/* Dark theme (always used for app UI) */
:root {
    --bg-primary: #1a1a1a;
    --bg-secondary: #2d2d2d;
    --bg-tertiary: #3d3d3d;
    --text-primary: #f0f0f0;
    --text-secondary: #a0a0a0;
    --border-color: #444;
    --accent-color: #5ba0e8;
    --accent-hover: #4a90d9;
    --success-color: #34c759;
    --drop-zone-bg: #1e3a5f;
    --drop-zone-border: #5ba0e8;
}

/* ASCII output background variants */
.ascii-container.bg-dark {
    background: #0d0d0d;
}

.ascii-container.bg-light {
    background: #ffffff;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    min-height: 100dvh;
    padding: 20px;
}

.container {
    margin: 0 auto;
    width: 100%;
}

header {
    text-align: center;
    margin-bottom: 30px;
}

.header-row {
    display: flex;
    align-items: center;
    justify-content: center;
}

header h1 {
    font-size: 2rem;
    margin-bottom: 0;
}

header p {
    color: var(--text-secondary);
    margin-top: 8px;
}

.main-content {
    display: grid;
    grid-template-columns: 350px 1fr;
    gap: 24px;
    align-items: start;
    min-height: calc(100vh - 140px);
    min-height: calc(100dvh - 140px);
}

/* Hidden on desktop */
.mobile-panel-close {
    display: none;
}

@media (max-width: 900px) {
    .main-content {
        grid-template-columns: 1fr;
    }
}

/* Sidebar / Controls */
.controls {
    background: var(--bg-secondary);
    border-radius: 12px;
    padding: 20px;
    height: fit-content;
    max-height: calc(100vh - 140px);
    max-height: calc(100dvh - 140px);
    overflow-y: auto;
    scrollbar-width: thin;
    scrollbar-color: transparent transparent;
}

.controls:hover {
    scrollbar-color: var(--border-color) transparent;
}

.controls::-webkit-scrollbar {
    width: 6px;
}

.controls::-webkit-scrollbar-track {
    background: transparent;
}

.controls::-webkit-scrollbar-thumb {
    background: transparent;
    border-radius: 3px;
}

.controls:hover::-webkit-scrollbar-thumb {
    background: var(--border-color);
}

.controls::-webkit-scrollbar-thumb:hover {
    background: var(--text-secondary);
}

.control-section {
    margin-bottom: 8px;
}

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

.control-section h3 {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-secondary);
    margin-bottom: 12px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    user-select: none;
    /* Pill background style */
    background: var(--bg-tertiary);
    padding: 6px 12px;
    border-radius: 20px;
    margin-left: -12px;
    margin-right: -12px;
}

.control-section h3::after {
    content: '▼';
    font-size: 0.7rem;
    transition: transform 0.2s ease;
}

.control-section.collapsed h3 {
    margin-bottom: 0;
}

.control-section.collapsed h3::after {
    transform: rotate(-90deg);
}

.control-section .section-content {
    transition: opacity 0.2s ease;
    padding: 12px;
    background: var(--bg-primary);
    border-radius: 8px;
    margin-top: 8px;
}

.control-section.collapsed .section-content {
    display: none;
}

/* GitHub link */
.github-link {
    position: absolute;
    top: 20px;
    right: 20px;
    color: var(--text-primary);
    opacity: 0.7;
    transition: opacity 0.2s;
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.9rem;
    text-decoration: none;
}

.github-link:hover {
    opacity: 1;
}

/* Color inputs */
input[type="color"] {
    width: 32px;
    height: 24px;
    padding: 0;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    cursor: pointer;
    background: var(--bg-primary);
}

/* Drop Zone */
.drop-zone {
    border: 2px dashed var(--border-color);
    border-radius: 8px;
    padding: 24px 16px;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s ease;
    background: var(--bg-primary);
}

.drop-zone:hover,
.drop-zone.drag-over {
    border-color: var(--drop-zone-border);
    background: var(--drop-zone-bg);
}

.drop-zone-icon {
    font-size: 2rem;
    margin-bottom: 8px;
}

.drop-zone-text {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.drop-zone-text strong {
    color: var(--accent-color);
}

/* Desktop: show "Drop or paste", hide "Tap to select" */
.drop-zone-desktop {
    display: inline;
}
.drop-zone-mobile {
    display: none;
}

/* Mobile: show "Tap to select", hide "Drop or paste" */
@media (hover: none) and (pointer: coarse) {
    .drop-zone-desktop {
        display: none;
    }
    .drop-zone-mobile {
        display: inline;
    }
}

