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

:root {
    --accent: #78e030;
    --accent-dim: #60b828;
    --accent-soft: #8ae848;
    --accent-glow: #a0f068;
    --accent-bg: #0f1c08;
    --accent-bg-hover: #1a3010;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: #0a0a0a;
    color: #ffffff;
    overflow: hidden;
    height: 100vh;
}

/* ===== SPLASH SCREEN ===== */
.splash-screen {
    position: fixed;
    inset: 0;
    background: #0a0a0a;
    z-index: 99999;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.splash-screen.fade-out {
    opacity: 0;
    visibility: hidden;
}

.splash-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
    animation: splashEntry 0.6s ease-out;
}

@keyframes splashEntry {
    0% { opacity: 0; transform: scale(0.9) translateY(10px); }
    100% { opacity: 1; transform: scale(1) translateY(0); }
}

.splash-logo {
    width: 72px;
    height: 72px;
    border-radius: 14px;
    object-fit: contain;
    filter: drop-shadow(0 0 30px rgba(120, 224, 48, 0.3));
    animation: splashPulse 1.4s ease-in-out infinite alternate;
}

@keyframes splashPulse {
    0% { filter: drop-shadow(0 0 20px rgba(120, 224, 48, 0.2)); }
    100% { filter: drop-shadow(0 0 40px rgba(120, 224, 48, 0.5)); }
}

.splash-text {
    font-family: 'Inter', sans-serif;
    font-size: 28px;
    font-weight: 600;
    letter-spacing: 4px;
    color: #eee;
}

.splash-bar {
    width: 120px;
    height: 2px;
    background: #1a1a1a;
    border-radius: 2px;
    overflow: hidden;
    margin-top: 8px;
}

.splash-bar-fill {
    width: 0%;
    height: 100%;
    background: var(--accent);
    border-radius: 2px;
    animation: splashLoad 1.2s ease-in-out forwards;
}

@keyframes splashLoad {
    0% { width: 0%; }
    60% { width: 70%; }
    100% { width: 100%; }
}

@keyframes pageLoad {
    0% {
        opacity: 0;
        transform: translateY(8px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes headerSlide {
    0% {
        opacity: 0;
        transform: translateY(-100%);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes panelSlide {
    0% {
        opacity: 0;
        transform: translateX(20px);
    }
    100% {
        opacity: 1;
        transform: translateX(0);
    }
}

.app-container {
    display: flex;
    flex-direction: column;
    height: 100vh;
    animation: pageLoad 0.4s ease-out;
}

.header-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: #111;
    border-bottom: 1px solid #1e1e1e;
    padding: 0 16px;
    height: 48px;
    z-index: 20;
    position: relative;
    animation: headerSlide 0.35s ease-out;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-img {
    width: 26px;
    height: 26px;
    border-radius: 6px;
    object-fit: contain;
}

.logo-icon {
    width: 24px;
    height: 24px;
    color: #fff;
}

.logo-text {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.header-left h1 {
    font-family: 'Inter', sans-serif;
    font-size: 16px;
    font-weight: 600;
    letter-spacing: 1.5px;
    color: #eee;
    margin: 0;
    line-height: 1;
}

.logo-byline {
    font-size: 9px;
    color: #4a4a4a;
    letter-spacing: 0.5px;
    margin-top: 2px;
    font-family: 'JetBrains Mono', monospace;
}

.header-center {
    display: flex;
    gap: 4px;
    align-items: center;
}

.header-divider {
    width: 1px;
    height: 24px;
    background: #222;
    margin: 0 8px;
}

.header-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    background: #161616;
    color: #888;
    border: 1px solid #252525;
    padding: 6px 10px;
    cursor: pointer;
    text-transform: uppercase;
    font-size: 10px;
    letter-spacing: 0.8px;
    transition: all 0.15s ease;
    font-family: 'JetBrains Mono', 'Courier New', monospace;
    border-radius: 6px;
    font-weight: 500;
}

.header-btn:active {
    transform: scale(0.97);
}

.header-btn svg {
    width: 14px;
    height: 14px;
    stroke-width: 2;
}

.header-btn:hover {
    background: #1e1e1e;
    border-color: #3a3a3a;
    color: #ccc;
}

.header-btn.primary {
    background: var(--accent-bg);
    border-color: var(--accent-dim);
    color: #fff;
}

.header-btn.primary:hover {
    background: var(--accent-bg-hover);
    border-color: var(--accent);
}

.header-btn input {
    display: none;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 15px;
    font-size: 11px;
    color: #666;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    font-family: 'JetBrains Mono', monospace;
}

.main-layout {
    display: flex;
    flex: 1;
    overflow: hidden;
    position: relative;
}

