/* =========================================
   1. VARIABLES & THEME
   ========================================= */
:root {
    --color-primary-50: #eef2ff;
    --color-primary-100: #e0e7ff;
    --color-primary-500: #6366f1;
    --color-primary-600: #4f46e5;
    --color-primary-700: #4338ca;

    --color-slate-50: #f8fafc;
    --color-slate-100: #f1f5f9;
    --color-slate-200: #e2e8f0;
    --color-slate-300: #cbd5e1;
    --color-slate-400: #94a3b8;
    --color-slate-500: #64748b;
    --color-slate-600: #475569;
    --color-slate-700: #334155;
    --color-slate-800: #1e293b;
    --color-slate-900: #0f172a;

    --color-white: #ffffff;
    --color-danger: #ef4444;
    --color-success: #22c55e;
    --bg-time-highlight: rgba(251, 191, 36, 0.25);

    --bg-app: var(--color-slate-50);
    --bg-card: var(--color-white);
    --bg-header: rgba(255, 255, 255, 0.85);
    --bg-input-group: var(--color-slate-100);
    --bg-checkbox: var(--color-slate-100);
    --bg-checkbox-hover: var(--color-slate-200);
    --border-color: var(--color-slate-200);
    --border-color-hover: var(--color-slate-300);

    --text-main: var(--color-slate-800);
    --text-muted: var(--color-slate-500);
    --text-light: var(--color-slate-50);

    --shadow-color: rgb(0 0 0 / 0.1);

    --font-sans: "gg sans", "Noto Sans", "Helvetica Neue", Helvetica, Arial, sans-serif;
    --font-mono: "gg sans mono", "gg mono", "Source Code Pro", Consolas, "Andale Mono WT", "Andale Mono", "Lucida Console", "Lucida Sans Typewriter", "DejaVu Sans Mono", "Bitstream Vera Sans Mono", "Liberation Mono", "Nimbus Mono L", Monaco, "Courier New", Courier, "Noto Sans", "Noto Sans TC", "Microsoft JhengHei", "Meiryo", monospace;

    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-full: 9999px;

    --shadow-sm: 0 1px 2px 0 var(--shadow-color);
    --shadow-md: 0 4px 6px -1px var(--shadow-color), 0 2px 4px -2px var(--shadow-color);
    --shadow-lg: 0 10px 15px -3px var(--shadow-color), 0 4px 6px -4px var(--shadow-color);

    --layout-gap: 1.5rem;
    --header-height: 64px;
    --controls-height: 0px;
    --collapsed-sidebar-width: 48px;
}

@media (min-width: 768px) {
    :root {
        --layout-gap: 2rem;
    }
}

[data-theme="dark"] {
    --bg-app: #0f172a;
    --bg-card: #1e293b;
    --bg-header: rgba(30, 41, 59, 0.85);
    --bg-input-group: #334155;
    --bg-checkbox: #334155;
    --bg-checkbox-hover: #475569;
    --border-color: #334155;
    --border-color-hover: #475569;

    --text-main: #f1f5f9;
    --text-muted: #94a3b8;
    --text-light: #f8fafc;

    --color-slate-50: #1e293b;
    --color-slate-100: #334155;
    --color-slate-200: #475569;
    --color-slate-500: #94a3b8;
    --color-slate-700: #e2e8f0;
    --color-slate-800: #f8fafc;

    --shadow-color: rgb(0 0 0 / 0.3);
}

/* =========================================
   2. RESET & BASE
   ========================================= */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    -webkit-tap-highlight-color: transparent;
}

html,
body {
    height: 100%;
}

body {
    font-family: var(--font-sans);
    background-color: var(--bg-app);
    background-image:
        radial-gradient(circle at 10% 20%, rgba(99, 102, 241, 0.03) 0%, transparent 20%),
        radial-gradient(circle at 90% 80%, rgba(99, 102, 241, 0.03) 0%, transparent 20%);
    color: var(--text-main);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    min-height: 100svh;
    height: 100dvh;
    overflow: hidden;
}

body.header-collapsed {
    --header-height: 0px;
}

[data-theme="dark"] body {
    background-image:
        radial-gradient(circle at 50% 0%, rgba(99, 102, 241, 0.08) 0%, transparent 50%);
}

