:root {
    /* Flat E-ink Light Mode */
    --bg-page: #f9f9f9; 
    --bg-panel: #ffffff; 
    --bg-input: #ffffff;
    --text-main: #111111;
    --text-muted: #666666;
    
    /* E-ink uses strict, high-contrast borders without blurs */
    --border-soft: #dddddd;
    --border-strong: #111111;
    
    --brand-color: #111111; 
    --brand-accent: #cc0000;
    
    --btn-primary-bg: #111111;
    --btn-primary-text: #ffffff;
    --btn-primary-hover: #ffffff;
    
    --radius-sm: 0px; 
    --radius-lg: 0px; 
    
    --shadow-flat: 4px 4px 0px rgba(17, 17, 17, 1);
}

[data-theme="dark"] {
    /* Flat E-ink Dark Mode */
    --bg-page: #121212;
    --bg-panel: #1a1a1a;
    --bg-input: #222222;
    --text-main: #eeeeee;
    --text-muted: #999999;
    
    --border-soft: #333333;
    --border-strong: #eeeeee;
    
    --brand-color: #eeeeee;
    
    --btn-primary-bg: #111111;
    --btn-primary-text: #ffffff;
    --btn-primary-hover: #cc0000;
    
    --shadow-flat: 4px 4px 0px rgba(238, 238, 238, 1);
}

* {
    box-sizing: border-box;
    border-radius: 0 !important;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
    background-color: var(--bg-page);
    color: var(--text-main);
    margin: 0;
    padding: 0;
    line-height: 1.5;
    min-height: 100vh;
    transition: background-color 0.1s;
    -webkit-font-smoothing: antialiased;
}

/* Override Bootstrap */
.btn {
    border-radius: 0 !important;
    border: 2px solid var(--border-strong);
    font-weight: 800;
    text-transform: uppercase;
    transition: all 0.2s;
    box-shadow: 4px 4px 0px var(--border-strong);
}

.btn-primary {
    background-color: var(--text-main);
    border-color: var(--border-strong);
    color: var(--bg-panel);
}

.btn-primary:hover, .btn-primary:active, .btn-primary:focus {
    background-color: var(--bg-panel) !important;
    border-color: var(--brand-accent) !important;
    color: var(--brand-accent) !important;
    box-shadow: 2px 2px 0px var(--brand-accent) !important;
    transform: translate(2px, 2px);
}

.btn-cta-white {
    background-color: white !important;
    color: black !important;
    border: 2px solid var(--border-strong) !important;
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: 2px;
    box-shadow: 4px 4px 0px var(--brand-accent) !important;
}

.btn-cta-white:hover {
    background-color: var(--brand-accent) !important;
    color: white !important;
    box-shadow: 4px 4px 0px white !important;
    transform: translate(2px, 2px);
}

.btn .bi {
    color: inherit !important;
}

.bi {
    vertical-align: middle;
    line-height: inherit;
    color: inherit;
}

/* Base utilities */
a { text-decoration: none; color: var(--text-main); }
a:hover { text-decoration: underline; }

/* Wrapper */
.page-wrapper {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.main-layout {
    padding-top: 120px;
    padding-bottom: 80px;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* SaaS Header */
.saas-header {
    background-color: var(--bg-panel);
    border-bottom: 2px solid var(--border-strong);
    padding: 0 24px;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.logo {
    font-size: 1.5rem;
    font-weight: 900;
    letter-spacing: -0.05em;
    margin: 0;
}

.logo span {
    color: var(--brand-accent);
}

.saas-nav {
    display: flex;
    gap: 32px;
    margin-left: auto;
    margin-right: 32px;
    align-items: center;
}

.saas-nav a {
    font-size: 0.85rem;
    font-weight: 800;
    text-transform: uppercase;
    color: var(--text-muted);
    letter-spacing: 0.05em;
    transition: color 0.2s;
}

.saas-nav a:hover {
    color: var(--text-main);
    text-decoration: none;
    border-bottom: 2px solid var(--border-soft);
    padding-bottom: 4px;
}

.saas-nav a.active {
    color: var(--text-main);
    border-bottom: 2px solid var(--brand-accent);
    padding-bottom: 4px;
}

.header-controls {
    display: flex;
    align-items: center;
    gap: 16px;
}

.nav-link {
    font-size: 0.9rem;
    font-weight: 600;
}

.theme-toggle {
    background: transparent;
    border: 2px solid var(--border-strong);
    color: var(--text-main);
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s;
}