#file-input {
    display: none;
}

/* Custom Context Menu */
.context-menu {
    display: none;
    position: fixed;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    z-index: 3000;
    min-width: 140px;
    padding: 4px 0;
}

.context-menu.show {
    display: block;
}

.context-menu-item {
    display: block;
    width: 100%;
    padding: 8px 12px;
    border: none;
    background: none;
    color: var(--text-primary);
    font-size: 0.9rem;
    text-align: left;
    cursor: pointer;
    transition: background 0.1s;
}

.context-menu-item:hover {
    background: var(--bg-tertiary);
}

/* URL Input */
.url-input-group {
    display: flex;
    gap: 8px;
    margin-top: 12px;
}

.url-input-group input {
    flex: 1;
    padding: 10px 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 0.9rem;
    background: var(--bg-primary);
    color: var(--text-primary);
}

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

.btn {
    padding: 10px 16px;
    border: none;
    border-radius: 6px;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.2s ease;
    font-weight: 500;
}

.btn-primary {
    background: var(--accent-color);
    color: white;
}

.btn-primary:hover {
    background: var(--accent-hover);
}

.btn-primary.recording {
    background: #dc3545;
    animation: pulse-recording 1s infinite;
}

@keyframes pulse-recording {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

.btn-secondary {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.btn-secondary:hover {
    background: var(--border-color);
}

.btn-success {
    background: var(--success-color);
    color: white;
}

.btn-small {
    padding: 6px 10px;
    font-size: 0.8rem;
}

.btn-block {
    width: 100%;
}

/* Settings */
.setting-row {
    margin-bottom: 16px;
}

.setting-row:last-child {
    margin-bottom: 0;
}

.setting-row label {
    display: block;
    font-size: 0.9rem;
    margin-bottom: 6px;
    color: var(--text-primary);
}

.setting-row input[type="range"] {
    width: 100%;
    margin-bottom: 4px;
    -webkit-appearance: none;
    appearance: none;
    height: 6px;
    background: var(--bg-tertiary);
    border-radius: 3px;
    cursor: pointer;
}

.setting-row input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 16px;
    height: 16px;
    background: var(--accent-color);
    border-radius: 50%;
    cursor: pointer;
    border: none;
    transition: transform 0.1s ease;
}

.setting-row input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.1);
}

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

.setting-row input[type="range"]::-moz-range-track {
    background: var(--bg-tertiary);
    height: 6px;
    border-radius: 3px;
}

.setting-row input[type="range"]:focus {
    outline: none;
}

.setting-row.disabled {
    opacity: 0.5;
    pointer-events: none;
}

.setting-row select {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 0.9rem;
    background: var(--bg-primary);
    color: var(--text-primary);
    cursor: pointer;
}

.setting-row select:focus {
    outline: none;
    border-color: var(--accent-color);
}

.setting-value {
    font-size: 0.85rem;
    color: var(--text-secondary);
    text-align: right;
}

.setting-row input[type="number"],
.setting-row input[type="text"] {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 0.9rem;
    background: var(--bg-primary);
    color: var(--text-primary);
}

.checkbox-row {
    display: flex;
    align-items: center;
    gap: 8px;
}

.checkbox-row input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
    -webkit-appearance: none;
    appearance: none;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    position: relative;
    transition: all 0.15s ease;
}

.checkbox-row input[type="checkbox"]:checked {
    background: var(--accent-color);
    border-color: var(--accent-color);
}

.checkbox-row input[type="checkbox"]:checked::after {
    content: '✓';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    font-size: 12px;
    font-weight: bold;
}

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

/* Style all checkboxes in controls (including inline auto checkboxes) */
.controls input[type="checkbox"] {
    width: 14px;
    height: 14px;
    cursor: pointer;
    -webkit-appearance: none;
    appearance: none;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 3px;
    position: relative;
    transition: all 0.15s ease;
    flex-shrink: 0;
}

.controls input[type="checkbox"]:checked {
    background: var(--accent-color);
    border-color: var(--accent-color);
}

.controls input[type="checkbox"]:checked::after {
    content: '✓';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    font-size: 10px;
    font-weight: bold;
}

.controls input[type="checkbox"]:focus {
    outline: none;
    border-color: var(--accent-color);
}

/* Override for checkbox-row (larger checkboxes) */
.checkbox-row input[type="checkbox"] {
    width: 18px;
    height: 18px;
    border-radius: 4px;
}

