/* Root Variables */
:root {
    --bg: #000045;
    --text: #eeeeee;
    --accent: #ff7500;
    --accent-2: #ffa200;
    --accent-muted: #c27b00;

    --light: #eeeeee;
    --dark: #222222;
}

/* Base Styles */
html,
body {
    background-image: linear-gradient(0, var(--bg) 0%, #000078 100%);
    min-height: 100vh;
    overflow: hidden;
    color: var(--text);
}

body {
    display: flex;
    justify-content: center;
    padding-top: 40px;
    font-family: 'Franklin Gothic Medium', 'Arial Narrow', Arial, sans-serif;
}

/* Animation */
@keyframes fadeInFromBottom {
    from {
        opacity: 0;
        transform: scale(0.98) translateY(15px);
    }

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

/* Layout */
#game-wrap {
    display: grid;
    grid-template-columns: 220px auto 220px;
    gap: 20px;
    align-items: start;
}

#board {
    display: grid;
    grid-template-columns: repeat(8, 80px);
    grid-template-rows: repeat(8, 80px);
    border: 4px solid var(--accent);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.6);
    animation: fadeInFromBottom 0.4s ease;
}

/* Board Squares */
.square {
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 48px;
    cursor: pointer;
    transition: transform 0.08s ease;
}

.light {
    background: linear-gradient(145deg, var(--light), #cfcfcf);
}

.dark {
    background: linear-gradient(145deg, var(--dark), #181818);
}

.square:hover {
    outline: 2px solid var(--accent-2);
    filter: brightness(1.1);
}

.square:active {
    transform: scale(0.96);
}

.square.selected {
    outline: 4px solid var(--accent);
    box-shadow: 0 0 12px var(--accent);
}

/* Pieces */
.piece-canvas {
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.captured-piece {
    width: 28px;
    height: 28px;
    margin: 2px;
}

.captured-container {
    background: rgba(255, 255, 255, 0.05);
    padding: 6px;
    border-radius: 6px;
    min-height: 40px;
    display: flex;
    flex-wrap: wrap;
    gap: 2px;
}

#ghost {
    position: fixed;
    pointer-events: none;
    z-index: 9999;
    display: none;
    width: 80px;
    height: 80px;
    transform: translate(-50%, -50%);
}

/* Global Panels */
.panel {
    background: var(--bg);
    border: 3px solid var(--accent);
    border-radius: 12px;
    padding: 12px;
    min-height: 640px;
    box-shadow: 0 6px 18px rgba(0, 0, 0, 0.5);
    animation: fadeInFromBottom 0.6s ease;
}

.panel h3,
.panel h4 {
    margin-top: 5px;
    margin-bottom: 5px;
    color: var(--accent-2);
}

.panel button {
    border-radius: 8px;
    font-weight: bold;
    transition: all 0.2s ease;
}

.panel button:hover {
    transform: translateY(-2px);
    background-color: var(--accent-2);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.4);
}

.panel button:active {
    transform: translateY(1px);
}

/* Game Info Panel */
#moveHistory {
    max-height: 200px;
    overflow-y: auto;
    font-size: 14px;
}

#moveHistory div {
    margin-bottom: 5px;
}

/* Game Settings Panel */
.mode-active {
    background: var(--accent-2) !important;
    box-shadow: 0 0 10px var(--accent);
}

/* Global Modals */
.modal {
    position: fixed;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(6px);
    background: rgba(0, 0, 40, 0.6);
    opacity: 1;
    pointer-events: auto;
    transition: opacity 0.25s ease;
}

.modal.hidden {
    opacity: 0;
    pointer-events: none;
}

.modal>* {
    transform: scale(1) translateY(0);
    transition: all 0.25s ease;
}

.modal.hidden>* {
    transform: scale(0.9) translateY(20px);
    opacity: 0;
}

/* Promotion Modal */
#promotionModal {
    background: rgba(0, 0, 30, 0.7);
    z-index: 100;
}

#promotionMenu {
    background: linear-gradient(145deg, #000045, #000070);
    border: 3px solid var(--accent);
    border-radius: 14px;
    padding: 18px;
    display: flex;
    gap: 14px;
    box-shadow:
        0 0 20px rgba(255, 117, 0, 0.4),
        0 8px 25px rgba(0, 0, 0, 0.6);
}

#promotionMenu canvas {
    width: 70px;
    height: 70px;
    background: linear-gradient(145deg, #bbbbbb, #999999);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.15s ease;
}

#promotionMenu canvas:hover {
    transform: scale(1.1);
    box-shadow: 0 0 10px var(--accent);
}

/* Game Over Modal */
#gameOverModal {
    background: rgba(0, 0, 40, 0.75);
    z-index: 200;
}

#gameOverMenu {
    background: linear-gradient(145deg, #000045, #000070);
    border: 3px solid var(--accent);
    border-radius: 16px;
    padding: 28px;
    text-align: center;
    min-width: 280px;
    box-shadow:
        0 0 25px rgba(255, 117, 0, 0.5),
        0 10px 30px rgba(0, 0, 0, 0.7);
}

#gameOverMenu h2 {
    margin-top: 0;
    color: var(--accent-2);
    text-shadow: 0 0 10px rgba(255, 162, 0, 0.7);
    font-size: 24px;
}

/* Buttons */
.gameOverButtons {
    margin-top: 16px;
    display: flex;
    gap: 12px;
    justify-content: center;
}

.gameOverButtons button {
    border-radius: 8px;
    font-weight: bold;
    padding: 8px 14px;
    font-size: 16px;
    background: var(--accent);
    border: none;
    cursor: pointer;
    transition: all 0.2s ease;
}

.gameOverButtons button:hover {
    transform: translateY(-2px);
    background-color: var(--accent-2);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.4);
}

.gameOverButtons button:active {
    transform: translateY(1px);
}

/* Turn Indicator */
#turnIndicator {
    font-size: 18px;
    font-weight: bold;
    margin-bottom: 10px;
    padding: 6px;
    border-radius: 6px;
    background: rgba(255, 255, 255, 0.08);
}

/* Scrollbar */
#moveHistory::-webkit-scrollbar {
    width: 6px;
}

#moveHistory::-webkit-scrollbar-thumb {
    background: var(--accent);
    border-radius: 4px;
}