/* =========================================
   3. LAYOUT
   ========================================= */
.app-container {
    display: flex;
    flex-direction: column;
    height: 100%;
    max-width: 1400px;
    margin: 0 auto;
    position: relative;
}

.app-header {
    height: var(--header-height);
    background-color: var(--bg-header);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 50;
    flex-shrink: 0;
    overflow: hidden;
    width: 100vw;
    margin-left: calc(50% - 50vw);
    margin-right: calc(50% - 50vw);
    transition: height 0.3s, background-color 0.3s, border-color 0.3s;
}

body.header-collapsed .app-header {
    border-bottom-color: transparent;
}

.header-content {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 1.5rem;
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
}

.header-title-group {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--color-primary-600);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

[data-theme="dark"] .header-title-group {
    color: var(--color-primary-500);
}

.header-icon {
    width: 28px;
    height: 28px;
    filter: drop-shadow(0 2px 4px rgba(99, 102, 241, 0.2));
}

h1 {
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: -0.025em;
    color: var(--text-main);
}

.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    padding: 1.5rem;
    gap: var(--layout-gap);
    overflow: hidden;
    height: calc(100vh - var(--header-height));
    position: relative;
}

@media (min-width: 768px) {
    .main-content {
        padding: 2rem;
    }
}

@media (max-width: 640px) {
    :root {
        --layout-gap: 1rem;
    }

    .main-content {
        padding: 1rem;
        padding-bottom: calc(0.75rem + env(safe-area-inset-bottom));
    }

    div.editors-area {
        gap: 1rem;
    }

    .controls-panel {
        padding: 1rem;
    }

    .panel-header,
    .controls-header {
        min-height: 52px;
        padding: 0 1rem;
    }
}

/* =========================================
   4. COMPONENTS: CONTROLS
   ========================================= */
.controls-panel {
    background-color: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: 1.25rem;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    flex-shrink: 0;
    transition: box-shadow 0.2s, background-color 0.3s, border-color 0.3s;
    position: relative;
    display: flex;
    flex-direction: column;
}


.controls-header {
    display: none;
    user-select: none;
    min-height: 56px;
    padding: 0 1.25rem;
    background: var(--bg-app);
    border-bottom: 1px solid var(--border-color);
    font-weight: 600;
    color: var(--color-slate-700);
    align-items: center;
    justify-content: space-between;
    font-size: 0.85rem;
    gap: 0.5rem;
    width: 100%;
    transition: background-color 0.2s, border-color 0.3s;
    border-top-left-radius: var(--radius-lg);
    border-top-right-radius: var(--radius-lg);
}

.controls-toggle-label,
.editor-panel.collapsed .toggle-label {
    font-weight: 600;
    color: var(--color-slate-500);
}

[data-theme="dark"] .controls-header {
    background: var(--bg-input-group);
    color: var(--text-main);
}

[data-theme="dark"] .controls-collapsed .controls-header {
    background: var(--bg-card);
}

.controls-wrapper {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    flex: 1;
}

@media (min-width: 768px) {
    .controls-wrapper {
        flex-direction: row;
        align-items: center;
        justify-content: space-between;
    }
}

@media (max-width: 1023px) {
    .controls-header {
        display: flex;
    }

    .controls-panel {
        padding: 0;
    }

    .controls-wrapper {
        padding: 1.25rem;
    }

    .controls-panel.collapsed .controls-header {
        border-bottom: none;
        border-radius: var(--radius-lg);
    }
}

@media (min-width: 1024px) {
    .main-content.input-collapsed .controls-panel {
        flex-direction: row;
        align-items: stretch;
        padding: 0;
    }

    .main-content.input-collapsed .controls-header {
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 0.5rem;
        flex: 0 0 var(--collapsed-sidebar-width);
        width: var(--collapsed-sidebar-width);
        padding: 0.75rem 0;
        border-right: 1px solid var(--border-color);
        border-bottom: none;
        border-radius: var(--radius-lg) 0 0 var(--radius-lg);
    }

    .main-content.input-collapsed .controls-wrapper {
        padding: 1.25rem;
    }

    .main-content.input-collapsed .controls-toggle-label {
        writing-mode: vertical-rl;
        text-orientation: mixed;
        letter-spacing: 2px;
        font-size: 0.85rem;
    }
}

