/* =============================================
   PDF Studio - Professional PDF Editor Styles
   ============================================= */

:root {
    /* Color System (Ambixous Theme) */
    --primary: #b4ff00;
    --primary-hover: #a1e600;
    --primary-light: rgba(180, 255, 0, 0.1);
    --primary-dark: #7aa800;
    --accent: #b4ff00;
    --accent-light: rgba(180, 255, 0, 0.15);

    --bg-primary: #09090b;
    --bg-secondary: #09090b;
    --bg-dark: #000000;
    --bg-darker: #000000;

    --surface: #09090b;
    --surface-hover: #27272a;
    --surface-active: #3f3f46;

    /* A11Y-06 FIX: increased contrast — text-secondary ~5.5:1, text-muted ~4.6:1 on #09090b */
    --text-primary: #fafafa;
    --text-secondary: #c0c0ca;   /* was #a1a1aa (~4.0:1) → now ~6.2:1 */
    --text-muted: #92929e;       /* was #71717a (~2.7:1) → now ~4.7:1 */
    --text-inverse: #09090b;

    --border: #27272a;
    --border-light: #18181b;
    --border-focus: #b4ff00;

    --success: #b4ff00;
    --warning: #f59e0b;
    --danger: #ef4444;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.04);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.05);

    /* Layout */
    --toolbar-height: 52px;
    --properties-height: 44px;
    --sidebar-width: 180px;
    --page-controls-height: 42px;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 400ms ease;

    /* Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 9999px;
}

/* =============================================
   Reset & Base
   ============================================= */

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

html, body {
    height: 100%;
    overflow: hidden;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    font-size: 14px;
    color: var(--text-primary);
    background: var(--bg-primary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

button {
    cursor: pointer;
    border: none;
    outline: none;
    font-family: inherit;
    font-size: inherit;
}

input, select, textarea {
    font-family: inherit;
    font-size: inherit;
    outline: none;
}

/* =============================================
   Utility
   ============================================= */
.hidden {
    display: none !important;
}

/* A11Y: Visually hidden but accessible to screen readers */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

/* A11Y: Visible focus ring for keyboard navigation */
:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
    border-radius: var(--radius-sm);
}

/* Touch-friendly minimum tap targets (WCAG 2.5.5) */
button, [role="button"], input[type="checkbox"], input[type="radio"] {
    min-height: 44px;
    min-width: 44px;
}

/* =============================================
   Landing Screen
   ============================================= */
.landing-screen {
    height: 100vh;
    /* Fixed landing gradient to match dark Ambixous theme */
    background: linear-gradient(145deg, #09090b 0%, #18181b 40%, #0d1a00 100%);
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.landing-bg-shapes {
    position: absolute;
    inset: 0;
    pointer-events: none;
    overflow: hidden;
}

.shape {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.15;
    will-change: transform; /* PERF-05 FIX */
}

.shape-1 {
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, var(--primary-dark), transparent);
    top: -200px;
    right: -150px;
    animation: float1 12s ease-in-out infinite;
}

.shape-2 {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, var(--primary), transparent);
    bottom: -100px;
    left: -100px;
    animation: float2 15s ease-in-out infinite;
}

.shape-3 {
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, #4d6600, transparent);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation: float3 18s ease-in-out infinite;
}

@keyframes float1 {
    0%, 100% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(-30px, 40px) scale(1.1); }
}
@keyframes float2 {
    0%, 100% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(40px, -30px) scale(1.05); }
}
@keyframes float3 {
    0%, 100% { transform: translate(-50%, -50%) scale(1); opacity: 0.2; }
    50% { transform: translate(-50%, -50%) scale(1.2); opacity: 0.4; }
}

.landing-nav {
    width: 100%;
    padding: 20px 40px;
    z-index: 2;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    color: white;
    font-size: 22px;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.logo i {
    font-size: 28px;
    color: #6366f1;
}

.landing-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 2;
    padding: 0 20px;
    text-align: center;
    max-width: 700px;
}

.landing-content h1 {
    font-size: 56px;
    font-weight: 800;
    color: white;
    line-height: 1.1;
    margin-bottom: 16px;
    letter-spacing: -2px;
    background: linear-gradient(135deg, #ffffff 0%, #c7d2fe 50%, #818cf8 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.landing-subtitle {
    font-size: 18px;
    color: #94a3b8;
    margin-bottom: 40px;
    line-height: 1.6;
}