.theme-toggle:hover {
    background: var(--text-main);
    color: var(--bg-page);
}

[data-theme="dark"] .light-icon { display: block; }
[data-theme="dark"] .dark-icon { display: none; }
:root:not([data-theme="dark"]) .light-icon { display: none; }
:root:not([data-theme="dark"]) .dark-icon { display: block; }

/* Layout Elements */
.info-banner {
    background: var(--border-soft);
    border: 2px solid var(--border-strong);
    padding: 12px 20px;
    margin: 20px 0;
    font-size: 0.9rem;
    font-weight: 600;
    width: 100%;
    display: flex;
    align-items: center;
    gap: 12px;
    box-shadow: 4px 4px 0px var(--border-strong);
}
.info-banner a { text-decoration: underline; font-weight: 800; }
.info-banner strong { font-weight: 900; }

/* Obsolete layout classes removed... using .page-wrapper and .split-view */

.file-list-items {
    max-height: 200px;
    overflow-y: auto;
}

.file-item {
    display: flex;
    justify-content: space-between;
    padding: 12px 16px;
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    border-bottom: 1px solid var(--border-soft);
}
.file-item:last-child { border-bottom: none; }
.file-item:hover { background: var(--bg-page); }
.file-item.active { font-weight: 800; background: var(--text-main); color: var(--bg-page); }
.file-remove { color: var(--text-muted); }
.file-item.active .file-remove { color: var(--bg-page); }
.file-remove:hover { color: var(--brand-accent); }

/* Settings Panels */
.settings-panel {
    background-color: var(--bg-panel);
    border: 2px solid var(--border-strong);
    box-shadow: var(--shadow-flat);
    margin-bottom: 8px;
}

.panel-header {
    font-size: 0.85rem;
    font-weight: 800;
    color: var(--bg-page);
    background: var(--text-main);
    letter-spacing: 0.05em;
    padding: 12px 16px;
    text-transform: uppercase;
}

.panel-body {
    padding: 20px 16px;
}

.setting-row { margin-bottom: 24px; }
.setting-label {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
}
.setting-label label {
    font-size: 0.75rem;
    font-weight: 800;
    color: var(--text-main);
    text-transform: uppercase;
    margin: 0;
}
.value-badge {
    font-size: 0.7rem;
    font-weight: 900;
    padding: 3px 8px;
    background: var(--text-main);
    color: var(--bg-page);
    font-family: monospace;
}
.form-range {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 6px;
    background: var(--border-soft);
    border-radius: 0;
    outline: none;
}
.form-range::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 20px;
    height: 20px;
    background: var(--text-main);
    cursor: pointer;
    border: none;
}
.form-range::-moz-range-thumb {
    width: 20px;
    height: 20px;
    background: var(--text-main);
    cursor: pointer;
    border: none;
}

/* Brutalist Form Controls */
.form-select, .flat-input {
    width: 100%;
    font-size: 0.9rem;
    padding: 8px 12px;
    border: 2px solid var(--border-strong);
    background-color: var(--bg-input);
    color: var(--text-main);
    font-family: inherit;
    font-weight: 600;
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    border-radius: 0;
}

.form-select {
    padding-right: 32px;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 16 16'%3E%3Cpath fill='currentColor' d='M8 11L3 6h10l-5 5z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 10px center;
}

[data-theme="dark"] .form-select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 16 16'%3E%3Cpath fill='%23ffffff' d='M8 11L3 6h10l-5 5z'/%3E%3C/svg%3E");
}

.form-select:focus, .flat-input:focus {
    outline: none;
    box-shadow: 2px 2px 0px var(--text-main);
}

.flat-range {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    background: transparent;
}
.flat-range::-webkit-slider-runnable-track {
    width: 100%;
    height: 4px;
    background: var(--text-main);
}
.flat-range::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    height: 20px;
    width: 20px;
    background: var(--bg-page);
    border: 2px solid var(--border-strong);
    margin-top: -8px;
    cursor: pointer;
}

.range-wrapper {
    display: flex;
    gap: 16px;
    align-items: center;
}
.range-wrapper .flat-input {
    width: 70px;
    text-align: center;
}

