/* ==========================================
   ARCADE STYLE ROCK PAPER SCISSORS
   Design System & Global Styles
   ========================================== */

:root {
    /* Colors */
    --bg-dark: #0a0a0a;
    --bg-darker: #000000;
    --neon-green: #00ff41;
    --neon-pink: #ff00ff;
    --neon-cyan: #00ffff;
    --neon-yellow: #ffff00;
    --text-white: #ffffff;
    --text-gray: #cccccc;
    --glass-bg: rgba(0, 0, 0, 0.85);
    --glass-border: rgba(0, 255, 65, 0.5);

    /* Fonts */
    --font-title: 'Press Start 2P', cursive;
    --font-body: 'VT323', monospace;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
}

/* ==========================================
   RESET & BASE STYLES
   ========================================== */

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

body {
    font-family: var(--font-body);
    background: var(--bg-darker);
    color: var(--text-white);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow-x: hidden;
    font-size: 1.5rem;
    position: relative;

    /* Retro grid background */
    background-image:
        linear-gradient(rgba(0, 255, 65, 0.03) 2px, transparent 2px),
        linear-gradient(90deg, rgba(0, 255, 65, 0.03) 2px, transparent 2px);
    background-size: 30px 30px;
    background-position: center center;
}

/* CRT Scanlines Effect */
.scanlines {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 9999;
    background: repeating-linear-gradient(0deg,
            rgba(0, 0, 0, 0.15),
            rgba(0, 0, 0, 0.15) 1px,
            transparent 1px,
            transparent 2px);
    animation: scanline-flicker 0.1s infinite;
}

@keyframes scanline-flicker {
    0% {
        opacity: 0.8;
    }

    50% {
        opacity: 0.85;
    }

    100% {
        opacity: 0.8;
    }
}

/* ==========================================
   LAYOUT
   ========================================== */

.container {
    width: 100%;
    max-width: 1000px;
    padding: var(--spacing-lg);
    text-align: center;
    position: relative;
    z-index: 1;
}

/* ==========================================
   TYPOGRAPHY
   ========================================== */

.title {
    font-family: var(--font-title);
    margin-bottom: var(--spacing-xl);
    line-height: 1.4;
    text-transform: uppercase;
}

.title-main {
    display: block;
    font-size: clamp(2.5rem, 8vw, 5rem);
    color: var(--neon-green);
    text-shadow:
        0 0 10px var(--neon-green),
        0 0 20px var(--neon-green),
        0 0 30px var(--neon-green),
        4px 4px 0px rgba(0, 100, 0, 0.8);
    animation: title-glow 2s ease-in-out infinite;
    letter-spacing: 0.1em;
}

.title-sub {
    display: block;
    font-size: clamp(1rem, 3vw, 1.5rem);
    color: var(--neon-pink);
    text-shadow:
        0 0 10px var(--neon-pink),
        0 0 20px var(--neon-pink);
    margin-top: var(--spacing-sm);
    letter-spacing: 0.3em;
}

@keyframes title-glow {

    0%,
    100% {
        text-shadow:
            0 0 10px var(--neon-green),
            0 0 20px var(--neon-green),
            0 0 30px var(--neon-green),
            4px 4px 0px rgba(0, 100, 0, 0.8);
    }

    50% {
        text-shadow:
            0 0 20px var(--neon-green),
            0 0 30px var(--neon-green),
            0 0 40px var(--neon-green),
            4px 4px 0px rgba(0, 100, 0, 0.8);
    }
}

.screen-title {
    font-family: var(--font-title);
    font-size: clamp(1rem, 3vw, 1.5rem);
    color: var(--neon-cyan);
    margin-bottom: var(--spacing-lg);
    text-shadow: 0 0 10px var(--neon-cyan);
    letter-spacing: 0.1em;
}

/* ==========================================
   GLASS PANEL
   ========================================== */

.glass-panel {
    background: var(--glass-bg);
    border: 4px solid var(--neon-green);
    box-shadow:
        0 0 20px rgba(0, 255, 65, 0.3),
        inset 0 0 30px rgba(0, 255, 65, 0.1);
    padding: var(--spacing-xl);
    position: relative;
    backdrop-filter: blur(10px);
}

