:root {
    --font-ui: 
        Inter, 
        -apple-system, 
        BlinkMacSystemFont, 
        "Segoe UI", 
        Roboto, 
        Oxygen, 
        Ubuntu, 
        Cantarell, 
        "Helvetica Neue", 
        sans-serif;
    --bg: #050506;
    --panel: #0d0d10;
    --accent: #10b981;
    --accent-glow: rgba(16, 185, 129, 0.2);
    --text: #ffffff;
    --text-dim: #a1a1aa;
    --border: #1f1f23;
    --shadow: 0 8px 32px rgba(0,0,0,0.5);
    --panic: #ef4444;
}

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

body { 
    font-family: var(--font-ui); 
    background: var(--bg); 
    color: var(--text); 
    height: 100vh; 
    overflow: hidden; 
    display: flex; 
    flex-direction: column; 
}

.dashboard-root { 
    display: flex; 
    flex-direction: column; 
    height: 100vh; 
    width: 100vw; 
    overflow: hidden; 
}

/* ========================================== */
/* 2. LAYOUT SECTIONS                         */
/* ========================================== */

/* HEADER */
.app-header { 
    height: 60px; 
    min-height: 60px; 
    background: var(--panel); 
    border-bottom: 1px solid var(--border); 
    display: flex; 
    align-items: center; 
    justify-content: space-between; 
    padding: 0 24px 0 56px; 
    z-index: 100; 
    flex-shrink: 0; 
    position: relative; 
}

.header-left { display: flex; align-items: center; gap: 20px; }
.header-right { display: flex; align-items: center; gap: 16px; }

.brand { font-weight: 800; font-size: 18px; letter-spacing: -0.5px; white-space: nowrap; }
.badge { 
    font-size: 10px; padding: 2px 8px; border-radius: 4px; 
    background: var(--accent-glow); color: var(--accent); 
    border: 1px solid var(--accent); vertical-align: middle; margin-left: 8px; 
}

.divider { width: 1px; height: 24px; background: var(--border); }
.controls-group { display: flex; gap: var(--header-gap, 12px); align-items: center; }

#manga-note {
    display: none;
    align-items: center;
    gap: 4px;
    color: #ff9800;
    font-size: 11px;
    font-weight: 700;
    white-space: nowrap;
    flex-shrink: 0;
}
#manga-note.visible { display: flex; }

/* MAIN WORKSPACE */
.app-main { flex: 1; display: grid; grid-template-columns: 1fr 340px; overflow: hidden; min-height: 0; }
.main-workspace { display: flex; flex-direction: column; border-right: 1px solid var(--border); background: #000; min-height: 0; overflow: hidden; }

/* VIDEO STAGE */
.video-stage { 
    flex: 1 1 0; position: relative; display: flex; align-items: center; 
    justify-content: center; overflow: hidden; 
    background: radial-gradient(circle, #111 0%, #000 100%); min-height: 0; 
}

.video-anchor { position: relative; display: flex; align-items: center; justify-content: center; flex: 1 1 0; min-height: 0; max-width: 100%; max-height: 100%; width: 100%; height: 100%; }
#vn-video { display: block; width: 100%; height: 100%; min-height: 0; object-fit: contain; box-shadow: var(--shadow); border-radius: 4px; }
#selection-overlay { position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); width: 100%; height: 100%; cursor: crosshair; z-index: 10; }

/* TRANSCRIPTION TRAY (BOTTOM) */
.transcription-tray { 
    height: 340px; min-height: 340px; background: var(--panel); 
    border-top: 1px solid var(--border); display: flex; flex-direction: column; 
    flex: 0 0 auto; z-index: 50; overflow: hidden;
}

.tray-actions { 
    padding: 16px 20px; border-bottom: 1px solid var(--border); 
    display: flex; flex-direction: column; align-items: center; 
    justify-content: flex-start; gap: 12px; height: 220px; 
    flex-shrink: 0; overflow: hidden; width: 100%; border-radius: 8px; 
}