.canvas-area {
    flex: 1;
    display: flex;
    flex-direction: column;
    background: #0a0a0a;
    position: relative;
}

.canvas-wrapper {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    background-image:
        repeating-linear-gradient(0deg, transparent, transparent 19px, #0f0f0f 19px, #0f0f0f 20px),
        repeating-linear-gradient(90deg, transparent, transparent 19px, #0f0f0f 19px, #0f0f0f 20px);
}

#mainCanvas {
    max-width: 90%;
    max-height: 90%;
    border: 1px solid #222;
    background: #000;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.6);
    will-change: transform;
    transform-origin: center center;
    image-rendering: pixelated;
    border-radius: 4px;
}

#annotationCanvas {
    position: absolute;
    border: 1px solid transparent;
    pointer-events: auto;
    cursor: crosshair;
    transition: opacity 0.2s ease;
    will-change: transform;
    transform-origin: center center;
    image-rendering: pixelated;
}

#overlayCanvas {
    position: absolute;
    pointer-events: none;
    transition: opacity 0.2s ease;
    will-change: transform;
    transform-origin: center center;
}

#magnifierCanvas {
    position: absolute;
    border: 2px solid #444;
    border-radius: 8px;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.8);
    pointer-events: none;
    display: none;
    z-index: 1000;
    background: #000;
}

.pixel-info {
    position: absolute;
    background: rgba(10, 10, 10, 0.95);
    border: 1px solid #333;
    border-radius: 6px;
    color: var(--accent);
    padding: 8px 10px;
    font-size: 10px;
    font-family: 'JetBrains Mono', monospace;
    pointer-events: none;
    display: none;
    z-index: 1001;
    text-transform: uppercase;
    letter-spacing: 0.8px;
}

.status-bar {
    background: #0e0e0e;
    border-top: 1px solid #1a1a1a;
    padding: 8px 20px;
    display: flex;
    align-items: center;
    gap: 30px;
    font-size: 10px;
    font-family: 'JetBrains Mono', monospace;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    color: #555;
}

.status-left {
    display: flex;
    gap: 20px;
}

.status-left span {
    color: var(--accent);
}

#mouseCoords {
    display: inline-block;
    min-width: 110px;
}

#pixelValue {
    display: inline-block;
    min-width: 120px;
}

.shortcuts {
    display: flex;
    gap: 20px;
}

.shortcut {
    color: #444;
    font-size: 9px;
}

.shortcut kbd {
    display: inline-block;
    background: #151515;
    border: 1px solid #252525;
    border-radius: 4px;
    padding: 2px 6px;
    margin-right: 5px;
    color: var(--accent);
    font-family: 'JetBrains Mono', monospace;
    font-size: 9px;
}

.control-panel {
    position: absolute;
    right: 0;
    top: 0;
    bottom: 0;
    width: 420px;
    min-width: 320px;
    max-width: 600px;
    background: #111;
    border-left: 1px solid #1a1a1a;
    display: flex;
    flex-direction: column;
    z-index: 10;
    transition: width 0.15s ease;
    animation: panelSlide 0.4s ease-out;
}

.control-panel.collapsed {
    width: 10px !important;
    min-width: 10px;
    border-left: 1px solid #1a1a1a;
    background: #0a0a0a;
}

.control-panel.collapsed:hover {
    border-left-color: var(--accent-dim);
}

.control-panel.collapsed .tab-nav,
.control-panel.collapsed .tab-panels {
    display: none;
}

.control-panel.collapsed .panel-resize-handle {
    width: 100%;
    background: #111;
    border-right: none;
}

.control-panel.collapsed .panel-resize-handle:hover {
    background: #161616;
}

.panel-resize-handle {
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 6px;
    cursor: ew-resize;
    background: #131313;
    border-right: 1px solid #1e1e1e;
    z-index: 100;
    transition: background 0.15s;
}

.panel-resize-handle:hover {
    background: #1a1a1a;
    border-right-color: var(--accent-dim);
}

.panel-resize-handle.dragging {
    background: var(--accent-bg);
    border-right-color: var(--accent-dim);
}

/* Toggle group in header */
.toggle-group {
    display: flex;
    align-items: center;
    gap: 4px;
    background: #0e0e0e;
    border: 1px solid #1e1e1e;
    padding: 2px 6px;
    border-radius: 6px;
}

.toggle-group-label {
    font-size: 8px;
    color: #444;
    letter-spacing: 0.8px;
    margin-right: 4px;
    font-family: 'JetBrains Mono', monospace;
}

/* Toggle buttons in header */
.header-btn.toggle-btn {
    width: 32px;
    height: 28px;
    padding: 0 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 2px;
    position: relative;
}

