@font-face {
    font-family: 'GT America Mono Thin';
    src: url('font/gt-america-mono-thin.woff2') format('woff2'),
         url('font/gt-america-mono-thin.woff') format('woff');
    font-weight: normal;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'GT America Mono Light';
    src: url('font/gt-america-mono-light.woff2') format('woff2'),
         url('font/gt-america-mono-light.woff') format('woff');
    font-weight: normal;
    font-style: normal;
    font-display: swap;
}

:root {
    --accent-color: #BB5CFF;
    --accent-color-hover: #333333;
    --accent-color-active: #999;
    --bg-color: #F5F3F0;
    --text-color: #000000;
    --text-color-secondary: #666666;
    --border-color: #cccccc;
    --control-bg: color-mix(in srgb, var(--bg-color) 90%, transparent);
    --hover-text-color: #F5F3F0; /* Always light for hover text */
}

/* Dark mode variables */
:root.dark-mode {
    --bg-color: #000000;
    --text-color: #F5F3F0;
    --text-color-secondary: #aaaaaa;
    --border-color: #444444;
    --control-bg: color-mix(in srgb, var(--bg-color) 90%, transparent);
}

/* Dark Mode Toggle */
.dark-mode-toggle {
    position: fixed;
    top: calc(20px + env(safe-area-inset-top));
    right: calc(20px + env(safe-area-inset-right));
    z-index: 1100;
    cursor: pointer;
    user-select: none;
}

.toggle-track {
    width: 64px;
    height: 32px;
    background: var(--text-color-secondary);
    border-radius: 16px;
    position: relative;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 2px 6px 8px rgba(0, 0, 0, 0.3);
}

.toggle-thumb {
    width: 28px;
    height: 28px;
    background: var(--bg-color);
    border-radius: 50%;
    position: absolute;
    top: 50%;
    left: 2px;
    transform: translateY(-50%);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    color: var(--text-color);
}

.icon {
    position: absolute;
    font-size: 16px;
    transition: opacity 0.2s ease, transform 0.2s ease, color 0.2s ease;
    opacity: 0;
    transform: scale(0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    color: inherit;
}

.sun-icon {
    opacity: 1;
    transform: scale(1);
}

.moon-icon {
    opacity: 0;
    transform: scale(0.8);
}

/* Dark mode active state */
:root.dark-mode .toggle-track {
    background: var(--accent-color);
}

:root.dark-mode .toggle-thumb {
    left: 34px;
}

:root.dark-mode .sun-icon {
    opacity: 0;
    transform: scale(0.8);
}

:root.dark-mode .moon-icon {
    opacity: 1;
    transform: scale(1);
}

/* Hover effects */
.dark-mode-toggle:hover .toggle-track {
    box-shadow: 0 0 8px rgba(187, 92, 255, 0.3);
}

.dark-mode-toggle:hover .toggle-thumb {
    transform: translateY(-50%) scale(1.1);
}

.dark-mode-toggle:active .toggle-thumb {
    transform: translateY(-50%) scale(0.95);
    transition: all 0.1s ease;
}

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

body {
    background: var(--bg-color);
    color: var(--text-color);
    font-family: 'GT America Mono Thin', 'SF Mono', 'Monaco', 'Consolas', 'Liberation Mono', 'Courier New', monospace;
    overflow: hidden;
    transition: background-color 0.3s ease, color 0.3s ease;
}

#controlsContainer {
    position: fixed;
    top: 50%;
    left: calc(20px + env(safe-area-inset-left));
    transform: translateY(-50%);
    z-index: 1000;
    display: flex;
    align-items: flex-start;
    transition: transform 0.2s ease-in-out;
}

#controlsContainer.collapsed {
    transform: translateY(-50%) translateX(-220px); /* Hide completely: 200px width + 20px initial left position */
}

#controls {
    background: var(--control-bg);
    padding: 15px;
    border-radius: 4px;
    font-size: 12px;
    line-height: 1.4;
    width: 200px;
    border: 1px solid var(--border-color);
    transition: background-color 0.3s ease, border-color 0.3s ease;
    max-height: 90dvh;
    overflow-y: auto;
}

.controls-toggle {
    background: var(--accent-color);
    border: none;
    padding: 18px 12px;
    border-radius: 0;
    cursor: pointer;
    transition: all 0.3s ease-in-out;
    font-size: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--bg-color);
    align-self: center;
    min-height: 90px;
    min-width: 42px;
}

