/* Modern Fullscreen Canvas with Overlay UI */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html, body {
    height: 100vh;
    width: 100vw;
    overflow: hidden;
    /* prefer Apple's system fonts for a native feel */
    font-family: -apple-system, 'SF Pro Text', 'Inter', BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: #000; /* keep canvas background dark while the UI panel is light */
}

/* Fullscreen Canvas */
main {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 1;
}

canvas {
    display: block;
    width: 100% !important;
    height: 100% !important;
}

/* Modern UI Overlay */
.ui-overlay {
    position: fixed;
    top: 0;
    left: 0;
    /* the UI panel is lighter and slightly translucent for an Apple-like feel */
    width: 420px;
    height: 100vh;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: 8px 0 30px rgba(0,0,0,0.12);
    border-right: none;
    z-index: 100;
    transition: transform 0.28s cubic-bezier(0.2, 0.8, 0.2, 1), box-shadow 0.28s ease;
    transform: translateX(0);
}

.ui-overlay.hidden {
    /* fully hide offscreen and stop interactions */
    transform: translateX(calc(-110% - 8px));
    pointer-events: none;
}

.panel {
    padding: 28px 24px;
    height: 100%;
    overflow-y: auto;
    color: #1c1c1e; /* dark text on light panel */
    border-radius: 0 12px 12px 0; /* rounded inner edge */
}

/* Typography */
h1 {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 8px;
    color: #0a84ff; /* system blue accent */
}

h2 {
    font-size: 15px;
    font-weight: 600;
    color: #1c1c1e;
    margin-bottom: 12px;
    margin-top: 24px;
}

.sub {
    font-size: 13px;
    color: rgba(28,28,30,0.6);
    margin-bottom: 20px;
    line-height: 1.4;
}

.section {
    margin-bottom: 24px;
}

/* Modern Controls */
.row {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}

.row label {
    min-width: 120px;
    font-size: 13px;
    color: rgba(28,28,30,0.8);
    font-weight: 600;
}

/* Styled range slider suitable for light panel background */
input[type="range"] {
    flex: 1;
    height: 28px; /* allow room for thumb */
    background: transparent;
    border: none;
    padding: 0;
    margin: 0;
    -webkit-appearance: none;
    appearance: none;
    outline: none;
}

/* WebKit track */
input[type="range"]::-webkit-slider-runnable-track {
    height: 8px;
    background: linear-gradient(90deg, #eef0f2 0%, #ececec 100%);
    border-radius: 999px;
    box-shadow: inset 0 1px 0 rgba(0,0,0,0.04);
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    margin-top: -6px; /* vertically center on the track */
    background: linear-gradient(135deg, #7b61ff 0%, #6d6af8 100%);
    border: 2px solid #fff;
    box-shadow: 0 8px 18px rgba(0,0,0,0.12), 0 0 0 4px rgba(10,132,255,0.06);
    cursor: pointer;
}

input[type="range"]:focus::-webkit-slider-runnable-track {
    box-shadow: inset 0 1px 0 rgba(0,0,0,0.04), 0 0 0 6px rgba(10,132,255,0.06);
}

/* Firefox track/thumb */
input[type="range"]::-moz-range-track {
    height: 8px;
    background: #ececec;
    border-radius: 999px;
    box-shadow: inset 0 1px 0 rgba(0,0,0,0.04);
}

input[type="range"]::-moz-range-thumb {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: linear-gradient(135deg, #7b61ff 0%, #6d6af8 100%);
    border: 2px solid #fff;
    box-shadow: 0 8px 18px rgba(0,0,0,0.12);
    cursor: pointer;
}

input[type="range"]:focus {
    outline: none;
}

input[type="number"] {
    width: 70px;
    background: #f6f6f8;
    border: 1px solid rgba(0,0,0,0.06);
    border-radius: 8px;
    padding: 8px 12px;
    color: #111;
    font-size: 13px;
    text-align: center;
}

input[type="number"]:focus {
    outline: none;
    border-color: rgba(10,132,255,0.9);
    box-shadow: 0 0 0 4px rgba(10,132,255,0.08);
    background: #fff;
}

/* Text Area */
.text-area {
    margin-bottom: 16px;
}

.text-area label {
    display: block;
    font-size: 13px;
    color: rgba(28,28,30,0.78); /* dark gray for readability */
    font-weight: 600;
    margin-bottom: 8px;
}

textarea {
    width: 100%;
    background: #f6f6f8;
    border: 1px solid rgba(0,0,0,0.06);
    border-radius: 8px;
    padding: 12px;
    color: #111;
    font-size: 13px;
    font-family: -apple-system, 'SF Pro Text', Inter, sans-serif;
    resize: vertical;
    min-height: 80px;
}

textarea:focus {
    outline: none;
    border-color: rgba(10,132,255,0.9);
    box-shadow: 0 0 0 4px rgba(10,132,255,0.06);
    background: #fff;
}

/* Ensure textarea content is dark on the light panel (override older white rules) */
.text-area textarea,
#textContent {
    color: #1c1c1e !important;
}
.text-area textarea::placeholder,
#textContent::placeholder {
    color: rgba(28,28,30,0.45) !important;
}

