@import url('https://fonts.googleapis.com/css2?family=Orbitron:wght@400;700;900&family=Outfit:wght@300;400;600&display=swap');

:root {
    --bg-color: #05050a;
    --grid-bg: #0b0c15;
    --panel-bg: rgba(15, 15, 30, 0.6);
    --panel-border: rgba(69, 243, 255, 0.15);
    --neon-cyan: #00f0f0;
    --neon-yellow: #f0f000;
    --neon-purple: #a000f0;
    --neon-green: #00f000;
    --neon-red: #f00000;
    --neon-blue: #0000f0;
    --neon-orange: #f0a000;
    --neon-magenta: #ff007f;
    --text-primary: #ffffff;
    --text-muted: #8b9bb4;
    --font-header: 'Orbitron', sans-serif;
    --font-body: 'Outfit', sans-serif;
    --glow-strength: 10px;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    user-select: none;
    -webkit-user-select: none;
}

body {
    background-color: var(--bg-color);
    background-image: 
        radial-gradient(at 0% 0%, rgba(138, 43, 226, 0.15) 0px, transparent 50%),
        radial-gradient(at 100% 100%, rgba(0, 240, 240, 0.1) 0px, transparent 50%);
    color: var(--text-primary);
    font-family: var(--font-body);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
}

/* Header */
header {
    text-align: center;
    padding: 1.5rem 1rem 0.5rem;
}

.logo {
    font-family: var(--font-header);
    font-size: 2.5rem;
    font-weight: 900;
    letter-spacing: 4px;
    background: linear-gradient(135deg, var(--neon-cyan), var(--neon-magenta));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: 0 0 20px rgba(0, 240, 240, 0.3);
    display: inline-block;
    animation: titleGlow 4s ease-in-out infinite alternate;
}

.tagline {
    font-size: 0.9rem;
    color: var(--text-muted);
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-top: 0.25rem;
}

/* Layout container */
.game-container {
    max-width: 1000px;
    width: 100%;
    margin: auto;
    padding: 1rem;
    display: flex;
    flex-direction: row;
    justify-content: center;
    align-items: flex-start;
    gap: 1.5rem;
    flex-grow: 1;
}

/* Panels */
.side-panel {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    width: 200px;
}

.panel-card {
    background: var(--panel-bg);
    border: 1px solid var(--panel-border);
    border-radius: 12px;
    padding: 1.25rem;
    backdrop-filter: blur(12px);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
    text-align: center;
    transition: all 0.3s ease;
}

.panel-card:hover {
    border-color: rgba(255, 0, 127, 0.4);
    box-shadow: 0 0 15px rgba(255, 0, 127, 0.1);
}

.panel-card h2 {
    font-family: var(--font-header);
    font-size: 0.9rem;
    color: var(--text-muted);
    letter-spacing: 1.5px;
    text-transform: uppercase;
    margin-bottom: 0.75rem;
}

.stat-value {
    font-family: var(--font-header);
    font-size: 1.8rem;
    font-weight: 700;
    color: #ffffff;
    text-shadow: 0 0 8px rgba(255, 255, 255, 0.3);
}

/* Board Wrapper */
.board-wrapper {
    position: relative;
    border-radius: 16px;
    overflow: hidden;
    background: var(--grid-bg);
    box-shadow: 0 0 30px rgba(0, 240, 240, 0.15), inset 0 0 20px rgba(0,0,0,0.8);
    border: 2px solid rgba(0, 240, 240, 0.3);
    padding: 4px;
}

.board-canvas {
    display: block;
    background-color: var(--grid-bg);
}

/* Preview Box styling */
.preview-box {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-top: 0.5rem;
}

.preview-canvas {
    background: rgba(0, 0, 0, 0.3);
    border-radius: 8px;
    border: 1px dashed rgba(255, 255, 255, 0.1);
}

/* Overlays (absolute inside board wrapper) */
.overlay-screen {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(5, 5, 10, 0.85);
    backdrop-filter: blur(8px);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 10;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
    padding: 1.5rem;
    text-align: center;
}

.overlay-screen.active {
    opacity: 1;
    pointer-events: auto;
}

.overlay-title {
    font-family: var(--font-header);
    font-size: 2.2rem;
    font-weight: 900;
    margin-bottom: 1.5rem;
    letter-spacing: 2px;
}

#start-screen .overlay-title {
    background: linear-gradient(45deg, var(--neon-cyan), #8a2be2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

#gameover-screen .overlay-title {
    background: linear-gradient(45deg, var(--neon-red), var(--neon-magenta));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.overlay-stats {
    margin-bottom: 2rem;
    font-size: 1.1rem;
    color: var(--text-muted);
}

.overlay-stats span {
    color: #fff;
    font-weight: bold;
    font-family: var(--font-header);
}

/* Buttons */
.btn-neon {
    background: transparent;
    border: 2px solid var(--neon-cyan);
    color: var(--neon-cyan);
    font-family: var(--font-header);
    font-size: 1rem;
    font-weight: 700;
    letter-spacing: 2px;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    cursor: pointer;
    text-transform: uppercase;
    transition: all 0.2s ease;
    box-shadow: 0 0 10px rgba(0, 240, 240, 0.1);
    outline: none;
}

.btn-neon:hover {
    background: var(--neon-cyan);
    color: #000;
    box-shadow: 0 0 20px rgba(0, 240, 240, 0.6);
}

.btn-neon-magenta {
    border-color: var(--neon-magenta);
    color: var(--neon-magenta);
    box-shadow: 0 0 10px rgba(255, 0, 127, 0.1);
}