.control-group {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.number-input-group {
    display: flex;
    align-items: center;
    background: var(--bg-input-group);
    border-radius: var(--radius-md);
    padding: 4px;
    transition: background-color 0.3s;
}

.input-btn {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: none;
    background: transparent;
    border-radius: var(--radius-sm);
    cursor: pointer;
    color: var(--text-muted);
    transition: all 0.2s;
}


#seconds-input {
    width: 3rem;
    text-align: center;
    border: none;
    background: transparent;
    font-weight: 600;
    color: var(--text-main);
    font-size: 1rem;
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: textfield;
}

#seconds-input:focus {
    outline: none;
}

#seconds-input::-webkit-outer-spin-button,
#seconds-input::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

.slider {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    max-width: 240px;
    height: 6px;
    background: var(--border-color);
    border-radius: var(--radius-full);
    outline: none;
    cursor: pointer;
}

.slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--color-primary-600);
    border: 3px solid var(--bg-card);
    box-shadow: 0 0 0 1px var(--color-primary-100), var(--shadow-sm);
    cursor: pointer;
    transition: transform 0.15s, box-shadow 0.15s;
}


.options-group {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

@media (min-width: 640px) {
    .options-group {
        margin-left: auto;
    }
}

.checkbox-wrapper {
    position: relative;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-main);
    cursor: pointer;
    background-color: var(--bg-checkbox);
    padding: 0.5rem 0.75rem;
    border-radius: var(--radius-md);
    border: 1px solid transparent;
    transition: all 0.2s cubic-bezier(0.2, 0, 0, 1);
    user-select: none;
}


.checkbox-wrapper input[type="checkbox"] {
    appearance: none;
    width: 1.15em;
    height: 1.15em;
    border: 1.5px solid var(--color-slate-400);
    border-radius: 4px;
    background-color: var(--color-white);
    display: grid;
    place-content: center;
    flex-shrink: 0;
    transition: all 0.2s;
    margin: 0;
}

.checkbox-wrapper input[type="checkbox"]::before {
    content: "";
    width: 0.65em;
    height: 0.65em;
    transform: scale(0);
    transition: 0.1s transform ease-in-out;
    box-shadow: inset 1em 1em white;
    transform-origin: center;
    clip-path: polygon(14% 44%, 0 65%, 50% 100%, 100% 16%, 80% 0%, 43% 62%);
}

.checkbox-wrapper input[type="checkbox"]:checked {
    background-color: var(--color-primary-600);
    border-color: var(--color-primary-600);
}

.checkbox-wrapper input[type="checkbox"]:checked::before {
    transform: scale(1);
}

.checkbox-wrapper:has(input:checked) {
    background-color: var(--color-primary-50);
    color: var(--color-primary-700);
    border-color: var(--color-primary-100);
}

.controls-panel.collapsed .controls-wrapper {
    display: none;
}

.checkbox-wrapper label {
    cursor: pointer;
}

.tooltip-container {
    position: relative;
    display: inline-flex;
    align-items: center;
    color: var(--color-slate-400);
    cursor: help;
    margin-left: -0.25rem;
}

.tooltip-icon {
    width: 18px;
    height: 18px;
    transition: color 0.2s;
}


.tooltip {
    position: absolute;
    bottom: 150%;
    right: 0;
    width: max-content;
    max-width: 250px;
    background: var(--color-slate-800);
    color: var(--bg-app);
    padding: 0.5rem 0.75rem;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    line-height: 1.4;
    text-align: left;
    white-space: normal;

    opacity: 0;
    visibility: hidden;
    --tooltip-offset-x: 0px;
    transform: translate(var(--tooltip-offset-x), 8px);
    transition: opacity 0.2s, visibility 0.2s, transform 0.2s;
    z-index: 100;
    pointer-events: none;
    box-shadow: var(--shadow-lg);
}

.tooltip::after {
    content: '';
    position: absolute;
    top: 100%;
    right: 8px;
    border-width: 6px;
    border-style: solid;
    border-color: var(--color-slate-800) transparent transparent transparent;
    /* Move arrow independently */
    transform: translateX(var(--tooltip-arrow-offset-x, 0px));
    transition: transform 0.2s;
}