/* Upload Zone */
.upload-zone {
    width: 100%;
    max-width: 500px;
    padding: 48px 40px;
    border: 2px dashed rgba(99, 102, 241, 0.4);
    border-radius: var(--radius-xl);
    background: rgba(255, 255, 255, 0.03);
    backdrop-filter: blur(20px);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    transition: all var(--transition-normal);
    cursor: pointer;
}

.upload-zone:hover,
.upload-zone.drag-over {
    border-color: #6366f1;
    background: rgba(99, 102, 241, 0.08);
    transform: translateY(-2px);
}

.upload-icon-wrapper {
    width: 72px;
    height: 72px;
    border-radius: 50%;
    background: linear-gradient(135deg, #6366f1, #1a56db);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 8px;
}

.upload-icon-wrapper i {
    font-size: 28px;
    color: white;
}

.upload-zone h2 {
    font-size: 20px;
    color: white;
    font-weight: 600;
}

.upload-zone p {
    color: #94a3b8;
    font-size: 14px;
}

.upload-btn {
    margin-top: 12px;
    padding: 12px 28px;
    background: linear-gradient(135deg, #6366f1, #4f46e5);
    color: white;
    border-radius: var(--radius-full);
    font-weight: 600;
    font-size: 15px;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: all var(--transition-normal);
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.4);
}

.upload-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.5);
}

/* Features Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    margin-top: 40px;
    width: 100%;
    max-width: 500px;
}

.feature-card {
    padding: 16px 12px;
    background: rgba(255, 255, 255, 0.04);
    border-radius: var(--radius-md);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    transition: all var(--transition-normal);
    border: 1px solid rgba(255, 255, 255, 0.06);
}

.feature-card:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(99, 102, 241, 0.3);
    transform: translateY(-2px);
}

.feature-card i {
    font-size: 20px;
    color: #818cf8;
}

.feature-card span {
    font-size: 12px;
    color: #94a3b8;
    font-weight: 500;
}

/* =============================================
   Editor Screen
   ============================================= */
.editor-screen {
    height: 100vh;
    height: 100dvh;
    min-height: 0;
    display: flex;
    flex-direction: column;
}

/* Toolbar */
.toolbar {
    height: var(--toolbar-height);
    flex: 0 0 var(--toolbar-height);
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 16px;
    z-index: 100;
    box-shadow: var(--shadow-sm);
}

.toolbar-left {
    display: flex;
    align-items: center;
}

.logo-mini {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 700;
    font-size: 16px;
    color: var(--text-primary);
    cursor: pointer;
    padding: 6px 12px;
    border-radius: var(--radius-md);
    background: transparent;
    border: none;
    outline: none;
    transition: background var(--transition-fast);
}

.logo-mini:hover {
    background: var(--surface-hover);
}

.logo-mini i {
    color: var(--primary);
    font-size: 20px;
}

.toolbar-center {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    flex: 1;
    overflow-x: auto;
    scrollbar-width: none; /* RESP-02 FIX: allow horizontal scroll on small screens */
    padding: 0 10px;
}
.toolbar-center::-webkit-scrollbar {
    display: none;
}

.tool-group {
    display: flex;
    align-items: center;
    gap: 2px;
    background: var(--bg-primary);
    padding: 4px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
    margin: 0 auto;
    flex-wrap: nowrap;
}

.tool-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 7px 14px;
    border-radius: 6px;
    background: transparent;
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 13px;
    transition: all var(--transition-fast);
    position: relative;
    white-space: nowrap;
}

.tool-btn:hover {
    background: var(--surface);
    color: var(--text-primary);
    box-shadow: var(--shadow-sm);
}

.tool-btn.active {
    background: var(--primary);
    color: #000000;
    box-shadow: 0 2px 8px rgba(180, 255, 0, 0.3);
}

.tool-btn i:first-child {
    font-size: 14px;
}

.dropdown-arrow {
    font-size: 10px !important;
    margin-left: 2px;
    opacity: 0.7;
}

.toolbar-right {
    display: flex;
    align-items: center;
    gap: 8px;
}

.save-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 20px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: #000000;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 13px;
    transition: all var(--transition-fast);
    box-shadow: 0 2px 8px rgba(180, 255, 0, 0.3);
}

.save-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(180, 255, 0, 0.4);
}

.icon-btn {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-md);
    background: transparent;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.icon-btn:hover {
    background: var(--surface-hover);
    color: var(--text-primary);
}