.glass-panel::before {
    content: '';
    position: absolute;
    top: 8px;
    left: 8px;
    right: 8px;
    bottom: 8px;
    border: 2px solid rgba(0, 255, 65, 0.2);
    pointer-events: none;
}

/* ==========================================
   BUTTONS
   ========================================== */

button {
    font-family: var(--font-title);
    font-size: clamp(0.6rem, 2vw, 0.9rem);
    text-transform: uppercase;
    cursor: pointer;
    border: none;
    outline: none;
    letter-spacing: 0.1em;
    transition: all var(--transition-fast);
}

.btn-primary {
    background: var(--neon-green);
    color: var(--bg-darker);
    padding: 1rem 2rem;
    border: 4px solid #00aa00;
    box-shadow:
        0 0 10px var(--neon-green),
        6px 6px 0px rgba(0, 100, 0, 0.8);
    position: relative;
}

.btn-primary:hover {
    transform: translate(3px, 3px);
    box-shadow:
        0 0 15px var(--neon-green),
        3px 3px 0px rgba(0, 100, 0, 0.8);
}

.btn-primary:active {
    transform: translate(6px, 6px);
    box-shadow:
        0 0 20px var(--neon-green),
        0px 0px 0px rgba(0, 100, 0, 0.8);
}

.btn-secondary {
    background: transparent;
    color: var(--neon-pink);
    padding: 1rem 2rem;
    border: 4px solid var(--neon-pink);
    box-shadow:
        0 0 10px rgba(255, 0, 255, 0.5),
        6px 6px 0px rgba(100, 0, 100, 0.6);
}

.btn-secondary:hover {
    background: var(--neon-pink);
    color: var(--bg-darker);
    transform: translate(3px, 3px);
    box-shadow:
        0 0 15px var(--neon-pink),
        3px 3px 0px rgba(100, 0, 100, 0.6);
}

.btn-secondary:active {
    transform: translate(6px, 6px);
    box-shadow:
        0 0 20px var(--neon-pink),
        0px 0px 0px rgba(100, 0, 100, 0.6);
}

.btn-copy {
    background: transparent;
    color: var(--neon-cyan);
    padding: 0.8rem 1.5rem;
    border: 3px solid var(--neon-cyan);
    font-size: 0.7rem;
    margin-top: var(--spacing-sm);
    box-shadow: 0 0 10px rgba(0, 255, 255, 0.3);
}

.btn-copy:hover {
    background: var(--neon-cyan);
    color: var(--bg-darker);
    box-shadow: 0 0 20px var(--neon-cyan);
}

.btn-leave {
    margin-top: var(--spacing-lg);
}

/* ==========================================
   INPUTS
   ========================================== */

.input-group {
    margin-bottom: var(--spacing-lg);
}

.input-group label {
    display: block;
    font-family: var(--font-title);
    font-size: 0.8rem;
    color: var(--neon-green);
    margin-bottom: var(--spacing-sm);
    letter-spacing: 0.1em;
}

input[type="text"] {
    width: 100%;
    max-width: 400px;
    padding: 1rem;
    font-family: var(--font-body);
    font-size: 1.8rem;
    text-align: center;
    background: var(--bg-darker);
    border: 4px solid var(--text-gray);
    color: var(--neon-green);
    text-transform: uppercase;
    letter-spacing: 0.2em;
    transition: all var(--transition-normal);
}

input[type="text"]:focus {
    outline: none;
    border-color: var(--neon-green);
    box-shadow:
        0 0 20px rgba(0, 255, 65, 0.5),
        inset 0 0 10px rgba(0, 255, 65, 0.1);
}

input[type="text"]::placeholder {
    color: rgba(204, 204, 204, 0.3);
}

/* ==========================================
   BUTTON GROUPS
   ========================================== */

.button-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    align-items: stretch;
    margin-top: var(--spacing-lg);
    width: 100%;
}

.button-group button {
    width: 100%;
    max-width: 400px;
    margin: 0 auto;
}

/* Join Input Section */
#join-input {
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-lg);
    border-top: 2px solid rgba(0, 255, 65, 0.2);
}

#join-input button {
    width: 100%;
    max-width: 400px;
    margin-top: var(--spacing-md);
}

