:root {
    --bg-color: #121212;
    --card-bg: #1e1e1e;
    --text-color: #e0e0e0;
    --accent-orange: #FFA500;
    --accent-pink: #FF69B4;
    --border-color: #333;
    --button-hover: #333;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}

#app {
    width: 100%;
    max-width: 800px;
    padding: 20px;
    text-align: center;
}

header h1 {
    color: var(--accent-orange);
    margin-bottom: 30px;
    font-size: 2.5rem;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.view {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
}

.view.hidden, .hidden {
    display: none;
}

.card {
    background-color: var(--card-bg);
    padding: 30px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    box-shadow: 0 4px 20px rgba(0,0,0,0.5);
    width: 100%;
    max-width: 400px;
}

h2 {
    color: var(--accent-pink);
    margin-bottom: 20px;
}

button {
    background-color: transparent;
    color: var(--accent-orange);
    border: 2px solid var(--accent-orange);
    padding: 12px 24px;
    font-size: 1rem;
    font-weight: bold;
    cursor: pointer;
    border-radius: 6px;
    transition: all 0.3s ease;
    width: 100%;
    margin: 10px 0;
}

button:hover:not(:disabled) {
    background-color: var(--accent-orange);
    color: var(--bg-color);
}

button:disabled {
    border-color: #555;
    color: #555;
    cursor: not-allowed;
}

button#start-game-btn {
    border-color: var(--accent-pink);
    color: var(--accent-pink);
    margin-top: 20px;
}

button#start-game-btn:hover:not(:disabled) {
    background-color: var(--accent-pink);
    color: var(--bg-color);
}

.divider {
    margin: 15px 0;
    color: #555;
    font-size: 0.9rem;
    position: relative;
}

.join-container {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

input[type="text"] {
    background-color: #2a2a2a;
    border: 1px solid var(--border-color);
    color: var(--text-color);
    padding: 12px;
    border-radius: 6px;
    text-align: center;
    font-size: 1.2rem;
    letter-spacing: 4px;
    text-transform: uppercase;
}

input[type="text"]:focus {
    outline: none;
    border-color: var(--accent-pink);
}

.control-group {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

select {
    background-color: #2a2a2a;
    color: var(--text-color);
    border: 1px solid var(--border-color);
    padding: 8px;
    border-radius: 4px;
}

#game-id-display {
    font-size: 1.1rem;
    margin-bottom: 20px;
}

#game-id-value {
    color: var(--accent-orange);
    font-weight: bold;
    font-family: monospace;
    font-size: 1.4rem;
}

/* Game Board Styles (Placeholder) */
#board-container {
    margin-top: 10px;
    position: relative;
    width: min(90vw, calc(80vh * 8 / 12));
    aspect-ratio: 8 / 12;
    margin: 0 auto;
}

#arrow-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 20;
}

#rule-notification {
    background-color: var(--accent-pink);
    color: var(--bg-color);
    padding: 5px 10px;
    border-radius: 4px;
    font-size: 0.9rem;
    margin-bottom: 5px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

#game-info {
    display: flex;
    flex-direction: column;
    width: 100%;
    margin-bottom: 10px;
    color: var(--accent-orange);
    font-weight: bold;
    gap: 5px;
}

#game-controls {
    display: flex;
    gap: 10px;
    width: 100%;
    max-width: 400px;
    margin-bottom: 10px;
}

#game-controls button {
    flex: 1;
    margin: 0;
    font-size: 0.9rem;
    padding: 8px 16px;
    border-color: #555;
    color: #888;
}

#game-controls button:hover:not(:disabled) {
    border-color: var(--accent-orange);
    color: var(--accent-orange);
    background-color: transparent;
}

#game-controls button#resign-btn:hover:not(:disabled) {
    border-color: var(--accent-pink);
    color: var(--accent-pink);
}

#game-controls button#rematch-btn {
    border-color: var(--accent-pink);
    color: var(--accent-pink);
}

#game-controls button#rematch-btn:hover:not(:disabled) {
    background-color: var(--accent-pink);
    color: var(--bg-color);
}

.info-row {
    display: flex;
    justify-content: space-between;
    width: 100%;
}

#status-message {
    color: var(--accent-pink);
}

#board {
    display: grid;
    grid-template-columns: repeat(8, 12.5%);
    grid-template-rows: repeat(12, 8.333%);
    width: 100%;
    height: 100%;
    border: 2px solid var(--border-color);
    background-color: #000;
    position: relative;
}

.square {
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: min(4vw, 3vh);
    cursor: pointer;
    position: relative;
    user-select: none;
    -webkit-user-select: none;
    -webkit-touch-callout: none;
}

.square.light {
    background-color: #3a3a3a;
}

.square.dark {
    background-color: #1b1b1b;
}

.square.dug {
    background-color: #444;
}

.square.dug.light { background-color: #634738; }
.square.dug.dark { background-color: #101010; }

.square.selected {
    outline: 3px solid var(--accent-orange);
    z-index: 10;
}

.square.highlight::after {
    content: '';
    width: 15px;
    height: 15px;
    background-color: rgba(255, 165, 0, 0.3);
    border-radius: 50%;
}

.square.bomb {
    background-color: #800 !important;
}

.square .count {
    font-size: min(2.5vw, 2vh);
    font-weight: bold;
    color: var(--accent-orange);
}

.piece {
    transition: transform 0.2s ease;
    z-index: 5;
    font-size: min(7vw, 5vh);
}

.piece.w { color: #ffffff; }
.piece.b { color: #000000; }
/*.piece.b { color: #39a18f; }*/

.flagged::before {
    content: '🚩';
    font-size: min(4vw, 3vh);
    position: absolute;
}