.header-btn.toggle-btn.labeled {
    width: auto;
    padding: 0 8px;
    gap: 4px;
}

.header-btn.toggle-btn svg {
    width: 12px;
    height: 12px;
}

.toggle-label {
    font-size: 9px;
    letter-spacing: 0.5px;
    color: #555;
}

.toggle-indicator {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: #252525;
    border: 1px solid #333;
    flex-shrink: 0;
    transition: all 0.2s ease;
}

.header-btn.toggle-btn.active {
    background: var(--accent-bg);
    border-color: var(--accent-dim);
    color: var(--accent-soft);
}

.header-btn.toggle-btn.active .toggle-label {
    color: var(--accent-soft);
}

.header-btn.toggle-btn.active .toggle-indicator {
    background: var(--accent-dim);
    border-color: var(--accent-dim);
}

/* Sidebar toggle specific */
.header-btn.sidebar-toggle {
    width: auto;
    padding: 0 10px;
    gap: 6px;
}

/* Help button next to logo */
.header-btn.help-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    min-width: 28px;
    padding: 0;
    margin-left: 12px;
    font-size: 13px;
    font-weight: 600;
    color: #666;
    line-height: 1;
    border-radius: 50%;
}

.header-btn.help-btn:hover {
    color: var(--accent);
    background: #1e1e1e;
}

.tab-nav {
    display: flex;
    background: #0a0a0a;
    border-bottom: 1px solid #1a1a1a;
    margin-left: 6px;
    gap: 1px;
}

.tab-btn {
    flex: 1;
    background: transparent;
    color: #555;
    border: none;
    padding: 12px 8px;
    cursor: pointer;
    font-size: 10px;
    font-family: 'JetBrains Mono', monospace;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    transition: all 0.15s;
    position: relative;
    font-weight: 500;
}

.tab-btn:hover {
    color: #888;
    background: #111;
}

.tab-btn.active {
    color: #ddd;
    background: #131313;
}

.tab-btn.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--accent);
    animation: tabSlide 0.2s ease;
}

@keyframes tabSlide {
    from { transform: scaleX(0); }
    to { transform: scaleX(1); }
}

.tab-panels {
    flex: 1;
    overflow-y: auto;
    background: #0c0c0c;
    margin-left: 6px;
}

.tab-panel {
    display: none;
    padding: 20px;
    padding-bottom: 200px;
}

.tab-panel.active {
    display: block;
}

.panel-section {
    margin-bottom: 20px;
    padding-bottom: 16px;
    border-bottom: 1px solid #151515;
}

.panel-section:last-child {
    border-bottom: none;
    margin-bottom: 0;
}

.panel-section h3 {
    font-size: 10px;
    font-weight: 500;
    letter-spacing: 1.5px;
    color: #555;
    margin-bottom: 12px;
    font-family: 'JetBrains Mono', monospace;
}

.control-row {
    display: flex;
    align-items: center;
    margin-bottom: 8px;
    gap: 8px;
}

.control-row label {
    flex: 0 0 70px;
    font-size: 10px;
    color: #555;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    font-family: 'JetBrains Mono', monospace;
    font-weight: 500;
}

.control-row input[type="range"] {
    flex: 1;
    -webkit-appearance: none;
    appearance: none;
    height: 2px;
    background: #252525;
    outline: none;
    border-radius: 2px;
}

.control-row input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 14px;
    height: 14px;
    background: #333;
    cursor: pointer;
    border-radius: 50%;
    border: 2px solid #555;
    transition: all 0.15s;
}

.control-row input[type="range"]::-webkit-slider-thumb:hover {
    background: #444;
    border-color: #888;
}

.control-row input[type="range"]::-moz-range-thumb {
    width: 14px;
    height: 14px;
    background: #333;
    cursor: pointer;
    border-radius: 50%;
    border: 2px solid #555;
}

.control-row .value {
    flex: 0 0 40px;
    text-align: right;
    font-size: 10px;
    color: var(--accent);
    font-family: 'JetBrains Mono', monospace;
}

.control-row input[type="text"] {
    flex: 1;
    background: #131313;
    border: 1px solid #222;
    color: #ddd;
    padding: 6px 10px;
    font-size: 11px;
    font-family: 'JetBrains Mono', monospace;
    border-radius: 6px;
    transition: border-color 0.15s;
}

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

.control-row input[type="color"] {
    flex: 1;
    height: 30px;
    background: #131313;
    border: 1px solid #222;
    cursor: pointer;
    border-radius: 6px;
}

.button-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 6px;
}

.filter-btn,
.tool-btn {
    background: #131313;
    color: #777;
    border: 1px solid #1e1e1e;
    padding: 9px 6px;
    cursor: pointer;
    font-size: 10px;
    font-family: 'JetBrains Mono', monospace;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    transition: all 0.15s ease;
    border-radius: 6px;
    font-weight: 500;
}