.setting-check {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 12px;
}

.setting-check input[type="checkbox"] {
    appearance: none;
    width: 20px;
    height: 20px;
    border: 2px solid var(--border-strong);
    background: var(--bg-input);
    cursor: pointer;
    position: relative;
    margin: 0;
    flex-shrink: 0;
}
.setting-check input[type="checkbox"]:checked {
    background: var(--text-main);
}
.setting-check input[type="checkbox"]:checked::after {
    content: '';
    position: absolute;
    top: 2px;
    left: 6px;
    width: 5px;
    height: 10px;
    border: solid var(--bg-page);
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

.check-label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-main);
    cursor: pointer;
    line-height: 1.4;
}

.check-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px 16px;
}

/* Orientation buttons */
.orientation-buttons {
    display: flex;
    gap: 8px;
}
.orientation-btn {
    flex: 1;
    background: var(--bg-input);
    color: var(--text-main);
    border: 2px solid var(--border-strong);
    padding: 8px 4px;
    cursor: pointer;
    font-weight: 700;
    font-size: 0.8rem;
    transition: all 0.1s;
}
.orientation-btn:hover { background: var(--border-soft); }
.orientation-btn.active {
    background: var(--text-main);
    color: var(--bg-page);
    box-shadow: 2px 2px 0 var(--border-strong);
    transform: translate(-2px, -2px);
}

/* Buttons */
.btn-primary {
    background: var(--btn-primary-bg);
    color: var(--btn-primary-text);
    border: 2px solid var(--border-strong);
    padding: 12px 20px;
    font-size: 0.9rem;
    font-weight: 800;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    cursor: pointer;
    transition: all 0.1s;
    font-family: inherit;
    box-shadow: var(--shadow-flat);
}
.btn-primary:hover:not(:disabled) { 
    transform: translate(2px, 2px);
    box-shadow: 2px 2px 0px rgba(17,17,17,1); /* slightly smaller */
}
[data-theme="dark"] .btn-primary:hover:not(:disabled) { 
    box-shadow: 2px 2px 0px rgba(238,238,238,1); 
}
.btn-primary:active:not(:disabled) {
    transform: translate(4px, 4px);
    box-shadow: none;
}
.btn-primary:disabled { opacity: 0.5; cursor: not-allowed; box-shadow: none; transform: none;}

.btn-large { padding: 16px 20px; font-size: 1rem; }

.btn-flat-outline {
    background: transparent;
    color: var(--text-main);
    border: 2px solid var(--border-strong);
    padding: 10px 16px;
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    cursor: pointer;
}
.btn-flat-outline:hover:not(:disabled) { background: var(--text-main); color: var(--bg-page); }
.btn-flat-outline:disabled { opacity: 0.5; }

.btn-signup { padding: 8px 16px; text-transform: none; }

.w-100 { width: 100%; }
.mb-1 { margin-bottom: 4px; }
.mb-2 { margin-bottom: 12px; }
.mb-3 { margin-bottom: 20px; }
.pb-0 { padding-bottom: 0 !important; }
.mt-1 { margin-top: 4px; }
.mt-3 { margin-top: 24px; }
.pt-2 { padding-top: 16px; }
.border-top-subtle { border-top: 2px solid var(--border-soft); }
.border-bottom-subtle { border-bottom: 2px solid var(--border-soft); }

/* Preview Grid Area */
.preview-container {
    border: 2px solid var(--border-strong);
    background: var(--bg-panel);
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-flat);
}

.preview-toolbar-flat {
    display: flex;
    justify-content: space-between;
    padding: 12px 20px;
    border-bottom: 2px solid var(--border-strong);
    background: var(--border-soft);
    align-items: center;
}

.tb-left { display: flex; align-items: center; gap: 16px; }
.page-info { font-size: 0.9rem; font-weight: 700; font-family: 'Inter', monospace; letter-spacing: 0.05em; }
.flat-btn {
    background: var(--bg-input);
    border: 2px solid var(--border-strong);
    padding: 4px 12px;
    font-weight: 800;
    cursor: pointer;
    color: var(--text-main);
}
.flat-btn:hover:not(:disabled) { background: var(--text-main); color: var(--bg-page); }
.flat-btn:disabled { opacity: 0.3; }

.book-meta {
    text-align: right;
    display: flex;
    flex-direction: column;
    font-size: 0.8rem;
    color: var(--text-main);
    font-weight: 600;
}