.tray-buttons-row {
    display: flex;
    flex-direction: row;
    justify-content: center;
    align-items: center;
    gap: 12px;
}

.latest-line-window { flex: 1; padding: 16px 24px; display: flex; align-items: center; justify-content: center; overflow-y: auto; height: 120px; min-height: 120px; position: relative; }
.latest-text-content { 
    font-size: 1.8rem; font-weight: 700; color: var(--text); 
    text-align: center; max-width: 90%; line-height: 1.3; 
    text-shadow: 0 2px 10px rgba(0,0,0,0.5); user-select: text !important; 
    cursor: text; margin: 0; 
}

/* MANGA LAYOUT OVERRIDES (Side-by-side) */
.app-main.manga-layout .main-workspace {
    flex-direction: row;
}

.app-main.manga-layout .transcription-tray {
    width: 500px;
    height: 100%;
    border-top: none;
    border-left: 1px solid var(--border);
}

/* Treat Text Area Size as Panel Width in Manga mode */
body.text-area-small .app-main.manga-layout .transcription-tray { width: 350px; }
body.text-area-large .app-main.manga-layout .transcription-tray { width: 650px; }

.app-main.manga-layout .tray-actions {
    height: auto;
    min-height: auto;
    padding-bottom: 24px;
}

.app-main.manga-layout .latest-line-window {
    height: auto;
    align-items: flex-start;
    padding-top: 32px;
}

.app-main.manga-layout .latest-text-content {
    font-size: 1.5rem;
}

.app-main.manga-layout .debug-img {
    display: none !important;
}

/* SIDEBAR */
.history-sidebar { display: flex; flex-direction: column; background: #08080a; min-height: 0; overflow: hidden; }
.sidebar-header { padding: 20px; border-bottom: 1px solid var(--border); display: flex; justify-content: space-between; align-items: center; flex-shrink: 0; }
.sidebar-header h3 { font-size: 14px; color: var(--text-dim); text-transform: uppercase; letter-spacing: 1px; }

.history-scroll { flex: 1; overflow-y: auto; padding: 16px; display: flex; flex-direction: column; gap: 8px; min-height: 0; }
.history-item { 
    background: var(--panel); border: 1px solid var(--border); 
    padding: 12px 14px; border-radius: 8px; font-size: 14px; 
    line-height: 1.5; color: var(--text-dim); border-left: 3px solid var(--accent); 
    user-select: text !important; cursor: text; transition: 0.2s; margin: 0; 
    display: flex; align-items: flex-start; gap: 12px; 
}

.history-item:hover { border-color: var(--accent); color: var(--text); background: rgba(255,255,255,0.03); }
.history-item span { flex: 1; pointer-events: auto; max-height: 9em; overflow-y: auto; overflow-x: hidden; word-break: break-all; scrollbar-width: thin; scrollbar-color: var(--border) transparent; }
.history-item span::-webkit-scrollbar { width: 6px; }
.history-item span::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
.history-item span::-webkit-scrollbar-track { background: transparent; }

.item-btns { display: flex; gap: 6px; opacity: 0.4; transition: 0.2s; align-self: center; }
.history-item:hover .item-btns { opacity: 1; }
.item-btns button { background: none; border: none; cursor: pointer; font-size: 14px; padding: 4px; border-radius: 4px; transition: 0.1s; filter: grayscale(1); opacity: 0.7; }
.item-btns button:hover { filter: grayscale(0); opacity: 1; background: rgba(255,255,255,0.1); transform: scale(1.1); }

/* ========================================== */
/* 3. COMPONENTS                              */
/* ========================================== */

/* BUTTONS */
.btn { padding: 10px 20px; border-radius: 6px; font-weight: 600; cursor: pointer; border: none; font-size: 14px; transition: 0.2s; display: inline-flex; align-items: center; justify-content: center; }
.btn.primary { background: var(--accent); color: #000; border: none; font-weight: 800; box-shadow: 0 4px 15px var(--accent-glow); }
.btn.primary:hover { filter: brightness(1.1); transform: translateY(-1px); }
.btn.stop { background: #991b1b !important; color: #fecaca !important; box-shadow: 0 4px 15px rgba(153, 27, 27, 0.4) !important; }