.filter-btn:hover,
.tool-btn:hover {
    background: #1a1a1a;
    color: #ccc;
    border-color: #333;
}

.filter-btn:active,
.tool-btn:active {
    transform: scale(0.96);
}

.tool-btn.active,
.filter-btn.active {
    background: var(--accent-bg);
    color: var(--accent);
    border-color: var(--accent-dim);
}

.section-reset-btn {
    width: 100%;
    background: #111;
    color: #555;
    border: 1px solid #1e1e1e;
    padding: 7px;
    cursor: pointer;
    font-size: 9px;
    font-family: 'JetBrains Mono', monospace;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    transition: all 0.15s;
    margin-top: 10px;
    border-radius: 6px;
}

.section-reset-btn:hover {
    color: #999;
    background: #161616;
    border-color: #333;
}

.panel-btn {
    width: 100%;
    background: #131313;
    color: #777;
    border: 1px solid #1e1e1e;
    padding: 8px;
    cursor: pointer;
    font-size: 10px;
    font-family: 'JetBrains Mono', monospace;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    transition: all 0.15s ease;
    margin-top: 8px;
    border-radius: 6px;
    font-weight: 500;
}

.panel-btn:hover {
    background: #1a1a1a;
    border-color: #333;
    color: #ccc;
}

.panel-btn:active {
    transform: scale(0.98);
}

.select-input {
    width: 100%;
    background: #131313;
    color: #ddd;
    border: 1px solid #222;
    padding: 8px 10px;
    font-size: 10px;
    font-family: 'JetBrains Mono', monospace;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    cursor: pointer;
    border-radius: 6px;
    transition: border-color 0.15s;
}

.select-input:hover {
    border-color: #3a3a3a;
}

.select-input option {
    background: #131313;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 10px;
    cursor: pointer;
    font-size: 10px;
    color: #777;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    font-family: 'JetBrains Mono', monospace;
}

.checkbox-label input[type="checkbox"] {
    width: 14px;
    height: 14px;
    accent-color: #fff;
    border-radius: 3px;
}

.checkbox-label:hover {
    color: #aaa;
}

.exif-content {
    font-size: 11px;
    font-family: 'JetBrains Mono', monospace;
    color: #777;
}

.exif-table {
    width: 100%;
}

.exif-table tr {
    border-bottom: 1px solid #181818;
}

.exif-table td {
    padding: 8px 0;
}

.exif-key {
    color: #555;
    text-transform: uppercase;
    width: 40%;
    font-size: 10px;
    letter-spacing: 0.5px;
}

.exif-value {
    color: var(--accent);
    word-break: break-all;
}

.no-data {
    color: #333;
    text-align: center;
    padding: 24px;
    text-transform: uppercase;
    font-size: 10px;
    letter-spacing: 1px;
    font-family: 'JetBrains Mono', monospace;
}

.meta-section {
    margin-bottom: 20px;
}

.meta-section h4 {
    font-size: 10px;
    font-weight: 500;
    letter-spacing: 1.5px;
    color: #555;
    margin-bottom: 10px;
    padding-bottom: 5px;
    border-bottom: 1px solid #181818;
    font-family: 'JetBrains Mono', monospace;
}

.gps-info {
    padding: 12px;
    background: #0e0e0e;
    border: 1px solid #1e1e1e;
    border-radius: 6px;
}

.gps-info a,
.map-link {
    display: inline-block;
    margin-top: 10px;
    color: var(--accent);
    text-decoration: none;
    font-size: 10px;
    letter-spacing: 0.8px;
}

.gps-info a:hover,
.map-link:hover {
    text-decoration: underline;
    color: var(--accent-glow);
}

::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

::-webkit-scrollbar-track {
    background: #0a0a0a;
}

::-webkit-scrollbar-thumb {
    background: #222;
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: #333;
}

/* Thumbnail */
.thumbnail-container {
    display: none;
    border: 1px solid #222;
    overflow: hidden;
    margin-right: 10px;
    flex-shrink: 0;
    border-radius: 4px;
}

.thumbnail-container.visible {
    display: block;
}

#thumbnailCanvas {
    display: block;
    height: 36px;
    width: auto;
    image-rendering: auto;
}

/* Curves editor */
.curves-container {
    position: relative;
    background: #000;
    border: 1px solid #222;
    margin-bottom: 4px;
    border-radius: 6px;
    overflow: hidden;
}

#curvesCanvas {
    width: 100%;
    height: auto;
    display: block;
    cursor: crosshair;
}