.checkbox-row input[type="checkbox"]:checked::after {
    font-size: 12px;
}

.inline-group {
    display: flex;
    gap: 8px;
    align-items: center;
}

.inline-group input[type="number"] {
    width: 80px;
}

.inline-group .checkbox-row {
    flex: 1;
}

/* Copy Buttons */
.copy-buttons {
    display: flex;
    gap: 8px;
}

.copy-buttons .btn {
    flex: 1;
}

/* Output Area */
.output-area {
    background: var(--bg-secondary);
    border-radius: 12px;
    padding: 20px;
    min-height: 500px;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    align-self: stretch;
}

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

.output-header h2 {
    font-size: 1.1rem;
}

.output-info {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* Mobile playback controls - hidden on desktop */
.mobile-playback-controls {
    display: none;
}

.ascii-container {
    flex: 1;
    border-radius: 8px;
    padding: 16px;
    overflow: auto;
    position: relative;
}

#ascii-output {
    white-space: pre;
    letter-spacing: 0;
}

.placeholder-message {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    color: var(--text-secondary);
}

.placeholder-message .icon {
    font-size: 3rem;
    margin-bottom: 12px;
}

/* Preview */
.preview-section {
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid var(--border-color);
}

#image-preview {
    max-width: 100%;
    max-height: 90px;
    border-radius: 6px;
    display: none;
}

#video-preview {
    max-width: 100%;
    max-height: 90px;
    border-radius: 4px;
    display: none;
}

#no-preview {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* Webcam */
#video-preview.webcam-mirrored {
    transform: scaleX(-1);
}

.webcam-active #webcam-start-btn {
    display: none;
}

.webcam-active #webcam-stop-btn {
    display: inline-block !important;
}

/* Toast Notification */
.toast {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background: var(--success-color);
    color: white;
    padding: 12px 20px;
    border-radius: 8px;
    font-size: 0.9rem;
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.3s ease;
    z-index: 1000;
}

.toast.show {
    opacity: 1;
    transform: translateY(0);
}

/* Modal */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.6);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    backdrop-filter: blur(4px);
}

.modal-overlay.show {
    display: flex;
}

.modal {
    background: var(--bg-secondary);
    border-radius: 12px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
    max-width: 400px;
    width: 90%;
    animation: modalSlideIn 0.2s ease-out;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-20px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h3 {
    margin: 0;
    font-size: 1.1rem;
    color: var(--text-primary);
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0;
    line-height: 1;
    transition: color 0.2s;
}

.modal-close:hover {
    color: var(--text-primary);
}

.modal-body {
    padding: 20px;
}

.modal-body .setting-group {
    margin-bottom: 16px;
}

.modal-body .setting-group:last-child {
    margin-bottom: 0;
}

.modal-body .setting-group label {
    display: block;
    margin-bottom: 6px;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.modal-body .setting-group select {
    width: 100%;
    padding: 10px 12px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-primary);
    font-size: 0.9rem;
    cursor: pointer;
}

.modal-body .setting-group select:focus {
    outline: none;
    border-color: var(--accent-color);
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    padding: 16px 20px;
    border-top: 1px solid var(--border-color);
}

/* ========== Mobile Responsive Styles ========== */

/* Mobile toolbar - hidden on desktop */
.mobile-toolbar {
    display: none;
}

.mobile-panel-overlay {
    display: none;
}

.desktop-only {
    display: block;
}

/* Mobile breakpoint */
@media (max-width: 900px) {
    body {
        padding: 10px;
        height: 100vh;
        height: 100dvh;
        overflow: hidden;
        display: flex;
        flex-direction: column;
    }

    .container {
        display: flex;
        flex-direction: column;
        flex: 1;
        min-height: 0;
        overflow: hidden;
        width: 100%;
    }

    header {
        margin-bottom: 10px;
        flex-shrink: 0;
    }

    header h1 {
        font-size: 1.4rem;
    }

    .desktop-only {
        display: none;
    }

    /* Mobile toolbar */
    .mobile-toolbar {
        display: flex;
        align-items: center;
        gap: 6px;
        padding: 8px;
        background: var(--bg-secondary);
        border-radius: 8px;
        margin-bottom: 10px;
        overflow-x: auto;
        flex-shrink: 0;
    }

    .mobile-preset-select {
        flex: 1;
        min-width: 100px;
        max-width: 140px;
        padding: 8px 10px;
        background: var(--bg-tertiary);
        border: 1px solid var(--border-color);
        border-radius: 6px;
        color: var(--text-primary);
        font-size: 0.85rem;
        cursor: pointer;
    }