.btn-neon-magenta:hover {
    background: var(--neon-magenta);
    color: #000;
    box-shadow: 0 0 20px rgba(255, 0, 127, 0.6);
}

/* Keyboard Hints / Instructions */
.instructions-panel {
    max-width: 728px;
    margin: 1.5rem auto;
    padding: 1rem;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    width: 100%;
}

.instruction-group {
    background: rgba(15, 15, 30, 0.4);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 8px;
    padding: 1rem;
}

.instruction-group h3 {
    font-family: var(--font-header);
    font-size: 0.8rem;
    letter-spacing: 1px;
    color: var(--neon-cyan);
    margin-bottom: 0.5rem;
    text-transform: uppercase;
}

.key-list {
    list-style: none;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.key-list li {
    display: flex;
    justify-content: space-between;
    padding: 0.25rem 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.03);
}

.key-list li:last-child {
    border: none;
}

.kbd {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 4px;
    padding: 1px 6px;
    font-family: monospace;
    color: #fff;
    font-size: 0.8rem;
}

/* Settings Controls */
.settings-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
    color: var(--text-muted);
}

.toggle-switch {
    position: relative;
    display: inline-block;
    width: 44px;
    height: 22px;
}

.toggle-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: #3a3b4c;
    transition: .3s;
    border-radius: 22px;
}

.slider:before {
    position: absolute;
    content: "";
    height: 16px;
    width: 16px;
    left: 3px;
    bottom: 3px;
    background-color: white;
    transition: .3s;
    border-radius: 50%;
}

input:checked + .slider {
    background-color: var(--neon-cyan);
}

input:checked + .slider:before {
    transform: translateX(22px);
}

/* Mobile Controls - Hidden on desktop */
.mobile-controls {
    display: none;
    grid-template-columns: repeat(4, 1fr);
    grid-template-rows: auto auto;
    gap: 0.5rem;
    width: 100%;
    max-width: 480px;
    margin: 1rem auto 2rem;
    padding: 0 1rem;
}

.m-btn {
    background: rgba(30, 30, 50, 0.7);
    border: 1px solid rgba(69, 243, 255, 0.3);
    border-radius: 12px;
    color: #ffffff;
    font-family: var(--font-header);
    font-weight: 700;
    font-size: 1.1rem;
    padding: 1rem 0.5rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    touch-action: manipulation;
    transition: background 0.1s, border-color 0.1s;
    box-shadow: 0 4px 6px rgba(0,0,0,0.3);
}

.m-btn:active {
    background: var(--neon-cyan);
    color: #000;
    border-color: var(--neon-cyan);
    box-shadow: 0 0 10px rgba(0, 240, 240, 0.4);
}

.m-btn .btn-icon {
    font-size: 1.4rem;
    margin-bottom: 2px;
}

.m-btn .btn-lbl {
    font-size: 0.6rem;
    letter-spacing: 0.5px;
    color: var(--text-muted);
    text-transform: uppercase;
}

.m-btn:active .btn-lbl {
    color: #000;
}

.m-span-2 {
    grid-column: span 2;
}

/* Footer */
footer {
    text-align: center;
    padding: 1.5rem;
    color: var(--text-muted);
    font-size: 0.8rem;
    border-top: 1px solid rgba(255, 255, 255, 0.03);
    margin-top: auto;
}

footer a {
    color: var(--neon-cyan);
    text-decoration: none;
}

/* Animations */
@keyframes titleGlow {
    from {
        text-shadow: 0 0 10px rgba(0, 240, 240, 0.2), 0 0 20px rgba(255, 0, 127, 0.2);
    }
    to {
        text-shadow: 0 0 20px rgba(0, 240, 240, 0.6), 0 0 35px rgba(255, 0, 127, 0.6);
    }
}

/* Screen Shake effect for line clears */
.shake {
    animation: shakeAnim 0.15s ease-in-out 2;
}

@keyframes shakeAnim {
    0% { transform: translate(0, 0); }
    25% { transform: translate(-3px, 2px); }
    50% { transform: translate(3px, -1px); }
    75% { transform: translate(-2px, -2px); }
    100% { transform: translate(0, 0); }
}

/* Responsive Rules */
@media (max-width: 768px) {
    .game-container {
        flex-direction: column;
        align-items: center;
        padding: 0.5rem;
        gap: 1rem;
    }

    .side-panel {
        width: 100%;
        flex-direction: row;
        justify-content: center;
        flex-wrap: wrap;
        gap: 0.75rem;
    }

    .panel-card {
        flex: 1;
        min-width: 120px;
        padding: 0.75rem;
    }

    .panel-card h2 {
        font-size: 0.7rem;
        margin-bottom: 0.25rem;
    }

    .stat-value {
        font-size: 1.3rem;
    }

    .preview-box {
        display: none; /* Hide hold/next previews inside vertical stats card, will scale down */
    }

    .instructions-panel {
        display: none; /* Hide instructions list on mobile to save vertical space */
    }

    .mobile-controls {
        display: grid; /* Show mobile touch pad */
    }
}

@media (max-height: 700px) and (min-width: 769px) {
    .logo {
        font-size: 1.8rem;
    }
    .game-container {
        padding: 0.25rem;
    }
    .panel-card {
        padding: 0.75rem;
    }
}


/* Embedded in the Skorven game player (iframe): hide standalone-page chrome
   so the game board fits the player frame. Direct/standalone view is unchanged. */
.embedded header,
.embedded footer,
.embedded .instructions-panel { display: none !important; }
.embedded .game-container { padding-top: 0.75rem; padding-bottom: 0.75rem; }