.tooltip-container:hover .tooltip-icon {
    color: var(--color-primary-600);
}

.tooltip-container:hover .tooltip {
    opacity: 1;
    visibility: visible;
    transform: translate(var(--tooltip-offset-x), 0);
}


/* =========================================
   5. COMPONENTS: EDITORS
   ========================================= */
.editors-area {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    min-height: 0;
}

@media (min-width: 1024px) {
    .editors-area {
        flex-direction: row;
    }

    .editor-panel {
        flex: 1;
        width: 0;
    }
}

@media (max-width: 1023px) {
    .editor-panel {
        flex: 1 1 0;
        min-height: 0;
    }
}

[data-theme="dark"] .panel-header {
    color: var(--text-main);
}

.collapsible-header {
    cursor: pointer;
}


.panel-body {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-height: 200px;
    position: relative;
    overflow: hidden;
}

textarea {
    flex: 1;
    width: 100%;
    padding: 1.25rem;
    border: none;
    resize: none;
    font-family: var(--font-mono) !important;
    font-size: 0.9rem;
    color: var(--text-main);
    background: transparent;
}

textarea:focus {
    outline: none;
    background: var(--bg-app);
}

.dark-panel {
    background: #1e1e1e;
    border-color: #333;
}

.dark-header {
    background: #252526;
    border-bottom-color: #333;
    color: #cccccc;
}

.code-content {
    flex: 1;
    overflow: auto;
    min-height: 0;
    display: flex;
    flex-direction: column;
}

pre {
    margin: 0;
    flex: 1;
    display: flex;
}

code {
    flex: 1;
    padding: 1.25rem;
    font-family: var(--font-mono) !important;
    font-size: 0.9rem;
    color: #d4d4d4;
}

.time-highlight {
    background-color: var(--bg-time-highlight);
    border-radius: 4px;
    padding: 0 2px;
}

.hljs-keyword {
    color: #ff7b72 !important;
}

.hljs-number {
    color: #79c0ff !important;
}

.arrow-separator {
    display: none;
    color: var(--color-slate-300);
    align-self: center;
}

@media (min-width: 1024px) {
    .arrow-separator {
        display: flex;
    }
}

/* =========================================
   6. COLLAPSE SIDEBAR (Desktop)
   ========================================= */
.editor-panel.collapsed {
    flex: 0 0 auto;
}

@media (min-width: 1024px) {
    .editor-panel.collapsed {
        flex: 0 0 var(--collapsed-sidebar-width);
    }
}

.editor-panel.collapsed .panel-body {
    display: none;
}

.editor-panel.collapsed .panel-header {
    height: 100%;
    flex-direction: column;
    justify-content: center;
    padding: 1.5rem 0;
    gap: 1rem;
    background: var(--color-slate-50);
}

.editor-panel.collapsed .panel-header .header-title {
    display: none;
}

.toggle-wrapper {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--color-slate-500);
}

.toggle-label {
    font-size: 0.85rem;
    font-weight: 500;
}

.editor-panel.collapsed .toggle-wrapper {
    flex-direction: column;
    gap: 0.5rem;
}

.editor-panel.collapsed .toggle-label {
    writing-mode: vertical-rl;
    text-orientation: mixed;
    letter-spacing: 2px;
}

.chevron {
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    width: 24px;
    height: 24px;
    color: var(--color-slate-400);
}

.editor-panel.collapsed .chevron {
    transform: rotate(-90deg);
    margin-top: 0;
}

.controls-panel.collapsed .controls-header .chevron {
    transform: rotate(-90deg);
}

@media (min-width: 1024px) {
    .main-content.controls-collapsed .controls-panel {
        position: absolute;
        top: 2rem;
        left: 2rem;
        width: var(--collapsed-sidebar-width);
        height: var(--controls-height);
        padding: 0;
        z-index: 20;
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .main-content.controls-collapsed .controls-header {
        width: 100%;
        height: 100%;
        align-items: center;
        justify-content: center;
        padding: 0;
        border-right: none;
        border-bottom: none;
        border-radius: var(--radius-lg);
    }

    .main-content.controls-collapsed .editors-area {
        display: grid;
        grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
        grid-template-rows: calc(var(--controls-height) + var(--layout-gap)) minmax(0, 1fr);
        column-gap: 1.5rem;
        row-gap: 0;
    }