/* ==========================================
   SCREENS
   ========================================== */

.screen {
    display: none;
}

.screen.active {
    display: block;
    animation: screen-fade-in 0.5s ease;
}

@keyframes screen-fade-in {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

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

/* ==========================================
   LOBBY SCREEN
   ========================================== */

.room-code-display {
    margin: var(--spacing-xl) 0;
}

.room-code-display .label {
    font-family: var(--font-title);
    font-size: 0.8rem;
    color: var(--text-gray);
    margin-bottom: var(--spacing-sm);
    letter-spacing: 0.1em;
}

.code-box {
    font-family: var(--font-title);
    font-size: clamp(1.5rem, 5vw, 3rem);
    color: var(--neon-yellow);
    background: rgba(255, 255, 0, 0.1);
    border: 4px solid var(--neon-yellow);
    padding: var(--spacing-lg);
    letter-spacing: 0.3em;
    text-shadow: 0 0 10px var(--neon-yellow);
    box-shadow:
        0 0 20px rgba(255, 255, 0, 0.3),
        inset 0 0 20px rgba(255, 255, 0, 0.1);
    user-select: all;
    cursor: pointer;
}

.loader-container {
    margin: var(--spacing-xl) 0;
}

.loader {
    width: 60px;
    height: 60px;
    border: 6px solid rgba(0, 255, 65, 0.2);
    border-top: 6px solid var(--neon-green);
    border-radius: 50%;
    margin: 0 auto var(--spacing-md);
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(360deg);
    }
}

.status-text {
    font-family: var(--font-body);
    font-size: 1.5rem;
    color: var(--text-gray);
    animation: pulse 1.5s ease-in-out infinite;
}

@keyframes pulse {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.5;
    }
}

/* ==========================================
   GAME SCREEN
   ========================================== */

.score-board {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 800px;
    margin: 0 auto var(--spacing-xl);
    padding: var(--spacing-lg);
}

.player-score {
    text-align: center;
    flex: 1;
}

.player-name {
    font-family: var(--font-body);
    font-size: 1.5rem;
    color: var(--neon-pink);
    text-transform: uppercase;
    letter-spacing: 0.15em;
    margin-bottom: var(--spacing-sm);
}

.score-value {
    font-family: var(--font-title);
    font-size: clamp(2rem, 5vw, 3rem);
    color: var(--neon-green);
    text-shadow:
        0 0 10px var(--neon-green),
        3px 3px 0px rgba(0, 100, 0, 0.8);
}

.vs-badge {
    font-family: var(--font-title);
    font-size: clamp(1.5rem, 4vw, 2.5rem);
    color: var(--neon-pink);
    margin: 0 var(--spacing-lg);
    text-shadow: 0 0 10px var(--neon-pink);
    animation: blink 1.5s infinite;
}

@keyframes blink {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.3;
    }
}

/* ==========================================
   GAME AREA
   ========================================== */

.game-area {
    min-height: 400px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.choice-section {
    padding: var(--spacing-lg) 0;
}

.game-prompt {
    font-family: var(--font-title);
    font-size: clamp(1rem, 3vw, 1.5rem);
    color: var(--text-white);
    margin-bottom: var(--spacing-md);
    letter-spacing: 0.1em;
}

.opponent-status {
    font-family: var(--font-body);
    font-size: 1.5rem;
    color: var(--neon-cyan);
    margin-bottom: var(--spacing-md);
    animation: pulse 1s infinite;
}

.choice-container {
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
    flex-wrap: wrap;
}

.choice-card {
    width: 160px;
    height: 200px;
    background: var(--bg-darker);
    border: 4px solid var(--text-gray);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-fast);
    position: relative;
}

.choice-card:hover {
    transform: translateY(-8px);
    border-color: var(--neon-green);
    box-shadow:
        0 0 20px rgba(0, 255, 65, 0.5),
        0 8px 0px rgba(0, 100, 0, 0.8);
}

.choice-card:active {
    transform: translateY(-4px);
    box-shadow:
        0 0 25px var(--neon-green),
        0 4px 0px rgba(0, 100, 0, 0.8);
}

.choice-card.selected {
    border-color: var(--neon-green);
    background: rgba(0, 255, 65, 0.1);
    box-shadow: 0 0 30px rgba(0, 255, 65, 0.6);
}