.action-btn { background: var(--accent); color: #000; padding: 0 32px; font-weight: 800; font-size: 16px; border: none; border-radius: 12px; cursor: pointer; box-shadow: 0 6px 25px var(--accent-glow); transition: 0.2s; height: 60px; width: 300px; flex-shrink: 0; }
.action-btn:hover { transform: translateY(-2px); filter: brightness(1.1); }
.action-btn:disabled, .btn.disabled { background: var(--border); color: var(--text-dim); box-shadow: none; cursor: not-allowed; opacity: 0.6; }

.auto-btn {
    padding: 4px 10px;
    font-size: 12px;
    height: 32px;
    line-height: 1.2;
    border-radius: 6px;
    cursor: pointer;
    background: var(--border);
    border: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: 0.2s;
    font-weight: 700;
}
.auto-btn:hover { border-color: var(--accent); background: rgba(255,255,255,0.05); }
.auto-btn-text { color: var(--text-dim); }
.auto-btn-text::after { content: "AUTO: OFF"; }

/* State Trigger for AUTO Button */
.dashboard-root:has(#auto-capture-toggle:checked) .auto-btn-text::after {
    content: "AUTO: ON";
    color: var(--accent);
}

.speak-main-btn { position: absolute; right: 24px; background: rgba(255,255,255,0.05); border: 1px solid var(--border); color: var(--accent); font-size: 20px; width: 44px; height: 44px; border-radius: 50%; cursor: pointer; display: flex; align-items: center; justify-content: center; transition: 0.2s; box-shadow: 0 4px 15px rgba(0,0,0,0.3); }
.speak-main-btn:hover { background: var(--accent); color: #000; transform: scale(1.1); box-shadow: 0 0 20px var(--accent-glow); }

.panic-btn { background: var(--border); border: 1px solid var(--panic); color: var(--panic); width: 32px; height: 32px; border-radius: 6px; cursor: pointer; font-size: 16px; display: flex; align-items: center; justify-content: center; transition: 0.2s; }
.panic-btn:hover { background: var(--panic); color: #fff; box-shadow: 0 0 15px rgba(239, 68, 68, 0.4); }
.panic-btn.active { background: var(--panic); color: #fff; animation: blink-panic 1s infinite; }

/* INPUTS & SELECTS */
.ui-select { background: var(--bg); color: var(--text); border: 1px solid var(--border); border-radius: 6px; padding: 8px 12px; font-size: 13px; cursor: pointer; outline: none; }
.ui-select:focus { border-color: var(--accent); }

.slider-group { display: flex; align-items: center; gap: 10px; padding: 0 10px; border-radius: 6px; }
.slider-group label { font-size: 11px; font-weight: 700; color: var(--text-dim); text-transform: uppercase; white-space: nowrap; width: 85px; }
.slider-group input[type=range] { -webkit-appearance: none; appearance: none; width: 100px; height: 4px; background: var(--border); border-radius: 5px; outline: none; }
.slider-group input[type=range]::-webkit-slider-thumb { -webkit-appearance: none; appearance: none; width: 12px; height: 12px; border-radius: 50%; background: var(--accent); cursor: pointer; border: 2px solid #000; box-shadow: 0 0 10px var(--accent-glow); }

/* STATUS ELEMENTS */
.status-pill { font-size: 11px; background: #000; color: var(--text-dim); padding: 4px 12px; border-radius: 20px; border: 1px solid var(--border); transition: 0.3s; }
.status-pill.loading { color: #f87171; border-color: #f87171; }
.status-pill.ready { color: #34d399; border-color: #34d399; }
.status-pill.processing { color: #fbbf24; border-color: #fbbf24; }
.status-pill.error { color: #ef4444; border-color: #ef4444; background: rgba(239, 68, 68, 0.1); }