    .main-content.controls-collapsed.input-collapsed .editors-area {
        grid-template-columns: var(--collapsed-sidebar-width) minmax(0, 1fr);
    }

    .main-content.controls-collapsed .editor-panel {
        width: 100%;
    }

    .main-content.controls-collapsed #input-panel {
        grid-column: 1;
        grid-row: 2;
    }

    .main-content.controls-collapsed .arrow-separator {
        grid-column: 2;
        grid-row: 2;
        align-self: center;
    }

    .main-content.controls-collapsed .dark-panel {
        grid-column: 3;
        grid-row: 1 / span 2;
    }

    .main-content.controls-collapsed.input-collapsed .arrow-separator {
        display: none;
    }

    .main-content.controls-collapsed.input-collapsed .dark-panel {
        grid-column: 2;
    }
}

@media (max-width: 1023px) {

    .toggle-label {
        display: block;
    }

    .editor-panel.collapsed .toggle-wrapper {
        flex-direction: row;
        justify-content: space-between;
        width: 100%;
    }

    .editor-panel.collapsed .panel-header {
        align-items: center;
        justify-content: space-between;
        padding: 1rem 1.25rem;
        gap: 0.5rem;
    }

    .editor-panel.collapsed .toggle-label {
        writing-mode: horizontal-tb;
        text-orientation: initial;
        letter-spacing: 0;
    }

    .editor-panel.collapsed .chevron {
        transform: rotate(180deg);
    }

    .controls-panel.collapsed .controls-header .chevron {
        transform: rotate(180deg);
    }
}

/* =========================================
   7. UTILS & BUTTONS
   ========================================= */

.panel-header .header-title {
    display: inline-flex;
    align-items: center;
    flex-wrap: wrap;
}

.ocr-upload-btn {
    border: 1px solid #bfdbfe;
    background: #eff6ff;
    color: #86aaff;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    padding: 0.2rem 0.4rem;
    margin: auto 0.25rem;
    cursor: pointer;
    transition: background-color 0.2s, border-color 0.2s, color 0.2s;
}

[data-theme="dark"] .ocr-upload-btn {
    border-color: #1e3a8a;
    background: #172554;
    color: #bfdbfe;
}

.ocr-status {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-muted);
    margin-left: 0.5rem;
}

.ocr-status.is-loading {
    color: var(--color-primary-500);
}

.ocr-status.is-ready {
    color: var(--color-success);
}

.ocr-status.is-error {
    color: var(--color-danger);
}

.copy-btn {
    border: 1px solid var(--border-color);
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-muted);
    padding: 0.5rem 0.85rem;
    border-radius: var(--radius-md);
    font-size: 0.8rem;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}


.text-blue {
    color: #60a5fa;
}

.custom-scrollbar::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

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

.custom-scrollbar::-webkit-scrollbar-thumb {
    background: rgba(120, 120, 120, 0.3);
    border-radius: 4px;
    border: none;
}


.theme-toggle {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border-color);
    background: var(--bg-card);
    color: var(--color-slate-500);
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
    box-shadow: var(--shadow-sm);
    position: relative;
    overflow: hidden;
}

.fullscreen-toggle {
    width: 40px;
    height: 40px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border-color);
    background: var(--bg-card);
    color: var(--color-slate-500);
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
    box-shadow: var(--shadow-sm);
}


.fullscreen-toggle:active {
    transform: translateY(0);
}

.fullscreen-toggle .icon-exit {
    display: none;
}

.fullscreen-toggle.is-fullscreen .icon-enter {
    display: none;
}

.fullscreen-toggle.is-fullscreen .icon-exit {
    display: block;
}

[data-theme="dark"] .fullscreen-toggle {
    background: var(--bg-input-group);
    border-color: var(--border-color);
    color: #fbbf24;
}



.theme-toggle:active {
    transform: translateY(0);
}

[data-theme="dark"] .theme-toggle {
    background: var(--bg-input-group);
    border-color: var(--border-color);
    color: #fbbf24;
}

@media (hover: hover) and (pointer: fine) {
    .ocr-upload-btn:hover {
        background-color: #dbeafe;
        border-color: #93c5fd;
        color: #60a5fa;
    }