.controls-toggle:hover {
    background: var(--accent-color-hover);
}

.controls-toggle:active {
    background: var(--accent-color-active);
}

.controls-toggle .arrow {
    transition: transform 0.2s ease-in-out, top 0.2s ease-in-out;
    position: relative;
    top: 24px; /* Position at bottom when expanded (pointing left) */
}

#controlsContainer.collapsed .controls-toggle .arrow {
    transform: rotate(180deg);
    top: -24px; /* Position at top when collapsed (pointing right) */
}

/* Coming Soon Section */
#comingSoonSection {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 900;
    transition: transform 0.2s ease-in-out; /* Sync with controls panel */
    background: var(--accent-color);
    padding: 30px 40px;
    text-align: center;
    opacity: 1;
    scale: 1;
}

#comingSoonSection.controls-expanded {
    transform: translate(-50%, -50%) translateX(220px);
}

#comingSoonSection.hidden {
    opacity: 0;
    scale: 0.8;
    pointer-events: none;
    transition: none; /* No animation when closing */
}

#comingSoonSection.showing {
    transition: all 0.15s cubic-bezier(0.25, 0.46, 0.45, 0.94); /* Fast animation when reopening */
}

.coming-soon-content h1 {
    font-family: 'GT America Mono Thin', 'SF Mono', 'Monaco', 'Consolas', 'Liberation Mono', 'Courier New', monospace;
    font-size: 24px;
    font-weight: normal;
    color: var(--bg-color);
    margin-bottom: 20px;
    text-transform: lowercase;
}

.social-links {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

.social-links a {
    color: var(--bg-color);
    text-decoration: none;
    font-family: 'GT America Mono Light', 'SF Mono', 'Monaco', 'Consolas', 'Liberation Mono', 'Courier New', monospace;
    font-size: 14px;
    padding: 8px 12px;
    border: 1px solid var(--bg-color);
    transition: all 0.2s ease;
    text-transform: lowercase;
}

.social-links a:hover {
    background: var(--accent-color-hover);
    color: var(--hover-text-color);
    border-color: var(--accent-color-hover);
}

/* Close Button */
.close-btn {
    position: absolute;
    top: -17px;
    right: -17px;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--accent-color);
    border: 2px solid var(--bg-color);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    z-index: 1;
}

.close-btn:hover {
    transform: rotate(90deg) scale(1.1);
}

.close-btn:active {
    transform: rotate(90deg) scale(1.25);
    transition: all 0.1s ease;
}

.close-x {
    color: var(--bg-color);
    font-size: 18px;
    font-weight: bold;
    line-height: 1;
    transition: all 0.2s ease;
}

.close-btn:hover .close-x {
    transform: scale(1.2);
}

.close-btn:active .close-x {
    transform: scale(1.3);
}

/* Restore Button */
.restore-btn {
    position: fixed;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--accent-color);
    border: 2px solid var(--bg-color);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    z-index: 900;
    opacity: 1;
    scale: 1;
}

.restore-btn.hidden {
    opacity: 0;
    scale: 0.6;
    pointer-events: none;
    transform: translateX(-50%) translateY(20px);
}

.restore-btn:hover {
    transform: translateX(-50%) translateY(-8px) scale(1.1);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
}

.restore-arrow {
    color: var(--bg-color);
    font-size: 20px;
    font-weight: bold;
    line-height: 1;
    transition: all 0.3s ease;
}

.restore-btn:hover .restore-arrow {
    transform: translateY(-2px) scale(1.1);
}

/* Bounce animation for entire controls panel */
@keyframes bounce-attention {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(-50%) translateX(-220px);
    }
    10% {
        transform: translateY(-50%) translateX(-190px);
    }
    30% {
        transform: translateY(-50%) translateX(-200px);
    }
    60% {
        transform: translateY(-50%) translateX(-210px);
    }
}

#controlsContainer.collapsed.bounce {
    animation: bounce-attention 2s ease-in-out;
}

.control-group {
    margin-bottom: 10px;
}

.control-group:last-child {
    margin-bottom: 0;
}

.control-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 5px;
}

.control-group label {
    font-weight: bold;
    margin: 0;
}

.control-header span {
    font-size: 11px;
    color: var(--text-color-secondary);
    font-weight: normal;
    font-family: 'GT America Mono Light', monospace;
}

.control-group input,
.control-group select {
    width: 100%;
    margin-bottom: 5px;
}