.debug-img { height: 120px; max-height: 120px; object-fit: contain; border-radius: 12px; border: 1px solid var(--border); background: var(--bg); box-shadow: 0 20px 60px rgba(0,0,0,0.7); flex-shrink: 0; display: block; }

.placeholder { position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 12px; color: var(--text-dim); }
.icon-glow { font-size: 48px; opacity: 0.1; filter: drop-shadow(0 0 10px var(--accent)); }
.selection-hint { position: absolute; top: 32px; left: 50%; transform: translateX(-50%); font-size: 13px; font-weight: 600; color: #fff; background: var(--accent); padding: 8px 20px; border-radius: 30px; box-shadow: 0 5px 20px rgba(0,0,0,0.5); pointer-events: none; opacity: 0; transition: 0.4s; z-index: 500; border: 1px solid rgba(255,255,255,0.2); }
.selection-hint.visible { opacity: 1; transform: translateX(-50%) translateY(10px); }

/* ========================================== */
/* 4. MODALS & GUIDE                          */
/* ========================================== */

.perf-diagnostic-box {
    position: absolute;
    top: 50px;
    right: 0;
    width: 320px;
    background: var(--panel);
    backdrop-filter: blur(16px);
    border: 1px solid var(--border);
    padding: 16px;
    border-radius: 12px;
    font-size: 13px;
    color: var(--text);
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
    z-index: 1000;
    line-height: 1.5;
}

.modal-overlay { position: fixed; inset: 0; background: rgba(0,0,0,0.8); backdrop-filter: blur(10px); z-index: 9999; display: flex; align-items: center; justify-content: center; padding: 20px; transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1); opacity: 0; visibility: hidden; pointer-events: none; }
.modal-overlay.active { opacity: 1; visibility: visible; pointer-events: all; }
.modal-content { background: var(--panel); border: 1px solid var(--border); border-radius: 16px; width: 100%; max-width: 800px; max-height: 90vh; overflow-y: auto; position: relative; padding: 40px; box-shadow: 0 25px 50px -12px rgba(0,0,0,0.5); transform: translateY(20px); transition: transform 0.3s; }
.modal-overlay.active .modal-content { transform: translateY(0); }

.modal-close { position: absolute; top: 20px; right: 20px; background: none; border: none; font-size: 32px; color: var(--text-dim); cursor: pointer; }
.modal-close:hover { color: var(--text); }
.modal-header { text-align: center; margin-bottom: 40px; }
.modal-header h2 { font-size: 32px; margin-bottom: 8px; color: var(--text); }
.modal-header p { color: var(--text-dim); font-size: 14px; letter-spacing: 1px; text-transform: uppercase; }

.guide-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.guide-card { background: rgba(255,255,255,0.02); padding: 24px; border-radius: 12px; border: 1px solid var(--border); }
.guide-card h3 { font-size: 16px; margin-bottom: 16px; color: var(--accent); display: flex; align-items: center; gap: 8px; }
.guide-card ul, .guide-card ol { padding-left: 18px; color: var(--text-dim); }
.guide-card li { margin-bottom: 8px; font-size: 13px; line-height: 1.5; }
.guide-card p { font-size: 13px; color: var(--text-dim); line-height: 1.6; margin-bottom: 10px; }
.guide-card strong { color: var(--text); }

/* ========================================== */
/* 5. SIDE MENU (HAMBURGER)                   */
/* ========================================== */

.menu-anchor { position: absolute; top: 50%; left: 12px; transform: translateY(-50%); z-index: 1000; }
.menu-btn { position: relative; background: var(--panel); border: 1px solid var(--border); color: var(--text); width: 32px; height: 32px; border-radius: 6px; cursor: pointer; font-size: 20px; display: flex; align-items: center; justify-content: center; box-shadow: 0 4px 12px rgba(0,0,0,0.5); transition: all 0.2s; }
.menu-btn:hover { background: var(--border); border-color: var(--accent); color: var(--accent); }