.choice-card.locked {
    animation: card-pulse 1s ease-in-out infinite;
}

@keyframes card-pulse {

    0%,
    100% {
        box-shadow: 0 0 20px rgba(0, 255, 65, 0.6);
    }

    50% {
        box-shadow: 0 0 40px rgba(0, 255, 65, 0.8);
    }
}

.choice-card.opponent {
    border-color: var(--neon-pink);
    background: rgba(255, 0, 255, 0.1);
    box-shadow: 0 0 30px rgba(255, 0, 255, 0.6);
}

.choice-icon {
    font-size: 4rem;
    margin-bottom: var(--spacing-sm);
    filter: drop-shadow(0 0 10px rgba(255, 255, 255, 0.3));
}

.choice-label {
    font-family: var(--font-title);
    font-size: 0.7rem;
    color: var(--text-white);
    letter-spacing: 0.1em;
}

/* ==========================================
   WAITING & RESULT SECTIONS
   ========================================== */

.selected-choice {
    display: flex;
    justify-content: center;
    margin: var(--spacing-xl) 0;
}

.result-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.95);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    animation: overlay-fade-in 0.3s ease;
}

@keyframes overlay-fade-in {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

.result-content {
    max-width: 600px;
    padding: var(--spacing-xl);
}

.result-title {
    font-family: var(--font-title);
    font-size: clamp(2rem, 6vw, 4rem);
    margin-bottom: var(--spacing-xl);
    letter-spacing: 0.1em;
    animation: result-bounce 0.5s ease;
}

@keyframes result-bounce {
    0% {
        transform: scale(0.5);
        opacity: 0;
    }

    50% {
        transform: scale(1.1);
    }

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

.result-title.win {
    color: var(--neon-green);
    text-shadow: 0 0 20px var(--neon-green);
}

.result-title.lose {
    color: var(--neon-pink);
    text-shadow: 0 0 20px var(--neon-pink);
}

.result-title.draw {
    color: var(--neon-yellow);
    text-shadow: 0 0 20px var(--neon-yellow);
}

.result-choices {
    display: flex;
    justify-content: center;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.result-player {
    text-align: center;
}

.result-label {
    font-family: var(--font-title);
    font-size: 0.8rem;
    color: var(--text-gray);
    margin-bottom: var(--spacing-sm);
    letter-spacing: 0.1em;
}

.next-round-text {
    font-family: var(--font-body);
    font-size: 1.5rem;
    color: var(--text-gray);
}

#countdown {
    color: var(--neon-cyan);
    font-size: 2rem;
    text-shadow: 0 0 10px var(--neon-cyan);
}

/* ==========================================
   UTILITY CLASSES
   ========================================== */

.hidden {
    display: none !important;
}

.error-message {
    font-family: var(--font-body);
    font-size: 1.3rem;
    color: #ff3333;
    background: rgba(255, 51, 51, 0.1);
    border: 2px solid #ff3333;
    padding: var(--spacing-sm);
    margin-top: var(--spacing-md);
    text-shadow: 0 0 10px #ff3333;
}

/* ==========================================
   RESPONSIVE DESIGN
   ========================================== */

@media (max-width: 768px) {
    .container {
        padding: var(--spacing-sm);
    }

    .glass-panel {
        padding: var(--spacing-lg);
    }

    .choice-container {
        gap: var(--spacing-sm);
    }

    .choice-card {
        width: 120px;
        height: 160px;
    }

    .choice-icon {
        font-size: 3rem;
    }

    .choice-label {
        font-size: 0.6rem;
    }

    .score-board {
        flex-direction: column;
        gap: var(--spacing-md);
    }

    .vs-badge {
        margin: var(--spacing-sm) 0;
    }

    .result-choices {
        flex-direction: column;
        gap: var(--spacing-md);
    }

    button {
        font-size: 0.7rem;
        padding: 0.8rem 1.5rem;
    }

    input[type="text"] {
        font-size: 1.5rem;
        padding: 0.8rem;
    }
}

@media (max-width: 480px) {
    .title-main {
        font-size: 2rem;
    }

    .choice-card {
        width: 100px;
        height: 140px;
    }

    .choice-icon {
        font-size: 2.5rem;
    }

    input[type="text"] {
        font-size: 1.3rem;
    }

    .glass-panel {
        padding: var(--spacing-md);
    }
}