/* Range slider styling */
.control-group input[type="range"] {
    -webkit-appearance: none;
    appearance: none;
    height: 6px;
    background: var(--border-color);
    border-radius: 3px;
    outline: none;
}

.control-group input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 16px;
    height: 16px;
    background: var(--accent-color);
    border-radius: 50%;
    cursor: pointer;
    transition: background-color 0.2s;
}

.control-group input[type="range"]::-webkit-slider-thumb:hover {
    background: var(--accent-color-hover);
}

.control-group input[type="range"]::-webkit-slider-thumb:active {
    background: var(--accent-color-active);
}

.control-group input[type="range"]::-moz-range-thumb {
    width: 16px;
    height: 16px;
    background: var(--accent-color);
    border-radius: 50%;
    border: none;
    cursor: pointer;
    transition: background-color 0.2s;
}

.control-group input[type="range"]::-moz-range-thumb:hover {
    background: var(--accent-color-hover);
}

.control-group input[type="range"]::-moz-range-thumb:active {
    background: var(--accent-color-active);
}

.control-group input[type="range"]::-moz-range-track {
    height: 6px;
    background: var(--border-color);
    border-radius: 3px;
    border: none;
}

.control-group select {
    padding: 4px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background: var(--bg-color);
    color: var(--text-color);
    font-family: 'GT America Mono Thin', monospace;
    font-size: 12px;
    transition: border-color 0.2s, background-color 0.3s ease, color 0.3s ease;
}

.control-group select:hover {
    border-color: var(--accent-color);
}

.control-group select:focus {
    border-color: var(--accent-color-hover);
    outline: none;
}

.control-group select:active {
    border-color: var(--accent-color-active);
}

.control-group input[type="text"] {
    padding: 4px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background: var(--bg-color);
    color: var(--text-color);
    font-family: 'GT America Mono Thin', monospace;
    font-size: 12px;
    transition: border-color 0.2s, background-color 0.3s ease, color 0.3s ease;
}

.control-group input[type="text"]:hover {
    border-color: var(--accent-color);
}

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

.control-group button {
    width: 100%;
    padding: 8px;
    background: var(--accent-color);
    color: var(--bg-color);
    border: none;
    border-radius: 4px;
    font-family: 'GT America Mono Light', monospace;
    font-size: 12px;
    cursor: pointer;
    transition: background-color 0.2s;
}

.control-group button:hover {
    background: var(--accent-color-hover);
    color: var(--hover-text-color);
}

.control-group button:active {
    background: var(--accent-color-active);
}

.anim-toggle-link {
    display: block;
    text-align: center;
    color: var(--accent-color);
    text-decoration: none;
    font-family: 'GT America Mono Light', monospace;
    font-size: 12px;
    padding: 4px 0;
    transition: color 0.2s ease;
}

.anim-toggle-link:hover {
    color: var(--accent-color-hover);
}

/* Override for dark mode - use light text */
:root.dark-mode .anim-toggle-link:hover {
    color: var(--hover-text-color);
}

.anim-toggle-link:active {
    color: var(--accent-color-active);
}

#grid {
    position: fixed;
    top: 0;
    left: 0;
    width: 100dvw;
    height: 100dvh;
    display: grid;
    gap: 0;
    padding: 5px;
}

/* Hide custom character input on mobile to prevent keyboard issues */
@media (max-width: 768px) {
    .control-group:has(#lettersInput) {
        display: none;
    }
}

.letter {
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
    font-weight: bold;
    user-select: none;
    color: var(--text-color);
    transition: color 0.3s ease;
}

.letter.locked {
    color: var(--accent-color);
    font-weight: bold;
    font-family: 'GT America Mono Light', monospace;
}

.icon svg {
    width: 1em;
    height: 1em;
    transition: color 0.2s ease;
}

@media (max-width: 768px) {
    /* Mobile: Disable hover effects to prevent sticky hover states on touch */
    .controls-toggle:hover {
        background: var(--accent-color);
    }
    
    .control-group button:hover {
        background: var(--accent-color);
        color: var(--bg-color);
    }
    
    .anim-toggle-link:hover {
        color: var(--accent-color);
    }
    
    /* Dark mode mobile override - needs higher specificity */
    :root.dark-mode .anim-toggle-link:hover {
        color: var(--accent-color);
    }
    
    .social-links a:hover {
        background: transparent;
        color: var(--bg-color);
        border-color: var(--bg-color);
    }
    
    .close-btn:hover {
        transform: none;
    }
    
    .restore-btn:hover {
        transform: translateX(-50%);
        box-shadow: none;
    }