.curves-hint {
    font-size: 9px;
    color: #3a3a3a;
    letter-spacing: 0.5px;
    margin-bottom: 4px;
    font-family: 'JetBrains Mono', monospace;
}

/* Histogram */
#histogramCanvas {
    width: 100%;
    height: auto;
    background: #0a0a0a;
    border: 1px solid #222;
    display: block;
    border-radius: 6px;
}

/* Color picker */
.picker-result {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px;
    background: #0e0e0e;
    border: 1px solid #222;
    border-radius: 6px;
}

.picker-swatch {
    width: 40px;
    height: 40px;
    border: 1px solid #333;
    background: #000;
    flex-shrink: 0;
    border-radius: 6px;
}

.picker-values {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.picker-value {
    font-size: 10px;
    font-family: 'JetBrains Mono', monospace;
    color: var(--accent);
    letter-spacing: 0.8px;
    text-transform: uppercase;
}

/* Status bar picked color */
.picked-color {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.picked-swatch {
    display: inline-block;
    width: 10px;
    height: 10px;
    border: 1px solid #444;
    border-radius: 2px;
}

/* Section toggles */
.section-toggle {
    display: flex;
    align-items: center;
    gap: 6px;
    cursor: pointer;
    margin: 0;
}

.section-toggle input[type="checkbox"] {
    width: 10px;
    height: 10px;
    accent-color: var(--accent);
    cursor: pointer;
    margin: 0;
}

.section-toggle span {
    font-size: 9px;
    font-weight: 500;
    letter-spacing: 0.8px;
    color: #444;
    font-family: 'JetBrains Mono', monospace;
}

.panel-section.disabled .section-body {
    opacity: 0.2;
    pointer-events: none;
}

.panel-section.disabled .section-toggle span {
    color: #2a2a2a;
}

/* Collapse button */
.collapse-btn {
    flex: 0 0 auto;
    width: 36px;
    background: #131313;
    color: var(--accent);
    border: none;
    border-left: 1px solid #1e1e1e;
    padding: 12px 0;
    cursor: pointer;
    font-size: 14px;
    font-family: 'JetBrains Mono', monospace;
    transition: all 0.15s;
    margin-left: auto;
    text-align: center;
}

.collapse-btn:hover {
    color: #ccc;
    background: #1a1a1a;
}

.loading {
    opacity: 0.5;
    pointer-events: none;
}

@media (max-width: 768px) {
    .control-panel {
        width: 300px;
    }

    .tab-nav {
        overflow-x: auto;
    }
}

/* Section hints */
.section-hint {
    font-size: 10px;
    color: #444;
    margin-bottom: 12px;
    line-height: 1.5;
    font-family: 'JetBrains Mono', monospace;
    letter-spacing: 0.3px;
}

/* Auto enhance presets */
.preset-btn {
    background: #131313;
    color: #777;
    border: 1px solid #1e1e1e;
    padding: 9px 6px;
    cursor: pointer;
    font-size: 10px;
    font-family: 'JetBrains Mono', monospace;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    transition: all 0.15s;
    border-radius: 6px;
    font-weight: 500;
}

.preset-btn:hover {
    background: #1a1a1a;
    color: var(--accent);
    border-color: var(--accent-dim);
}

.preset-btn.active {
    background: var(--accent-bg);
    color: var(--accent);
    border-color: var(--accent-dim);
}

/* Collapsible sections */
.collapsible {
    background: #0e0e0e;
    border: 1px solid #1a1a1a;
    margin-bottom: 12px;
    border-radius: 8px;
    overflow: hidden;
}

.collapsible:last-child {
    margin-bottom: 80px;
}

.collapsible-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    user-select: none;
    padding: 11px 14px;
    background: #111;
    margin-bottom: 0;
    transition: background 0.15s;
}

.collapsible-header:hover {
    background: #151515;
}

.collapsible-header span:first-child {
    color: #777;
    font-size: 10px;
    letter-spacing: 1.5px;
    font-family: 'JetBrains Mono', monospace;
    font-weight: 500;
}

.collapse-icon {
    font-size: 14px;
    color: var(--accent-soft);
    font-weight: bold;
    transition: transform 0.2s;
}

.expand-hint {
    font-size: 9px;
    color: #333;
    letter-spacing: 0.5px;
    margin-left: auto;
    margin-right: 8px;
    font-weight: normal;
    font-family: 'JetBrains Mono', monospace;
}

.collapsible.expanded .expand-hint {
    display: none;
}

.collapsible.expanded .collapse-icon {
    transform: rotate(45deg);
}

.collapsible.expanded .collapsible-header {
    border-bottom: 1px solid #1a1a1a;
}