/* Main Layout & States */
.page-wrapper {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

#appContainer {
    flex: 1;
    display: flex;
    flex-direction: column;
    padding: 40px 0;
}

/* State: Active */
.main-state-active .drop-zone-large { display: none !important; }
.main-state-active .file-list-compact { display: flex !important; }

/* Large Upload Area */
.upload-row {
    margin-bottom: 30px;
    display: flex;
    justify-content: center;
}

.drop-zone-large {
    width: 100%;
    max-width: 800px;
    border: 3px dashed var(--border-strong);
    background-color: var(--bg-panel);
    padding: 100px 40px;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 12px 12px 0px var(--border-strong);
}

.drop-zone-large:hover {
    transform: translate(-4px, -4px);
    box-shadow: 16px 16px 0px var(--border-strong);
    background-color: var(--border-soft);
}

.dz-inner i { font-size: 4rem; color: var(--text-main); margin-bottom: 24px; display: block; }
.dz-text { font-size: 1.5rem; font-weight: 800; text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 12px; }
.dz-subtext { font-size: 1rem; color: var(--text-muted); }

/* Compact File List (First Row After Upload) */
.file-list-compact {
    width: 100%;
    background-color: var(--bg-panel);
    border: 2px solid var(--border-strong);
    padding: 12px 24px;
    display: grid;
    grid-template-columns: 1fr auto;
    align-items: center;
    gap: 24px;
    box-shadow: 6px 6px 0px var(--border-strong);
}

.compact-left-actions { 
    display: flex; 
    align-items: center; 
    gap: 12px; 
    overflow-x: auto;
    scrollbar-width: none;
    flex: 1;
}
.compact-left-actions::-webkit-scrollbar { display: none; }

.compact-items { display: flex; gap: 8px; flex-shrink: 0; }

.compact-right-actions {
    display: flex;
    align-items: center;
    gap: 16px;
    flex-shrink: 0;
}

.compact-file-item {
    background: var(--bg-page);
    border: 2px solid var(--border-strong);
    padding: 8px 16px;
    font-size: 0.75rem;
    font-weight: 800;
    text-transform: uppercase;
    white-space: nowrap;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
}
.compact-file-item.active { background: var(--text-main); color: var(--bg-page); }
.compact-file-item:hover:not(.active) { background: var(--border-soft); }

.file-remove {
    margin-left: 8px;
    padding: 2px;
    transition: transform 0.2s;
}
.file-remove:hover {
    color: var(--brand-accent);
    transform: scale(1.2);
}

.add-more-compact {
    background: var(--text-main);
    color: var(--bg-page);
    border: none;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 1.2rem;
}

.compact-left-actions { display: flex; align-items: center; gap: 12px; }
.compact-right-actions { display: flex; align-items: center; gap: 12px; }
.file-count-badge { 
    font-size: 0.7rem; 
    font-weight: 800; 
    background: var(--border-strong); 
    color: var(--bg-page); 
    padding: 2px 8px; 
    border-radius: 12px;
    text-transform: uppercase;
}

.btn-export-compact, .btn-export-outline-compact {
    font-size: 0.75rem;
    font-weight: 900;
    padding: 8px 16px;
    cursor: pointer;
    text-transform: uppercase;
    font-family: inherit;
    transition: all 0.1s;
}

.btn-export-compact {
    background: var(--brand-accent);
    color: white;
    border: none;
    box-shadow: 0 4px 0 #990000;
}
.btn-export-compact:hover:not(:disabled) { transform: translateY(-1px); box-shadow: 0 5px 0 #990000; }
.btn-export-compact:active:not(:disabled) { transform: translateY(2px); box-shadow: 0 2px 0 #990000; }
.btn-export-compact:disabled { background: var(--text-muted); box-shadow: none; opacity: 0.5; }

.btn-export-outline-compact {
    background: transparent;
    color: var(--text-main);
    border: 2px solid var(--border-strong);
}

.progress-box-compact { width: 120px; }
.progress-text-mini { font-size: 0.6rem; font-weight: 900; text-align: center; margin-top: 4px; text-transform: uppercase; color: var(--text-main); }

/* Updated 2-Column Workspace Layout */
.split-view {
    display: flex;
    gap: 24px;
    align-items: flex-start;
}