.side-menu {
    position: fixed; top: 0; left: 0; height: 100vh; width: 280px; 
    background: var(--panel); border-right: 1px solid var(--border); 
    z-index: 5000; transform: translateX(-100%); 
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1); 
    display: flex; flex-direction: column; padding: 60px 20px 20px 20px;
    overflow-y: auto; overflow-x: hidden;
    scrollbar-width: thin;
    scrollbar-color: var(--border) transparent;
}
.side-menu::-webkit-scrollbar { width: 6px; }
.side-menu::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
.side-menu::-webkit-scrollbar-track { background: transparent; }
.side-menu.open { transform: translateX(0); }
.menu-header { margin-bottom: 32px; border-bottom: 1px solid var(--border); padding-bottom: 12px; }
.menu-header h3 { font-size: 14px; letter-spacing: 1px; color: var(--text-dim); text-transform: uppercase; }

.menu-item-btn {
    background: none; border: 1px solid transparent; color: var(--text); 
    text-align: left; padding: 12px 16px; font-size: 14px; 
    cursor: pointer; border-radius: 8px; transition: all 0.2s; 
    margin-bottom: 8px; width: 100%;
}
.menu-item-btn:hover { background: rgba(255,255,255,0.05); border-color: var(--border); color: var(--accent); }
.menu-item-btn.warning-text { color: #ff6b6b; }
.menu-item-btn.warning-text:hover { color: #ff5252; border-color: #ff5252; }

.menu-section {
    margin-bottom: 12px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border);
}
.menu-section h4 {
    font-size: 13px;
    color: var(--text-dim);
    margin-bottom: 8px;
    font-weight: 600;
}
.menu-options-row {
    display: flex;
    gap: 8px;
}
.menu-subitem-btn {
    flex: 1;
    background: var(--panel);
    border: 1px solid var(--border);
    color: var(--text-dim);
    padding: 8px 0;
    font-size: 12px;
    border-radius: 6px;
    cursor: pointer;
    transition: 0.2s;
    text-align: center;
}
.menu-subitem-btn:hover {
    background: rgba(255,255,255,0.05);
    color: var(--text);
}
.menu-subitem-btn.active {
    background: var(--accent-glow);
    border-color: var(--accent);
    color: var(--accent);
    font-weight: 700;
}

/* SIZE OVERRIDES */
body.text-area-small .transcription-tray { height: 260px; min-height: 260px; }
body.text-area-small .latest-line-window { height: 80px; min-height: 80px; }
body.text-area-large .transcription-tray { height: 420px; min-height: 420px; }
body.text-area-large .latest-line-window { height: 160px; min-height: 160px; }

body.text-size-small .latest-text-content { font-size: 1.2rem; }
body.text-size-large .latest-text-content { font-size: 2.4rem; }
body.text-size-small .history-item { font-size: 12px; }
body.text-size-large .history-item { font-size: 16px; }

/* CAPTURE PREVIEW OVERRIDES */
body.preview-hidden .debug-img { 
    display: none !important; 
}
body.preview-hidden .tray-actions { 
    height: auto; 
    min-height: auto; 
    padding-bottom: 24px;
}
body.preview-hidden .latest-line-window { 
    height: auto !important; 
    min-height: auto !important; 
}

.menu-backdrop { position: fixed; inset: 0; background: rgba(0,0,0,0.5); backdrop-filter: blur(4px); z-index: 4000; display: none; opacity: 0; transition: opacity 0.3s; }
.menu-backdrop.open { display: block; opacity: 1; }

.history-hidden .history-sidebar { display: none !important; }
.history-hidden .app-main { grid-template-columns: 1fr !important; }

/* ========================================== */
/* 6. THEMES                                  */
/* ========================================== */

body.light-theme {
    --bg: #f8f9fa;
    --panel: #ffffff;
    --accent: #059669;
    --accent-glow: rgba(5, 150, 105, 0.1);
    --text: #111827;
    --text-dim: #4b5563;
    --border: #e2e8f0;
    --shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

body.light-theme .main-workspace { background: #fff; }
body.light-theme .video-stage { background: radial-gradient(circle, #f0f0f0 0%, #e0e0e0 100%); }
body.light-theme .history-sidebar { background: #fdfdfd; }
body.light-theme .latest-text-content { color: var(--text); text-shadow: none; }
body.light-theme .ui-select, body.light-theme .status-pill { background: #fff; color: var(--text); }
body.light-theme .guide-card { background: #f1f5f9; border-color: #e2e8f0; }