.collapsible-body {
    display: none;
    padding: 14px;
    padding-bottom: 16px;
}

.collapsible.expanded .collapsible-body {
    display: block;
}

.panel-subsection {
    margin-bottom: 14px;
    padding-bottom: 10px;
    border-bottom: 1px solid #151515;
}

.panel-subsection:last-child {
    border-bottom: none;
    margin-bottom: 0;
}

.panel-subsection h4 {
    font-size: 9px;
    font-weight: 500;
    letter-spacing: 0.8px;
    color: #444;
    margin-bottom: 8px;
    font-family: 'JetBrains Mono', monospace;
}

/* Crop instructions */
.crop-instructions {
    background: #0e0e0e;
    border: 1px solid #1a1a1a;
    padding: 12px;
    margin-bottom: 12px;
    border-radius: 6px;
}

.instruction-step {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-size: 10px;
    color: #777;
    margin-bottom: 8px;
    line-height: 1.4;
    font-family: 'JetBrains Mono', monospace;
    letter-spacing: 0.3px;
}

.instruction-step:last-child {
    margin-bottom: 0;
}

.step-num {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 20px;
    height: 20px;
    background: #151515;
    border: 1px solid #252525;
    color: var(--accent);
    font-size: 10px;
    flex-shrink: 0;
    border-radius: 50%;
    font-family: 'JetBrains Mono', monospace;
}

/* OSINT section */
.osint-buttons {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.osint-btn {
    display: flex;
    align-items: center;
    gap: 12px;
    background: #131313;
    color: #bbb;
    border: 1px solid #1e1e1e;
    padding: 12px 15px;
    cursor: pointer;
    font-size: 11px;
    font-family: 'JetBrains Mono', monospace;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    transition: all 0.15s;
    border-radius: 6px;
}

.osint-btn:hover {
    background: #1a1a1a;
    border-color: #333;
    color: #fff;
}

.osint-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    background: #0e0e0e;
    border: 1px solid #2a2a2a;
    font-size: 12px;
    font-weight: bold;
    color: var(--accent);
    border-radius: 6px;
}

.osint-info {
    font-size: 10px;
    color: #555;
    line-height: 1.6;
}

.osint-info p {
    margin-bottom: 8px;
}

.osint-info ul {
    margin: 8px 0;
    padding-left: 20px;
}

.osint-info li {
    margin-bottom: 4px;
    color: #777;
}

.osint-note {
    color: #444;
    font-style: italic;
    border-top: 1px solid #1a1a1a;
    padding-top: 10px;
    margin-top: 10px;
}

/* Screen size warning */
.screen-size-warning {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: #0a0a0a;
    z-index: 10000;
    align-items: center;
    justify-content: center;
}

.screen-size-warning.visible {
    display: flex;
}

.warning-content {
    text-align: center;
    padding: 40px;
    max-width: 500px;
}

.warning-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    background: #1a1a1a;
    border: 2px solid #555;
    border-radius: 12px;
    color: #999;
    font-size: 28px;
    font-weight: bold;
    margin-bottom: 24px;
}

.warning-content h2 {
    font-family: 'Inter', sans-serif;
    font-size: 18px;
    font-weight: 600;
    letter-spacing: 1px;
    color: #ddd;
    margin-bottom: 20px;
    text-transform: uppercase;
}

.warning-content p {
    font-size: 12px;
    color: #777;
    line-height: 1.6;
    margin-bottom: 10px;
}

.warning-content .current-size {
    color: #aaa;
    font-family: 'JetBrains Mono', monospace;
}

.warning-content .suggestion {
    color: #444;
    font-size: 11px;
    margin-top: 20px;
}

/* Caption styles */
.caption-input {
    width: 100%;
    padding: 10px 12px;
    background: #131313;
    border: 1px solid #222;
    color: #ddd;
    font-family: 'JetBrains Mono', monospace;
    font-size: 12px;
    border-radius: 6px;
    transition: border-color 0.15s;
}

.caption-input:focus {
    outline: none;
    border-color: var(--accent-dim);
}

.panel-btn.primary {
    background: var(--accent-bg);
    border-color: var(--accent-dim);
    color: #fff;
}

.panel-btn.primary:hover {
    background: var(--accent-bg-hover);
    border-color: var(--accent);
}

/* Tab button tweaks */
.tab-btn.active {
    background: rgba(120, 224, 48, 0.06);
}

/* Select input improvements */
.select-input {
    border-radius: 6px;
    transition: border-color 0.15s;
}

/* Section reset button improvements */
.section-reset-btn {
    border-radius: 6px;
    transition: all 0.15s;
}

