/* Benny's Connect Four - Based on Chess/Checkers Style */
body {
    margin: 0;
    padding: 0;
    background: linear-gradient(135deg, #ff4b1f, #ff9068);
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    overflow: hidden;
    user-select: none;
    color: white;
}

#game-container {
    width: 100vw;
    height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

#status-display {
    position: relative;
    top: auto;
    left: auto;
    transform: none;
    margin-bottom: 20px;
    background-color: transparent;
    color: white;
    padding: 0;
    font-size: 2.5rem;
    font-weight: bold;
    z-index: 2000;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.5s ease;
    text-align: center;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.8);
    height: 3rem;
    display: flex;
    justify-content: center;
    align-items: center;
}

#status-display.visible {
    opacity: 1;
}

#main-content {
    flex-grow: 1;
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding-bottom: 0;
    padding-top: 0;
}

/* Checkerboard Background Pattern Global */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-image:
        linear-gradient(45deg, rgba(255,255,255,0.1) 25%, transparent 25%),
        linear-gradient(-45deg, rgba(255,255,255,0.1) 25%, transparent 25%),
        linear-gradient(45deg, transparent 75%, rgba(255,255,255,0.1) 75%),
        linear-gradient(-45deg, transparent 75%, rgba(255,255,255,0.1) 75%);
    background-size: 60px 60px;
    background-position: 0 0, 0 30px, 30px -30px, -30px 0px;
    pointer-events: none;
    z-index: -1;
}

/* Menu Styles */
.menu-container {
    width: 100%;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    position: relative; 
}

.menu-title {
    font-family: 'Arial Black', sans-serif;
    font-size: 72px;
    color: white;
    margin-bottom: 40px;
    text-align: center;
    text-shadow: 4px 4px 8px rgba(0,0,0,0.4);
    letter-spacing: 2px;
}

@media (max-width: 600px) {
    .menu-title {
        font-size: 40px;
        letter-spacing: 1px;
    }
}

.pause-title {
    font-family: 'Arial Black', sans-serif;
    font-size: 48px;
    color: white;
    margin-bottom: 30px;
    text-align: center;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.4);
}

.menu-button {
    background: rgba(255, 255, 255, 0.9);
    color: #333;
    font-size: 32px;
    padding: 15px 40px;
    margin: 12px;
    border: none;
    border-radius: 50px;
    cursor: pointer;
    width: 80%;
    max-width: 500px;
    text-align: center;
    box-shadow: 0 4px 15px rgba(0,0,0,0.2);
    transition: all 0.2s ease;
    font-weight: bold;
    display: flex;
    justify-content: center;
    align-items: center;
}

.menu-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0,0,0,0.3);
}

.menu-button.highlight {
    transform: scale(1.05);
    box-shadow: 0 0 20px rgba(0,0,0, 0.4);
    border-style: solid;
    border-width: 4px;
    z-index: 5;
}

/* Settings Layout */
.menu-container.settings-layout,
.pause-overlay.settings-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-gap: 15px;
    padding: 20px;
    box-sizing: border-box;
    align-content: center;
    justify-items: center;
    max-width: 1200px;
}

.menu-container.settings-layout .menu-title,
.pause-overlay.settings-layout .pause-title {
    grid-column: 1 / -1;
    margin-bottom: 20px;
}

.menu-container.settings-layout .menu-button,
.pause-overlay.settings-layout .menu-button {
    width: 90%;
    font-size: 24px;
    padding: 10px 20px;
    margin: 5px;
}

.menu-container.settings-layout .menu-button:last-child {
    grid-column: 1 / -1;
    width: 60%;
}

/* Pause Overlay */
.pause-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.85);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 100;
    backdrop-filter: blur(8px);
}

.pause-button-icon {
    position: absolute;
    bottom: 20px;
    left: 20px;
    width: 60px;
    height: 60px;
    font-size: 36px;
    background: rgba(255,255,255,0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 1000;
    color: white;
    border: 3px solid white;
    box-shadow: 0 4px 10px rgba(0,0,0,0.3);
}

.pause-button-icon:hover {
    background: rgba(255,255,255,0.4);
}

/* Connect Four Board */
.game-container {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

/* Column Selector */
.column-selector {
    display: grid;
    grid-template-columns: repeat(7, minmax(0, 1fr));
    width: min(80vw, 70vh);
    margin-bottom: 10px;
    gap: 4px;
}

.column-arrow {
    width: 100%;
    height: 50px;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 40px;
    cursor: pointer;
    color: white;
    transition: all 0.2s ease;
    border-radius: 10px;
    background: rgba(255,255,255,0.1);
}

