--success);
}

.lose-color {
    color: var(--danger);
}

.draw-color {
    color: var(--warning);
}

/* End Screen Overlay */
.overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.9);
    backdrop-filter: blur(5px);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 100;
}

.hidden {
    display: none !important;
}

.modal {
    background-color: var(--card-bg);
    padding: 3rem;
    border-radius: 20px;
    text-align: center;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.5), inset 0 1px 0 rgba(255, 255, 255, 0.1);
    animation: zoomIn 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

@keyframes zoomIn {
    from {
        opacity: 0;
        transform: scale(0.8);
    }

    to {
        opacity: 1;
        transform: scale(1);
    }
}

.modal h2 {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.modal p {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.primary-btn {
    background-color: var(--accent-color);
    color: white;
    padding: 1rem 2rem;
    font-size: 1.2rem;
    font-weight: 600;
    border-radius: 50px;
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.4);
    cursor: pointer;
    border: none;
    outline: none;
    transition: all 0.2s ease;
}

.primary-btn:hover {
    background-color: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(59, 130, 246, 0.6);
}

/* Responsive adjustments */
@media (max-width: 480px) {
    .hand {
        font-size: 4rem;
    }

    .choice-btn {
        width: 60px;
        height: 60px;
        font-size: 1.8rem;
    }

    .score-btn {
        width: 60px;
        height: 60px;
        font-size: 1.5rem;
    }

    .modal {
        padding: 2rem 1rem;
    }
}