/* Slider track styling */
input[type="range"] {
    -webkit-appearance: none;
    appearance: none;
    background: transparent;
}

input[type="range"]::-webkit-slider-runnable-track {
    height: 3px;
    background: #1e1e1e;
    border-radius: 2px;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 14px;
    height: 14px;
    background: #333;
    border: 2px solid #555;
    border-radius: 50%;
    margin-top: -6px;
    cursor: pointer;
    transition: all 0.15s;
}

input[type="range"]::-webkit-slider-thumb:hover {
    background: #444;
    border-color: #888;
    transform: scale(1.1);
}

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

/* Color input improvements */
input[type="color"] {
    border-radius: 6px;
    cursor: pointer;
}

input[type="color"]:hover {
    border-color: #3a3a3a;
}

/* Hash value styling */
.hash-value {
    font-size: 9px;
    word-break: break-all;
    font-family: 'JetBrains Mono', monospace;
    letter-spacing: 0.5px;
    color: var(--accent);
    cursor: pointer;
}

.hash-value:hover {
    text-decoration: underline;
    color: #ccc;
}

/* Text input styling */
.text-input {
    width: 100%;
    padding: 8px 12px;
    background: #131313;
    border: 1px solid #222;
    color: #ddd;
    font-family: 'JetBrains Mono', monospace;
    font-size: 11px;
    border-radius: 6px;
    transition: border-color 0.15s;
}

.text-input:focus {
    outline: none;
    border-color: var(--accent-dim);
}

/* History controls */
.history-controls {
    display: flex;
    gap: 8px;
    margin-bottom: 12px;
}

.history-controls .panel-btn {
    flex: 1;
}

.history-list {
    max-height: 200px;
    overflow-y: auto;
    background: #0e0e0e;
    border: 1px solid #1a1a1a;
    border-radius: 6px;
    padding: 8px;
}

.history-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 7px 10px;
    font-size: 10px;
    color: #777;
    border-bottom: 1px solid #151515;
    cursor: pointer;
    border-radius: 4px;
    transition: all 0.1s;
}

.history-item:last-child {
    border-bottom: none;
}

.history-item:hover {
    background: #151515;
    color: #ccc;
}

.history-item.current {
    color: var(--accent);
    background: rgba(120, 224, 48, 0.08);
}

.history-item .history-index {
    color: #444;
    font-size: 9px;
    min-width: 20px;
    font-family: 'JetBrains Mono', monospace;
}

/* Panel button disabled state */
.panel-btn:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

.panel-btn:disabled:hover {
    background: #131313;
    border-color: #1e1e1e;
    color: #777;
}

/* Help Modal */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.85);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: fadeIn 0.2s ease;
    backdrop-filter: blur(4px);
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideIn {
    from { opacity: 0; transform: translateY(-10px) scale(0.98); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}

.modal-content {
    background: #111;
    border: 1px solid #222;
    max-width: 600px;
    max-height: 80vh;
    overflow-y: auto;
    animation: slideIn 0.25s ease;
    border-radius: 12px;
}

.help-modal {
    width: 90%;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 20px;
    border-bottom: 1px solid #1e1e1e;
    background: #0e0e0e;
    border-radius: 12px 12px 0 0;
}

.modal-header h2 {
    font-family: 'Inter', sans-serif;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 1px;
    color: var(--accent);
}

.modal-close {
    background: none;
    border: none;
    color: #555;
    font-size: 22px;
    cursor: pointer;
    padding: 0;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 6px;
    transition: all 0.15s;
}

.modal-close:hover {
    color: #fff;
    background: #1a1a1a;
}

.modal-body {
    padding: 20px;
}

.help-section {
    margin-bottom: 24px;
}

.help-section:last-child {
    margin-bottom: 0;
}

.help-section h3 {
    font-size: 10px;
    font-weight: 500;
    letter-spacing: 1.5px;
    color: #555;
    margin-bottom: 12px;
    padding-bottom: 8px;
    border-bottom: 1px solid #1a1a1a;
    font-family: 'JetBrains Mono', monospace;
}

.help-section p {
    font-size: 11px;
    color: #888;
    line-height: 1.6;
}

.help-grid {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 8px 16px;
    font-size: 11px;
}

.help-grid kbd {
    background: #151515;
    border: 1px solid #252525;
    padding: 3px 8px;
    font-family: 'JetBrains Mono', monospace;
    color: var(--accent);
    font-size: 10px;
    border-radius: 4px;
}

.help-grid span:nth-child(even) {
    color: #777;
}

/* Hidden state warning banners */
.hidden-warning {
    background: #1a1515;
    border: 1px solid #332222;
    color: #c88;
    padding: 10px 14px;
    margin-bottom: 16px;
    font-size: 10px;
    letter-spacing: 0.8px;
    display: flex;
    align-items: center;
    gap: 8px;
    border-radius: 6px;
    font-family: 'JetBrains Mono', monospace;
}