/* Toggle Switch */
.tog {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}

input[type="checkbox"] {
    width: 44px;
    height: 24px;
    appearance: none;
    background: #e9e9ed;
    border-radius: 12px;
    position: relative;
    cursor: pointer;
    transition: background 0.22s ease;
    border: 1px solid rgba(0,0,0,0.04);
}

input[type="checkbox"]:checked {
    background: rgba(10,132,255,0.95);
}

input[type="checkbox"]::before {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: #fff;
    top: 2px;
    left: 2px;
    transition: transform 0.22s ease;
    box-shadow: 0 1px 2px rgba(0,0,0,0.08);
}

input[type="checkbox"]:checked::before {
    transform: translateX(20px);
}

/* Modern Buttons */
.btns {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

button {
    background: #f2f2f7;
    border: 1px solid rgba(0,0,0,0.06);
    border-radius: 12px;
    padding: 10px 16px;
    color: #0a84ff;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.18s ease;
    box-shadow: 0 4px 10px rgba(0,0,0,0.04);
}

button:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.06);
}

button:active { transform: translateY(0); }

/* Hamburger Button - positioned outside of UI overlay */
.hamburger-btn {
    position: fixed;
    top: 32px;
    left: 400px; /* default position (will be overridden when open/hidden) */
    z-index: 1100; /* ensure this sits above overlays and indicators */
    width: 48px;
    height: 48px;
    background: rgba(15, 15, 15, 0.8);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    color: #ffffff;
    font-size: 20px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.hamburger-btn:hover {
    /* keep contrast for the icon: use a subtle light background and dark icon color */
    background: rgba(255, 255, 255, 0.08);
    color: #111;
    transform: scale(1.05);
}

.hamburger-btn.ui-hidden {
    left: 32px; /* Move to left edge when UI is hidden */
}

/* When UI is open, place the button just outside the panel's right edge */
.hamburger-btn.ui-open {
    /* Assuming panel width 420px + left offset 0, place button slightly inside viewport */
    left: calc(420px + 12px);
}

/* Recording indicator (persistent, outside canvas) */
.record-indicator {
    position: fixed;
    top: 18px;
    right: 18px;
    z-index: 1000;
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 10px;
    background: rgba(0,0,0,0.6);
    border: 1px solid rgba(255, 0, 0, 0.25);
    border-radius: 14px;
    color: #fff;
    font-weight: 700;
    font-size: 12px;
    pointer-events: none; /* non-interactive */
}
.record-indicator .rec-dot {
    width: 10px;
    height: 10px;
    background: #ff3b30;
    border-radius: 50%;
    box-shadow: 0 0 8px rgba(255,59,48,0.8);
}
.record-indicator .rec-label { font-family: 'Inter', sans-serif; }

/* Color Menu Overlay */
.color-menu {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(10px);
    z-index: 300;
    display: flex;
    align-items: center;
    justify-content: center;
}

.color-menu-content {
    background: rgba(15, 15, 15, 0.95);
    backdrop-filter: blur(30px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 24px;
    padding: 32px;
    max-width: 600px;
    width: 90vw;
    max-height: 80vh;
    overflow-y: auto;
    color: #ffffff;
}

.color-menu h2 {
    text-align: center;
    margin-bottom: 32px;
    font-size: 24px;
}

.color-categories {
    display: grid;
    gap: 24px;
    margin-bottom: 32px;
}

.color-item {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    padding: 20px;
    transition: all 0.3s ease;
}

.color-item.active {
    border-color: #667eea;
    background: rgba(102, 126, 234, 0.1);
}

.color-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
}

.color-header h3 {
    font-size: 18px;
    font-weight: 600;
}

.color-preview {
    width: 40px;
    height: 40px;
    border-radius: 8px;
    border: 2px solid rgba(255, 255, 255, 0.2);
}

.rgb-controls {
    display: grid;
    gap: 12px;
}

.rgb-slider {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.rgb-slider.selected {
    background: rgba(37, 164, 255, 0.1);
    border: 1px solid rgba(37, 164, 255, 0.3);
}

.rgb-slider.inactive {
    opacity: 0.5;
}

.rgb-slider label {
    min-width: 40px;
    font-size: 13px;
    font-weight: 500;
}

.rgb-slider input[type="range"] {
    flex: 1;
    margin: 0 8px;
}

.rgb-slider .value {
    min-width: 32px;
    text-align: center;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.8);
}

/* Color Actions */
.color-actions {
    display: flex;
    justify-content: center;
    margin-bottom: 24px;
}

/* Reset option visual cue */
#resetOption {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
    padding: 12px 18px;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.18s ease;
}

#resetOption:hover,
#resetOption:focus,
.menu-option.active,
#resetOption.active {
    background: linear-gradient(135deg, rgba(102,126,234,0.18) 0%, rgba(118,75,162,0.18) 100%);
    border-color: #667eea;
    transform: translateY(-2px);
    box-shadow: 0 6px 18px rgba(102,126,234,0.12);
}

#resetOption:active {
    transform: translateY(0);
}

.reset-btn {
    background: rgba(255, 59, 48, 0.1);
    border-color: rgba(255, 59, 48, 0.3);
    color: #ff3b30;
}

.reset-btn:hover {
    background: rgba(255, 59, 48, 0.2);
}

.reset-btn.active {
    background: rgba(255, 59, 48, 0.2);
    border-color: #ff3b30;
}

/* Gamepad Hints */
.gamepad-hints {
    text-align: center;
    padding: 16px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.6);
}

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

::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.2);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.3);
}

/* Responsive Design */
@media (max-width: 768px) {
    .ui-overlay {
        width: 100vw;
    }
    
    .color-menu-content {
        width: 95vw;
        padding: 24px;
    }
}