.controls-column {
    width: 380px;
    flex-shrink: 0;
}

.preview-column {
    flex: 1;
    min-width: 0;
}

.sidebar-toc {
    max-height: 400px;
    overflow-y: auto;
    background: var(--bg-page);
}

.chapter-list {
    overflow-y: auto;
    flex: 1;
}

/* Improved Loading Overlay */
.conversion-loader {
    position: absolute;
    inset: 0;
    background: rgba(255, 255, 255, 0.9);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 100;
    transition: opacity 0.3s;
}

.hidden { display: none !important; }

/* Preview Clean State */
.preview-panel-clean {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.preview-toolbar-centered {
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    margin-bottom: 24px;
}

.tb-group {
    display: flex;
    align-items: center;
    gap: 12px;
    background: var(--bg-panel);
    padding: 6px 16px;
    border: 1px solid var(--border-soft);
}

.tb-title {
    font-size: 0.8rem;
    font-weight: 800;
    text-transform: uppercase;
    color: var(--text-muted);
    letter-spacing: 0.05em;
}

/* Hardware Layout HUD (New) */
.hardware-compact-hud {
    display: flex;
    align-items: center;
    gap: 30px;
    padding: 4px 0;
}

.hw-hud-item {
    display: flex;
    align-items: center;
    gap: 10px;
}
.hw-hud-item label {
    font-size: 0.65rem;
    font-weight: 900;
    color: var(--text-muted);
}

.tiny-select {
    background: transparent;
    border: 1px solid var(--border-soft);
    padding: 2px 4px;
    font-size: 0.75rem;
    font-weight: 800;
    color: var(--text-main);
    text-transform: uppercase;
    cursor: pointer;
}

.orientation-hud {
    display: flex;
    gap: 4px;
}
.orientation-hud .orientation-btn {
    width: 34px;
    height: 34px;
    font-size: 1.2rem;
    font-weight: 900;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-panel);
    border: 1px solid var(--border-soft);
    color: var(--text-main);
    cursor: pointer;
    transition: all 0.2s;
}
.orientation-hud .orientation-btn:hover { background: var(--border-soft); }
.orientation-hud .orientation-btn.active {
    background: var(--text-main);
    color: var(--bg-page);
    border-color: var(--text-main);
}

/* Hardware Swatch Customization */
.bezel-swatches { display: flex; gap: 8px; }
.swatch {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    border: 2px solid var(--border-soft);
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}
.swatch-black { background-color: #1e272e; }
.swatch-white { background-color: #f1f2f6; }
.swatch.active { 
    border-color: var(--text-main); 
    transform: scale(1.2);
    box-shadow: 0 0 10px var(--border-soft); 
}

/* White Device Physical Profile */
.preview-frame.white-bezel { background-color: #dcdde1; box-shadow: 0 32px 64px -12px rgba(0,0,0,0.15); }
.preview-frame.white-bezel .chin-bar { background: rgba(0,0,0,0.15); box-shadow: 0 1px 2px rgba(0,0,0,0.1); }

/* Metadata UI cluster */
.metadata-line { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; justify-content: center; }
.meta-separator { color: var(--border-soft); font-weight: 300; }
.book-author { color: var(--text-muted); font-size: 0.85rem; font-weight: 600; }
.meta-label {
    background: var(--border-strong);
    color: var(--bg-page);
    font-size: 0.65rem;
    font-weight: 900;
    padding: 2px 6px;
    border-radius: 3px;
    text-transform: uppercase;
}

.tb-divider { width: 1px; height: 20px; background: var(--border-soft); }

.preview-area-clean {
    min-height: 800px;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    padding-bottom: 60px;
}

.preview-frame {
    background-color: #1e272e; /* Deep hardware charcoal */
    border-radius: 12px; /* Subtle rounded corners */
    border: none;
    box-shadow: 0 45px 100px -20px rgba(0, 0, 0, 0.4);
    position: relative;
    transform: scale(0.75);
    transform-origin: center top;
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.preview-frame.orientation-0 { padding: 30px 30px 95px 30px; }
.preview-frame.orientation-90 { padding: 30px 95px 30px 30px; }
.preview-frame.orientation-180 { padding: 95px 30px 30px 30px; }
.preview-frame.orientation-270 { padding: 30px 30px 30px 95px; }


/* X3: Shell adjustments */
.device-x3 {
    transform: scale(0.68) !important;
}