/* ========================================== */
/* 7. RESPONSIVE                              */
/* ========================================== */

@media (max-width: 1100px) {
    .app-header { padding: 0 16px 0 56px; }
    .controls-group { gap: 8px; }
    .brand { font-size: 16px; }
}

@media (max-width: 900px) {
    .app-main { grid-template-columns: 1fr 260px; }
    .header-left { gap: 12px; }
    .slider-group label { width: auto; font-size: 10px; }
    .slider-group input[type=range] { width: 80px; }
}

/* SMART HEADER COMPRESSION */
@media (max-width: 1250px) {
    :root { --header-gap: 8px; }
    .app-header { padding: 0 16px 0 56px; }
    .header-left { gap: 10px; }
}

@media (max-width: 1100px) {
    .badge.public { display: none; }
    .manga-note-text { display: none; }
    .brand { font-size: 16px; }
}

@media (max-width: 950px) {
    :root { --header-gap: 4px; }
    .header-left { gap: 5px; }
    #select-window-btn span { display: none; }
    #select-window-btn:not(.stop)::after { content: "Source"; }
    #ocr-status { font-size: 11px; padding: 4px 8px; }
}

@media (max-width: 768px) { .guide-grid { grid-template-columns: 1fr; } }

@media (max-width: 750px) {
    body { height: auto; overflow-y: auto; }
    .dashboard-root { height: auto; overflow: visible; }
    .app-main { grid-template-columns: 1fr; grid-template-rows: auto auto; overflow: visible; height: auto; }
    .main-workspace { grid-row: 1; border-right: none; }
    .history-sidebar { grid-row: 2; width: 100%; height: 500px; border-top: 1px solid var(--border); }
    .video-anchor { max-width: 100%; max-height: 100%; width: auto; height: auto; }
    .transcription-tray { height: auto; min-height: 180px; }
}

@media (max-width: 600px) {
    .app-header { padding: 8px 12px 8px 56px; gap: 8px; height: auto; flex-wrap: wrap; }
    .header-left, .header-right { width: 100%; justify-content: space-between; }
    .brand { font-size: 14px; }
    .badge { display: none; }
}

/* ========================================== */
/* 8. ANIMATIONS                              */
/* ========================================== */

@keyframes blink-panic {
    0% { opacity: 1; }
    50% { opacity: 0.7; }
    100% { opacity: 1; }
}
/* ========================================== */
/* 9. SETTINGS & PADDLEOCR                    */
/* ========================================== */

.startup-banner {
    position: relative;
    background: var(--panel);
    border-bottom: 1px solid var(--border);
    padding: 10px 24px;
    display: none;
    align-items: center;
    justify-content: space-between;
    font-size: 13px;
    z-index: 80;
    animation: slide-down 0.3s ease-out;
}
.startup-banner.active { display: flex; }
.banner-actions { display: flex; gap: 16px; align-items: center; }
.checkbox-group { display: flex; align-items: center; gap: 6px; }
.checkbox-group label { font-size: 12px; color: var(--text-dim); cursor: pointer; }

@keyframes slide-down {
    from { transform: translateY(-100%); }
    to { transform: translateY(0); }
}

/* PREMIUM UX HARDENING v2.1.10 */
.copied-flash { 
    position: relative; 
    transition: all 0.2s cubic-bezier(0.18, 0.89, 0.32, 1.28);
}
.copied-flash::after {
    content: '';
    position: absolute;
    inset: -4px;
    border: 2px solid var(--accent);
    border-radius: 8px;
    animation: flash-border 0.6s ease-out forwards;
    pointer-events: none;
    z-index: 10;
}
@keyframes flash-border {
    0% { opacity: 1; transform: scale(1); }
    100% { opacity: 0; transform: scale(1.05); }
}