.column-arrow:hover {
    background: rgba(255,255,255,0.3);
}

.column-arrow.highlight-outline {
    box-shadow: inset 0 0 0 6px yellow, 0 0 20px yellow;
    animation: pulse-outline 1.5s infinite;
    transform: scale(1.1);
}

.column-arrow.highlight-full {
    background-color: yellow !important;
    opacity: 0.9;
    transform: scale(1.1);
    box-shadow: 0 0 20px yellow;
}

.column-arrow.disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

@keyframes pulse-outline {
    0% { opacity: 1; }
    50% { opacity: 0.6; }
    100% { opacity: 1; }
}

/* Connect Four Board Grid */
.connect-four-board {
    display: grid;
    grid-template-columns: repeat(7, minmax(0, 1fr));
    grid-template-rows: repeat(6, minmax(0, 1fr));
    width: min(80vw, 70vh);
    height: min(68.57vw, 60vh); /* 6/7 aspect ratio */
    border: 10px solid #1565c0;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
    background-color: #1976d2;
    gap: 4px;
    padding: 8px;
}

.cell {
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    box-sizing: border-box;
    background-color: #1976d2;
    border-radius: 50%;
}

.cell::before {
    content: '';
    width: 90%;
    height: 90%;
    border-radius: 50%;
    background-color: #e3f2fd;
    box-shadow: inset 0 4px 8px rgba(0,0,0,0.3);
}

.cell.highlight-outline {
    box-shadow: 0 0 0 6px yellow;
    z-index: 2;
    animation: pulse-outline 1.5s infinite;
}

.cell.highlight-full::before {
    background-color: yellow !important;
    opacity: 0.8;
}

/* Game Pieces */
.piece {
    position: absolute;
    width: 85%;
    height: 85%;
    border-radius: 50%;
    box-shadow: 0 4px 8px rgba(0,0,0,0.4), inset 0 -3px 6px rgba(0,0,0,0.2), inset 0 3px 6px rgba(255,255,255,0.3);
    transition: transform 0.3s ease;
}

.piece.dropping {
    animation: dropPiece 0.5s ease-out;
}

@keyframes dropPiece {
    0% {
        transform: translateY(-500%);
    }
    70% {
        transform: translateY(5%);
    }
    85% {
        transform: translateY(-3%);
    }
    100% {
        transform: translateY(0);
    }
}

.piece.winning {
    animation: winPulse 0.5s ease-in-out infinite alternate;
}

@keyframes winPulse {
    0% {
        transform: scale(1);
        box-shadow: 0 4px 8px rgba(0,0,0,0.4), inset 0 -3px 6px rgba(0,0,0,0.2), inset 0 3px 6px rgba(255,255,255,0.3);
    }
    100% {
        transform: scale(1.1);
        box-shadow: 0 0 20px gold, 0 4px 8px rgba(0,0,0,0.4);
    }
}

/* Preview piece showing where the drop will land */
.piece.preview {
    opacity: 0.5;
    animation: previewPulse 1s ease-in-out infinite;
    box-shadow: 0 0 15px currentColor, 0 4px 8px rgba(0,0,0,0.4);
}

@keyframes previewPulse {
    0% {
        opacity: 0.3;
        transform: scale(0.9);
    }
    50% {
        opacity: 0.7;
        transform: scale(1);
    }
    100% {
        opacity: 0.3;
        transform: scale(0.9);
    }
}

/* Highlight the target cell */
.cell.preview-target::before {
    animation: targetGlow 1s ease-in-out infinite;
}

@keyframes targetGlow {
    0% {
        box-shadow: inset 0 4px 8px rgba(0,0,0,0.3), 0 0 10px rgba(255,255,0,0.5);
    }
    50% {
        box-shadow: inset 0 4px 8px rgba(0,0,0,0.3), 0 0 25px rgba(255,255,0,0.8);
    }
    100% {
        box-shadow: inset 0 4px 8px rgba(0,0,0,0.3), 0 0 10px rgba(255,255,0,0.5);
    }
}

/* Settings Color Swatches */
.color-swatch-circle {
    display: inline-block;
    width: 24px;
    height: 24px;
    margin-left: 10px;
    border: 2px solid #555;
    border-radius: 50%;
    vertical-align: middle;
    box-shadow: 0 2px 4px rgba(0,0,0,0.3);
}

/* Turn Indicator */
.turn-indicator {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 15px;
    font-size: 24px;
    font-weight: bold;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
}

.turn-indicator .preview-piece {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    margin-left: 15px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.4);
}