/* SLEEPING MODE (Inside Frame) */
.empty-state {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 480px;
    height: 800px;
    background: #fff;
    border-radius: 4px;
    border: none;
    margin: 0;
}

.sleeping-cluster {
    text-align: center;
    opacity: 0.15;
    user-select: none;
    transition: opacity 0.5s;
}

.logo-sleeping { font-size: 2.2rem; letter-spacing: -2px; color: #000; }
.sleeping-label { font-size: 1.8rem; font-weight: 900; letter-spacing: 3px; font-family: 'Outfit', sans-serif; color: #000; }
.sleeping-sub { font-size: 0.75rem; font-weight: 800; color: #333; text-transform: uppercase; letter-spacing: 1px; }

.preview-frame::after { display: none !important; }

/* Chin bars removed */


.settings-panel {
    background-color: var(--bg-panel);
    border: 2px solid var(--border-strong);
    box-shadow: 6px 6px 0px var(--border-strong);
    margin-bottom: 24px;
}

.panel-header {
    background: var(--text-main);
    color: var(--bg-page);
    padding: 10px 16px;
    font-weight: 900;
    font-family: 'Outfit', sans-serif;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    font-size: 0.85rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.settings-panel.collapsible .panel-header {
    cursor: pointer;
    transition: opacity 0.2s;
}

.settings-panel.collapsible .panel-header:hover {
    opacity: 0.9;
}

.settings-panel.collapsible .bi-chevron-down {
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.settings-panel.collapsible.collapsed .bi-chevron-down {
    transform: rotate(-90deg);
}

.settings-panel.collapsible.collapsed .panel-body {
    display: none;
}


.preview-frame.orientation-0 { padding: 30px 30px 95px 30px; }
.preview-frame.orientation-90 { padding: 30px 95px 30px 30px; }
.preview-frame.orientation-180 { padding: 95px 30px 30px 30px; }
.preview-frame.orientation-270 { padding: 30px 30px 30px 95px; }

.preview-screen {
    background-color: #fff;
    border: none;
    line-height: 0;
    overflow: hidden;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Main SaaS Footer */
.saas-footer {
    border-top: 2px solid var(--border-strong);
    background-color: var(--bg-page);
    padding: 80px 0 40px 0;
    margin-top: 80px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 60px;
}

.footer-brand .logo {
    font-size: 1.8rem;
    margin-bottom: 20px;
}

.footer-motto {
    font-size: 0.9rem;
    font-weight: 800;
    line-height: 1.4;
    margin-bottom: 15px;
    text-transform: uppercase;
    color: var(--text-main);
}

.footer-description {
    font-size: 0.85rem;
    color: var(--text-muted);
    line-height: 1.6;
    font-weight: 500;
}

.footer-col h4 {
    font-size: 0.75rem;
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--brand-accent);
    margin-bottom: 25px;
}

.footer-links {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-links li {
    margin-bottom: 12px;
}

.footer-links a {
    font-size: 0.8rem;
    font-weight: 800;
    text-transform: uppercase;
    color: var(--text-main);
    transition: color 0.2s;
}

.footer-links a:hover {
    color: var(--brand-accent);
    text-decoration: none;
}

.footer-bottom {
    border-top: 2px solid var(--border-soft);
    padding-top: 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.copyright {
    font-size: 0.75rem;
    font-weight: 800;
    text-transform: uppercase;
    color: var(--text-muted);
}

@media (max-width: 992px) {
    .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 576px) {
    .footer-grid { grid-template-columns: 1fr; }
    .footer-bottom { flex-direction: column; gap: 15px; text-align: center; }
}

[data-theme="dark"] .conversion-loader {
    background: rgba(26, 26, 26, 0.95);
    color: var(--text-main);
}

.meta-grid {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 12px 20px;
    font-size: 0.85rem;
    align-items: baseline;
}

.meta-key {
    font-weight: 800;
    text-transform: uppercase;
    color: #888;
    font-size: 0.75rem;
    letter-spacing: 0.05em;
}

.meta-val {
    font-weight: 800;
    color: var(--text-main);
    word-break: break-all;
}

@media (max-width: 1400px) {
    .split-view { flex-wrap: wrap; }
    .controls-column, .toc-column { width: 300px; }
    .preview-column { width: 100%; order: -1; margin-bottom: 20px; }
}