    [data-theme="dark"] .ocr-upload-btn:hover {
        background-color: #1e40af;
        border-color: #1d4ed8;
        color: #dbeafe;
    }

    .controls-panel:hover {
        box-shadow: var(--shadow-md);
    }

    .input-btn:hover {
        background-color: var(--bg-card);
        color: var(--color-primary-600);
        box-shadow: var(--shadow-sm);
    }

    .slider::-webkit-slider-thumb:hover {
        transform: scale(1.1);
        box-shadow: 0 0 0 4px var(--color-primary-100);
    }

    .checkbox-wrapper:hover {
        background-color: var(--bg-checkbox-hover);
        box-shadow: var(--shadow-sm);
        border-color: var(--border-color-hover);
    }


    .collapsible-header:hover {
        background-color: var(--bg-checkbox-hover);
    }

    .editor-panel.collapsed .panel-header:hover {
        background-color: var(--bg-checkbox-hover);
    }

    [data-theme="dark"] .collapsible-header:hover {
        background-color: var(--bg-input-group);
    }

    [data-theme="dark"] .editor-panel.collapsed .panel-header:hover {
        background-color: var(--bg-input-group);
    }

    .copy-btn:hover {
        background: var(--bg-checkbox-hover);
        color: var(--text-main);
        border-color: var(--border-color-hover);
    }

    .custom-scrollbar::-webkit-scrollbar-thumb:hover {
        background: rgba(120, 120, 120, 0.5);
    }

    .fullscreen-toggle:hover {
        background-color: var(--bg-checkbox-hover);
        color: var(--color-primary-600);
        transform: translateY(-1px);
        box-shadow: var(--shadow-md);
        border-color: var(--color-primary-100);
    }

    [data-theme="dark"] .fullscreen-toggle:hover {
        background-color: var(--color-slate-700);
        border-color: var(--color-slate-600);
        color: #fcd34d;
    }

    .theme-toggle:hover {
        background-color: var(--bg-checkbox-hover);
        color: var(--color-primary-600);
        transform: translateY(-1px);
        box-shadow: var(--shadow-md);
        border-color: var(--color-primary-100);
    }

    [data-theme="dark"] .theme-toggle:hover {
        background-color: var(--color-slate-700);
        border-color: var(--color-slate-600);
        color: #fcd34d;
    }

    .panel-header.dark-header .copy-btn:hover {
        border-color: #64748b;
        color: #f8fafc;
        background-color: rgba(255, 255, 255, 0.1);
    }
}

@media (hover: none) and (pointer: coarse) {
    .ocr-upload-btn:active {
        background-color: #bfdbfe;
        border-color: #60a5fa;
        color: #3b82f6;
    }

    [data-theme="dark"] .ocr-upload-btn:active {
        background-color: #1e293b;
        border-color: #1e3a8a;
        color: #bfdbfe;
    }

    .controls-panel:active {
        box-shadow: var(--shadow-md);
    }

    .input-btn:active {
        background-color: var(--bg-card);
        color: var(--color-primary-600);
        box-shadow: var(--shadow-sm);
    }

    .slider:active::-webkit-slider-thumb {
        transform: scale(1.1);
        box-shadow: 0 0 0 4px var(--color-primary-100);
    }

    .checkbox-wrapper:active {
        background-color: var(--bg-checkbox-hover);
        box-shadow: var(--shadow-sm);
        border-color: var(--border-color-hover);
    }


    .collapsible-header:active {
        background-color: var(--bg-checkbox-hover);
    }

    .editor-panel.collapsed .panel-header:active {
        background-color: var(--bg-checkbox-hover);
    }

    [data-theme="dark"] .collapsible-header:active {
        background-color: var(--bg-input-group);
    }

    [data-theme="dark"] .editor-panel.collapsed .panel-header:active {
        background-color: var(--bg-input-group);
    }

    .copy-btn:active {
        background: var(--bg-checkbox-hover);
        color: var(--text-main);
        border-color: var(--border-color-hover);
    }

    .custom-scrollbar::-webkit-scrollbar-thumb:active {
        background: rgba(120, 120, 120, 0.5);
    }