    #controlsContainer {
        top: calc(20px + env(safe-area-inset-top));
        left: calc(10px + env(safe-area-inset-left));
        transform: translateY(0);
    }

    #controlsContainer.collapsed {
        transform: translateY(0) translateX(-210px); /* Hide completely: 200px width + 10px initial left position */
    }

    /* Coming Soon Section - Mobile */
    #comingSoonSection {
        padding: 30px 25px;
        min-width: 280px;
        width: auto;
    }

    #comingSoonSection.controls-expanded {
        transform: translate(-50%, -50%) translateX(210px);
    }

    .coming-soon-content h1 {
        font-size: 22px;
        margin-bottom: 20px;
        white-space: nowrap;
    }

    .social-links {
        gap: 18px;
        max-width: none;
    }

    .social-links a {
        font-size: 14px;
        padding: 10px 16px;
        flex: 0 0 auto;
    }

    /* Mobile Button Adjustments */
    .close-btn {
        width: 44px;
        height: 44px;
        top: -17px;
        right: -17px;
    }

    .close-x {
        font-size: 20px;
    }

    .restore-btn {
        width: 52px;
        height: 52px;
        bottom: 50px;
    }

    .restore-arrow {
        font-size: 22px;
    }

    /* Mobile-specific bounce animation */
    @keyframes bounce-attention-mobile {
        0%, 20%, 50%, 80%, 100% {
            transform: translateY(0) translateX(-210px);
        }
        10% {
            transform: translateY(0) translateX(-180px);
        }
        30% {
            transform: translateY(0) translateX(-190px);
        }
        60% {
            transform: translateY(0) translateX(-200px);
        }
    }

    #controlsContainer.collapsed.bounce {
        animation: bounce-attention-mobile 2s ease-in-out;
    }

    #controls {
        padding: 14px;
        font-size: 13px;
        width: 200px;
        border-radius: 4px;
    }

    .controls-toggle {
        padding: 18px 12px;
        font-size: 24px;
        min-height: 90px;
        min-width: 42px;
        align-self: flex-start;
    }

    .controls-toggle .arrow {
        top: 20px; /* Position at bottom when expanded (pointing left) */
    }

    #controlsContainer.collapsed .controls-toggle .arrow {
        top: -20px; /* Position at top when collapsed (pointing right) */
    }

    #grid {
        grid-template-columns: repeat(auto-fit, minmax(18px, 1fr));
        grid-template-rows: repeat(auto-fit, minmax(18px, 1fr));
        padding: 5px;
    }
    
    .letter {
        font-size: 0.85rem;
    }

    /* Improve touch targets for mobile */
    .control-group input[type="range"]::-webkit-slider-thumb {
        width: 20px;
        height: 20px;
    }

    .control-group input[type="range"]::-moz-range-thumb {
        width: 20px;
        height: 20px;
    }

    .control-group select {
        padding: 10px;
        font-size: 15px;
    }

    .control-group input[type="text"] {
        padding: 10px;
        font-size: 15px;
    }

    .dark-mode-toggle {
        top: calc(20px + env(safe-area-inset-top));
        right: calc(20px + env(safe-area-inset-right));
    }
    
    .toggle-track {
        width: 60px;
        height: 30px;
    }
    
    .toggle-thumb {
        width: 26px;
        height: 26px;
    }
    
    .icon {
        font-size: 14px;
        will-change: color;
    }
    
    .icon svg {
        will-change: color;
        transition: color 0.15s ease !important;
    }
    
    :root.dark-mode .toggle-thumb {
        left: 32px;
    }
}

/* Accessibility: Respect user's motion preferences */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    /* Disable bounce animations */
    #controlsContainer.collapsed.bounce {
        animation: none !important;
    }
}

/* Improved focus styles for accessibility */
.dark-mode-toggle:focus-visible {
    outline: 2px solid var(--accent-color);
    outline-offset: 2px;
}

.controls-toggle:focus-visible,
.close-btn:focus-visible,
.restore-btn:focus-visible {
    outline: 2px solid var(--bg-color);
    outline-offset: 2px;
}

.control-group input:focus-visible,
.control-group select:focus-visible,
.control-group button:focus-visible,
.anim-toggle-link:focus-visible {
    outline: 2px solid var(--accent-color);
    outline-offset: 2px;
}

.social-links a:focus-visible {
    outline: 2px solid var(--bg-color);
    outline-offset: 2px;
}