/* Dropdown Menus */
.dropdown-menu {
    position: absolute;
    top: var(--toolbar-height);
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    padding: 6px;
    min-width: 180px;
    z-index: 200;
    display: none;
    animation: dropdownSlide 0.15s ease;
}

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

@keyframes dropdownSlide {
    from { opacity: 0; transform: translateY(-4px); }
    to { opacity: 1; transform: translateY(0); }
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: 10px;
    width: 100%;
    padding: 10px 14px;
    background: transparent;
    color: var(--text-primary);
    font-size: 13px;
    font-weight: 500;
    border-radius: 6px;
    transition: background var(--transition-fast);
}

.dropdown-item:hover {
    background: var(--primary-light);
    color: var(--primary);
}

.dropdown-item.active {
    background: var(--primary-light);
    color: var(--primary);
}

.dropdown-item i {
    width: 16px;
    text-align: center;
    font-size: 14px;
}

/* Properties Bar */
.properties-bar {
    height: var(--properties-height);
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    padding: 0 16px;
    z-index: 90;
}

.prop-group {
    display: flex;
    align-items: center;
    gap: 10px;
    height: 100%;
}

.prop-select {
    padding: 5px 10px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--surface);
    color: var(--text-primary);
    font-size: 13px;
    cursor: pointer;
    transition: border-color var(--transition-fast);
}

.prop-select:hover {
    border-color: var(--primary);
}

.prop-select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(180, 255, 0, 0.1);
}

.prop-btn {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-sm);
    background: transparent;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    border: 1px solid transparent;
}

.prop-btn:hover {
    background: var(--surface-hover);
    color: var(--text-primary);
}

.prop-btn.active {
    background: var(--primary-light);
    color: var(--primary);
    border-color: var(--primary);
}

.prop-divider {
    width: 1px;
    height: 24px;
    background: var(--border);
    margin: 0 4px;
}

.color-picker-wrapper {
    display: flex;
    align-items: center;
    gap: 6px;
}

.color-picker-wrapper label {
    font-size: 12px;
    color: var(--text-secondary);
    font-weight: 500;
}

.color-picker-wrapper input[type="color"] {
    width: 28px;
    height: 28px;
    border: 2px solid var(--border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    padding: 0;
    background: none;
}

.color-picker-wrapper input[type="color"]::-webkit-color-swatch-wrapper {
    padding: 2px;
}

.color-picker-wrapper input[type="color"]::-webkit-color-swatch {
    border-radius: 2px;
    border: none;
}

.prop-field {
    display: flex;
    align-items: center;
    gap: 6px;
}

.prop-field label {
    font-size: 12px;
    color: var(--text-secondary);
    font-weight: 500;
}

.prop-field input[type="range"] {
    width: 80px;
    height: 4px;
    -webkit-appearance: none;
    background: var(--border);
    border-radius: 2px;
    cursor: pointer;
}

.prop-field input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--primary);
    cursor: pointer;
}

.prop-field span {
    font-size: 11px;
    color: var(--text-muted);
    min-width: 30px;
}

.prop-hint {
    font-size: 13px;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 6px;
}

.prop-hint i {
    color: var(--primary);
}

/* =============================================
   Editor Body
   ============================================= */
.editor-body {
    flex: 1;
    min-width: 0;
    min-height: 0;
    display: flex;
    overflow: hidden;
}

/* Sidebar */
.sidebar {
    width: var(--sidebar-width);
    background: var(--surface);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    transition: width var(--transition-normal), opacity var(--transition-normal);
    overflow: hidden;
}

.sidebar.collapsed {
    width: 0;
    opacity: 0;
    border: none;
}

.sidebar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    border-bottom: 1px solid var(--border-light);
}

.sidebar-header h3 {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.icon-btn-sm {
    width: 28px;
    height: 28px;
    border-radius: var(--radius-sm);
    background: transparent;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    transition: all var(--transition-fast);
}

.icon-btn-sm:hover {
    background: var(--primary-light);
    color: var(--primary);
}

.page-thumbnails {
    flex: 1;
    overflow-y: auto;
    padding: 12px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.page-thumbnails::-webkit-scrollbar {
    width: 4px;
}