    .mobile-toolbar-btn {
        display: flex;
        align-items: center;
        justify-content: center;
        width: 40px;
        height: 40px;
        padding: 0;
        background: var(--bg-tertiary);
        border: 1px solid var(--border-color);
        border-radius: 8px;
        color: var(--text-primary);
        font-size: 1.1rem;
        cursor: pointer;
        flex-shrink: 0;
        transition: background 0.2s, border-color 0.2s;
    }

    .mobile-toolbar-btn:hover,
    .mobile-toolbar-btn.active {
        background: var(--bg-primary);
        border-color: var(--accent-color);
    }

    .mobile-toolbar-btn .icon {
        line-height: 1;
    }

    /* Hide sidebar on mobile */
    .main-content {
        display: flex;
        flex-direction: column;
        flex: 1;
        min-height: 0;
        overflow: hidden;
    }

    .controls {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 35%;
        z-index: 1000;
        background: rgba(45, 45, 45, 0.95);
        backdrop-filter: blur(8px);
        -webkit-backdrop-filter: blur(8px);
        overflow-y: auto;
        padding: 20px;
        border-bottom-left-radius: 16px;
        border-bottom-right-radius: 16px;
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    }

    .controls.mobile-panel-open {
        display: block;
    }

    /* Hide all sections by default when sidebar is open on mobile */
    .controls.mobile-panel-open .control-section {
        display: none;
    }

    /* Show only the active section */
    .controls.mobile-panel-open .control-section.mobile-active {
        display: block;
    }

    /* Mobile panel close button - aligned with heading */
    .mobile-panel-close {
        position: absolute;
        top: 18px;
        right: 20px;
        width: 28px;
        height: 28px;
        background: var(--bg-tertiary);
        border: 1px solid var(--border-color);
        border-radius: 50%;
        color: var(--text-primary);
        font-size: 0.9rem;
        cursor: pointer;
        z-index: 1001;
        display: none;
        align-items: center;
        justify-content: center;
    }

    .controls.mobile-panel-open .mobile-panel-close,
    .mobile-panel-close.visible {
        display: flex;
    }

    /* Hide toggler arrow on mobile - use X button instead */
    .control-section h3::after {
        display: none;
    }

    /* Mobile panel header */
    .controls.mobile-panel-open .control-section.mobile-active h3 {
        font-size: 1.1rem;
        margin-bottom: 16px;
        padding-bottom: 12px;
        padding-right: 40px;
        cursor: default;
        border-bottom: 1px solid var(--border-color);
    }

    /* Mobile media input row - side by side layout */
    .media-input-row {
        display: flex;
        gap: 12px;
        max-height: 120px;
        align-items: stretch;
    }

    .media-input-row .drop-zone {
        flex: 1;
        min-width: 0;
        padding: 16px 12px;
    }

    .media-input-row .preview-section {
        margin: 0;
        padding: 0;
        border: none;
        flex-shrink: 0;
        display: none;
        align-items: center;
        justify-content: center;
    }

    /* Show preview section when has-preview class is set */
    .media-input-row.has-preview .preview-section {
        display: flex;
    }

    .media-input-row #image-preview,
    .media-input-row #video-preview {
        max-height: 120px;
        max-width: 150px;
        width: auto;
        height: auto;
        object-fit: contain;
        border-radius: 6px;
    }

    .media-input-row #no-preview {
        display: none;
    }

    /* Expand section content on mobile */
    .controls.mobile-panel-open .control-section.mobile-active .section-content {
        display: block !important;
        max-height: none !important;
    }

    /* Panel overlay */
    .mobile-panel-overlay {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(0, 0, 0, 0.5);
        z-index: 999;
        display: none;
    }

    .mobile-panel-overlay.visible {
        display: block;
    }

    /* Output area takes remaining space on mobile */
    .output-area {
        flex: 1;
        min-height: 0;
        display: flex;
        flex-direction: column;
        overflow: hidden;
    }

    .output-header {
        flex-shrink: 0;
    }

    .output-header h2 {
        font-size: 1rem;
    }

    /* Mobile playback controls */
    .mobile-playback-controls {
        display: flex;
        gap: 6px;
    }

    .mobile-playback-controls .btn {
        padding: 6px 12px;
        font-size: 0.85rem;
    }

    /* Bottom-align ASCII output on mobile for visibility during settings */
    .ascii-container {
        flex: 1;
        min-height: 0;
        display: flex;
        flex-direction: column;
        justify-content: flex-end;
        overflow: auto;
    }

    /* Smaller buttons on mobile */
    .copy-buttons {
        flex-wrap: wrap;
    }

    .copy-buttons .btn {
        font-size: 0.8rem;
        padding: 8px 12px;
    }
}