    .fullscreen-toggle:active {
        background-color: var(--bg-checkbox-hover);
        color: var(--color-primary-600);
        box-shadow: var(--shadow-md);
        border-color: var(--color-primary-100);
    }

    [data-theme="dark"] .fullscreen-toggle:active {
        background-color: var(--color-slate-700);
        border-color: var(--color-slate-600);
        color: #fcd34d;
    }

    .theme-toggle:active {
        background-color: var(--bg-checkbox-hover);
        color: var(--color-primary-600);
        box-shadow: var(--shadow-md);
        border-color: var(--color-primary-100);
    }

    [data-theme="dark"] .theme-toggle:active {
        background-color: var(--color-slate-700);
        border-color: var(--color-slate-600);
        color: #fcd34d;
    }

    .panel-header.dark-header .copy-btn:active {
        border-color: #64748b;
        color: #f8fafc;
        background-color: rgba(255, 255, 255, 0.1);
    }
}


.theme-icon-sun,
.theme-icon-moon {
    position: absolute;
    transition: transform 0.5s cubic-bezier(0.34, 1.56, 0.64, 1), opacity 0.3s ease;
}

.theme-icon-sun {
    opacity: 0;
    transform: rotate(-90deg) scale(0.5);
}

.theme-icon-moon {
    opacity: 1;
    transform: rotate(0) scale(1);
}

[data-theme="dark"] .theme-icon-sun {
    opacity: 1;
    transform: rotate(0) scale(1);
    display: block;
}

[data-theme="dark"] .theme-icon-moon {
    opacity: 0;
    transform: rotate(90deg) scale(0.5);
    display: block;
}

.editor-panel {
    display: flex;
    flex-direction: column;
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    overflow: hidden;
    transition: flex 0.4s cubic-bezier(0.2, 0, 0, 1), min-width 0.4s, border-color 0.3s, box-shadow 0.3s;
    min-width: 0;
}

.editor-panel:focus-within {
    box-shadow: var(--shadow-md);
    border-color: var(--color-primary-100);
}

[data-theme="dark"] .editor-panel:focus-within {
    border-color: var(--color-slate-600);
}

.panel-header {
    min-height: 56px;
    padding: 0 1.25rem;
    background: var(--bg-app);
    border-bottom: 1px solid var(--border-color);
    font-weight: 600;
    color: var(--color-slate-700);
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.95rem;
    transition: background-color 0.2s, border-color 0.3s, color 0.2s;
}

[data-theme="dark"] .panel-header {
    background: var(--bg-input-group);
    color: var(--text-main);
}


.textarea {
    color: var(--text-main);
}

textarea {
    color: var(--text-main);
    line-height: 1.6;
    padding: 1em;
}

textarea:focus {
    background-color: var(--bg-app);
}

.dark-panel {
    background: #1e1e1e;
    border-color: #333;
}

.panel-header.dark-header {
    background-color: #252526;
    border-bottom: 1px solid #333;
    color: #e2e8f0;
}

.panel-header.dark-header .copy-btn {
    border-color: #334155;
    color: #94a3b8;
}


.panel-header.dark-header .copy-btn.copied {
    border-color: var(--color-success);
    color: var(--color-success);
    background: rgba(34, 197, 94, 0.1);
}

.panel-header.dark-header .header-left .icon {
    color: #60a5fa;
}

#output-code {
    font-family: var(--font-mono);
    line-height: 1.6;
}

.ocr-drop-overlay {
    position: fixed;
    inset: 0;
    z-index: 200;
    display: none;
    align-items: center;
    justify-content: center;
    background: rgba(15, 23, 42, 0.48);
    backdrop-filter: blur(2px);
    pointer-events: none;
}

.ocr-drop-overlay.visible {
    display: flex;
}

.ocr-drop-overlay-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.4rem;
    padding: 1rem 1.4rem;
    border-radius: var(--radius-lg);
    border: 1px dashed rgba(255, 255, 255, 0.8);
    background: rgba(15, 23, 42, 0.75);
    color: #f8fafc;
    text-align: center;
    box-shadow: var(--shadow-lg);
}

.ocr-drop-overlay-content strong {
    font-size: 1rem;
}

.ocr-drop-overlay-content span {
    font-size: 0.8rem;
    color: rgba(248, 250, 252, 0.88);
}