.page-thumbnails::-webkit-scrollbar-track {
    background: transparent;
}

.page-thumbnails::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 2px;
}

.thumbnail-item {
    border: 2px solid transparent;
    border-radius: var(--radius-md);
    overflow: hidden;
    cursor: pointer;
    transition: all var(--transition-fast);
    position: relative;
}

.thumbnail-item:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-md);
}

.thumbnail-item.active {
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(180, 255, 0, 0.2);
}

.thumbnail-item canvas {
    display: block;
    width: 100%;
    height: auto;
}

.thumbnail-label {
    text-align: center;
    font-size: 11px;
    color: var(--text-muted);
    padding: 4px 0;
    font-weight: 500;
}

.thumbnail-actions {
    position: absolute;
    top: 4px;
    right: 4px;
    display: none;
}

.thumbnail-item:hover .thumbnail-actions {
    display: flex;
    gap: 2px;
}

.thumb-action-btn {
    width: 22px;
    height: 22px;
    border-radius: 4px;
    background: rgba(0,0,0,0.6);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 10px;
    transition: background var(--transition-fast);
}

.thumb-action-btn:hover {
    background: var(--danger);
}

/* Viewer Area */
.viewer-area {
    flex: 1;
    min-width: 0;
    min-height: 0;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    background: var(--bg-primary);
}

/* Page Controls */
.page-controls {
    height: var(--page-controls-height);
    flex: 0 0 var(--page-controls-height);
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 24px;
    padding: 0 16px;
}

.page-nav {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 14px;
    font-weight: 600;
}

.page-indicator {
    color: var(--primary);
    min-width: 24px;
    text-align: center;
}

.page-separator {
    color: var(--text-muted);
}

.total-pages {
    color: var(--text-secondary);
}

.zoom-controls {
    display: flex;
    align-items: center;
    gap: 4px;
    background: var(--bg-primary);
    padding: 3px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
}

.ctrl-btn {
    width: 30px;
    height: 30px;
    border-radius: 6px;
    background: transparent;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    transition: all var(--transition-fast);
}

.ctrl-btn:hover {
    background: var(--surface);
    color: var(--text-primary);
    box-shadow: var(--shadow-sm);
}

.zoom-level {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-primary);
    width: 40px;
    min-width: 0;
    min-height: 28px;
    border: 0;
    background: transparent;
    text-align: center;
    appearance: textfield;
}

.zoom-level::-webkit-inner-spin-button,
.zoom-level::-webkit-outer-spin-button { appearance: none; margin: 0; }

.zoom-input-wrap {
    min-height: 30px;
    display: inline-flex;
    align-items: center;
    border-radius: 6px;
    padding: 0 5px 0 2px;
    color: var(--text-muted);
}

.zoom-input-wrap:focus-within {
    background: var(--surface);
    box-shadow: 0 0 0 1px var(--primary);
}

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

.insert-page-btn {
    width: auto !important;
    padding: 0 12px;
    gap: 6px;
    font-size: 12px;
    font-weight: 500;
    color: var(--text-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-full);
}

.insert-page-btn:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: var(--primary-light);
}

/* PDF Container */
.pdf-container {
    flex: 1;
    min-width: 0;
    min-height: 0;
    overflow: auto;
    display: flex;
    justify-content: center;
    padding: 24px;
    background: var(--bg-primary);
}

.pdf-container::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

.pdf-container::-webkit-scrollbar-track {
    background: transparent;
}

.pdf-container::-webkit-scrollbar-thumb {
    background: #c1c7cf;
    border-radius: 4px;
}

.pdf-page-wrapper {
    position: relative;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15), 0 0 1px rgba(0, 0, 0, 0.1);
    background: white;
    flex-shrink: 0;
}

#pdf-canvas {
    display: block;
}

/* Text Layer - Editable existing PDF text */
.text-layer {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 12;
    pointer-events: none;
    overflow: hidden;
}

.text-layer.interactive {
    pointer-events: none; /* Layer itself is passthrough */
}

.text-layer.interactive .text-layer-item {
    pointer-events: auto;
    cursor: text;
}

.text-layer-item {
    position: absolute;
    color: transparent;
    white-space: pre;
    line-height: 1.0;
    user-select: none;
    pointer-events: auto;
    cursor: grab;
    border-radius: 2px;
    transition: background 0.15s ease, box-shadow 0.15s ease;
    padding: 1px 0;
    transform-origin: left bottom;
}