.hidden-warning svg {
    width: 14px;
    height: 14px;
    flex-shrink: 0;
}

/* Color picker result hidden when picker not active */
#colorPickerResult.picker-inactive {
    display: none !important;
}

/* ===== URL INPUT ===== */
.header-url-group {
    display: flex;
    align-items: center;
    gap: 2px;
}

.header-url-input {
    width: 160px;
    background: #131313;
    border: 1px solid #252525;
    color: #ccc;
    padding: 6px 10px;
    font-size: 10px;
    font-family: 'JetBrains Mono', 'Courier New', monospace;
    font-weight: 500;
    border-radius: 6px 0 0 6px;
    transition: border-color 0.15s;
    letter-spacing: 0.8px;
}

.header-url-input:focus {
    outline: none;
    border-color: var(--accent-dim);
}

.header-url-input::placeholder {
    color: #444;
}

.header-url-group .header-btn {
    border-radius: 0 6px 6px 0;
    border-left: none;
}

/* ===== COLOR PALETTE ===== */
.color-palette {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.palette-swatch {
    position: relative;
    width: 100%;
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 6px 8px;
    background: #0e0e0e;
    border: 1px solid #1e1e1e;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.15s;
}

.palette-swatch:hover {
    border-color: #3a3a3a;
    background: #151515;
}

.palette-color {
    width: 24px;
    height: 24px;
    border-radius: 4px;
    border: 1px solid #333;
    flex-shrink: 0;
}

.palette-info {
    display: flex;
    flex-direction: column;
    gap: 2px;
    flex: 1;
    min-width: 0;
}

.palette-hex {
    font-size: 10px;
    color: var(--accent);
    font-family: 'JetBrains Mono', monospace;
    letter-spacing: 0.5px;
}

.palette-percent {
    font-size: 9px;
    color: #555;
    font-family: 'JetBrains Mono', monospace;
}

/* ===== MEASUREMENT TOOL ===== */
.measure-result {
    background: #0e0e0e;
    border: 1px solid #1e1e1e;
    border-radius: 6px;
    padding: 10px 12px;
}

.measure-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 4px 0;
    border-bottom: 1px solid #151515;
}

.measure-row:last-child {
    border-bottom: none;
}

.measure-label {
    font-size: 10px;
    color: #555;
    font-family: 'JetBrains Mono', monospace;
    letter-spacing: 0.8px;
    text-transform: uppercase;
}

.measure-value {
    font-size: 11px;
    color: var(--accent);
    font-family: 'JetBrains Mono', monospace;
    letter-spacing: 0.5px;
}

/* ===== OCR ===== */
.ocr-progress {
    margin-top: 10px;
}

.ocr-progress-bar {
    width: 100%;
    height: 4px;
    background: #1e1e1e;
    border-radius: 2px;
    overflow: hidden;
    margin-bottom: 6px;
}

.ocr-progress-fill {
    width: 0%;
    height: 100%;
    background: var(--accent);
    border-radius: 2px;
    transition: width 0.2s ease;
}

.ocr-progress-text {
    font-size: 9px;
    color: #555;
    font-family: 'JetBrains Mono', monospace;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

.ocr-result {
    margin-top: 12px;
    background: #0e0e0e;
    border: 1px solid #1e1e1e;
    border-radius: 6px;
    overflow: hidden;
}

.ocr-result-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 12px;
    background: #111;
    border-bottom: 1px solid #1a1a1a;
    font-size: 10px;
    color: #555;
    letter-spacing: 1px;
    font-family: 'JetBrains Mono', monospace;
}

.ocr-copy-btn {
    background: #161616;
    color: #777;
    border: 1px solid #252525;
    padding: 4px 10px;
    cursor: pointer;
    font-size: 9px;
    font-family: 'JetBrains Mono', monospace;
    letter-spacing: 0.8px;
    border-radius: 4px;
    transition: all 0.15s;
}

.ocr-copy-btn:hover {
    background: #1e1e1e;
    border-color: #3a3a3a;
    color: #ccc;
}

.ocr-text {
    padding: 12px;
    font-size: 11px;
    color: #ccc;
    font-family: 'JetBrains Mono', monospace;
    white-space: pre-wrap;
    word-wrap: break-word;
    max-height: 200px;
    overflow-y: auto;
    margin: 0;
    line-height: 1.5;
}

.ocr-confidence {
    padding: 6px 12px;
    font-size: 9px;
    color: #444;
    font-family: 'JetBrains Mono', monospace;
    letter-spacing: 0.5px;
    border-top: 1px solid #1a1a1a;
}