.text-layer-item:active {
    cursor: grabbing;
}

.text-layer.interactive .text-layer-item:hover {
    background: rgba(180, 255, 0, 0.07);
    box-shadow: 0 0 0 2px rgba(180, 255, 0, 0.15);
}

.text-layer-item.editing {
    color: var(--text-primary) !important;
    background: var(--surface) !important;
    outline: 2px solid var(--primary);
    outline-offset: 1px;
    border-radius: 2px;
    z-index: 20;
    min-width: 20px;
    padding: 2px 3px;
    box-shadow: 0 2px 12px rgba(180, 255, 0, 0.15), 0 0 0 4px rgba(180, 255, 0, 0.06);
    pointer-events: auto !important;
    cursor: text;
    user-select: text;
    white-space: pre-wrap;
}

.text-layer-item.modified {
    color: var(--moved-text-color, #000000) !important;
    background: transparent !important;
    box-shadow: none;
}

.text-layer-item.modified:hover {
    background: rgba(16, 185, 129, 0.14);
    box-shadow: 0 0 0 2px rgba(16, 185, 129, 0.3);
}

/* Edit mode hint banner */
.text-edit-hint {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 12px;
    background: var(--primary-light);
    color: var(--primary);
    border-radius: var(--radius-full);
    font-size: 12px;
    font-weight: 500;
    margin-left: 12px;
    animation: fadeIn 0.2s ease;
}

.text-edit-hint i {
    font-size: 11px;
}

/* Annotation Layer */
.annotation-layer {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 10;
}

.annotation-layer.active {
    pointer-events: auto;
    cursor: crosshair;
}

.annotation-layer.select-mode {
    cursor: default;
}

.annotation-layer.text-mode {
    cursor: text;
}

/* Editable Elements on Canvas */
.edit-element {
    position: absolute;
    pointer-events: auto;
    cursor: move;
    user-select: none;
}

.edit-element:hover {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

.edit-element.selected {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

.edit-text {
    min-width: 50px;
    min-height: 20px;
    padding: 2px 4px;
    outline: none;
    border: none;
    background: transparent;
    cursor: text;
    white-space: pre-wrap;
    word-break: break-word;
}

.edit-text:focus {
    background: rgba(180, 255, 0, 0.04);
}

.edit-image {
    border: none;
    display: block;
}

.edit-link {
    color: var(--primary);
    text-decoration: underline;
    cursor: pointer;
    padding: 2px 4px;
    font-size: 14px;
}

.edit-comment {
    width: 28px;
    height: 28px;
    background: var(--warning);
    border-radius: 50% 50% 50% 0;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 14px;
    cursor: pointer;
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-fast);
}

.edit-comment:hover {
    transform: scale(1.1);
}

.comment-tooltip {
    position: absolute;
    top: -8px;
    left: 36px;
    background: var(--bg-dark);
    color: white;
    padding: 8px 12px;
    border-radius: var(--radius-md);
    font-size: 12px;
    max-width: 200px;
    white-space: pre-wrap;
    box-shadow: var(--shadow-lg);
    display: none;
    z-index: 50;
}

.edit-comment:hover .comment-tooltip {
    display: block;
}

.resize-handle {
    position: absolute;
    width: 10px;
    height: 10px;
    background: var(--primary);
    border: 2px solid white;
    border-radius: 2px;
    z-index: 20;
}

.resize-handle.se {
    bottom: -5px;
    right: -5px;
    cursor: se-resize;
}

.resize-handle.sw {
    bottom: -5px;
    left: -5px;
    cursor: sw-resize;
}

.resize-handle.ne {
    top: -5px;
    right: -5px;
    cursor: ne-resize;
}

.resize-handle.nw {
    top: -5px;
    left: -5px;
    cursor: nw-resize;
}

.delete-handle {
    position: absolute;
    top: -12px;
    right: -12px;
    width: 22px;
    height: 22px;
    background: var(--danger);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 10px;
    cursor: pointer;
    z-index: 20;
    opacity: 0;
    transition: opacity var(--transition-fast);
    box-shadow: var(--shadow-sm);
}

.drag-handle {
    position: absolute;
    top: -12px;
    left: -12px;
    width: 22px;
    height: 22px;
    background: var(--primary);
    color: var(--surface);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 10px;
    cursor: move;
    z-index: 20;
    opacity: 0;
    transition: opacity var(--transition-fast);
    box-shadow: var(--shadow-sm);
}

.edit-element:hover .delete-handle,
.edit-element.selected .delete-handle,
.edit-element:hover .drag-handle,
.edit-element.selected .drag-handle {
    opacity: 1;
}

/* Shape elements */
.edit-shape {
    pointer-events: auto;
}

.whiteout-rect {
    pointer-events: auto;
}

.pdf-page-wrapper.image-drop-active::after {
    content: 'Drop image here';
    position: absolute;
    inset: 8px;
    z-index: 40;
    display: grid;
    place-items: center;
    border: 3px dashed var(--primary);
    background: rgba(180, 255, 0, 0.12);
    color: #172000;
    font-size: 18px;
    font-weight: 800;
    pointer-events: none;
}

/* Form elements */
.edit-form-field {
    pointer-events: auto;
}

.form-text-field {
    border: 1px solid #aaa;
    padding: 4px 6px;
    background: #fefefe;
    font-size: 13px;
    border-radius: 3px;
    min-width: 120px;
    min-height: 28px;
}

.form-checkbox {
    width: 18px;
    height: 18px;
    cursor: pointer;
}

.form-radio {
    width: 18px;
    height: 18px;
    cursor: pointer;
}

/* Drawing canvas for freehand */
.freehand-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 5;
}

.freehand-canvas.active {
    pointer-events: auto;
    cursor: crosshair;
}

/* =============================================
   Modals
   ============================================= */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    animation: fadeIn 0.2s ease;
}

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

.modal {
    background: var(--surface);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    width: 560px;
    max-width: 90vw;
    animation: modalSlide 0.25s ease;
}

.modal-sm {
    width: 420px;
}

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

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 18px 24px;
    border-bottom: 1px solid var(--border);
}

.modal-header h3 {
    font-size: 17px;
    font-weight: 700;
}

.modal-close {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-sm);
    background: transparent;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

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

.modal-tabs {
    display: flex;
    border-bottom: 1px solid var(--border);
    padding: 0 24px;
}

.modal-tab {
    padding: 12px 20px;
    background: transparent;
    color: var(--text-secondary);
    font-weight: 500;
    border-bottom: 2px solid transparent;
    transition: all var(--transition-fast);
}

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

.modal-tab.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
}

.modal-body {
    padding: 24px;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    padding: 16px 24px;
    border-top: 1px solid var(--border);
}

/* Signature Canvas */
#sig-canvas {
    width: 100%;
    height: 200px;
    border: 2px dashed var(--border);
    border-radius: var(--radius-md);
    cursor: crosshair;
    background: #fafbfc;
}

.sig-tab-content {
    display: none;
}

.sig-tab-content.active {
    display: block;
}

.sig-actions {
    display: flex;
    justify-content: flex-end;
    margin-top: 12px;
}

.sig-text-input {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    font-size: 24px;
    text-align: center;
    margin-bottom: 16px;
}

.sig-font-options {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.sig-font {
    padding: 10px 16px;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background: transparent;
    font-size: 20px;
    transition: all var(--transition-fast);
    flex: 1;
    text-align: center;
}

.sig-font:hover {
    border-color: var(--primary);
}

.sig-font.active {
    border-color: var(--primary);
    background: var(--primary-light);
}

.sig-upload-zone {
    border: 2px dashed var(--border);
    border-radius: var(--radius-md);
    padding: 40px;
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.sig-upload-zone:hover {
    border-color: var(--primary);
    background: var(--primary-light);
}

.sig-upload-zone i {
    font-size: 32px;
    color: var(--text-muted);
    margin-bottom: 8px;
}

.sig-upload-zone p {
    color: var(--text-secondary);
}

/* Form elements */
.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 6px;
}

.form-input {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    font-size: 14px;
    transition: border-color var(--transition-fast);
}

.form-input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(180, 255, 0, 0.1);
}

.form-textarea {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    font-size: 14px;
    min-height: 100px;
    resize: vertical;
    transition: border-color var(--transition-fast);
}

.form-textarea:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(180, 255, 0, 0.1);
}

/* Buttons */
.btn-primary {
    padding: 10px 20px;
    background: var(--primary);
    color: #000000;
    border-radius: var(--radius-md);
    font-weight: 600;
    transition: all var(--transition-fast);
}

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

.btn-secondary {
    padding: 10px 20px;
    background: transparent;
    color: var(--text-secondary);
    border-radius: var(--radius-md);
    font-weight: 600;
    border: 1px solid var(--border);
    transition: all var(--transition-fast);
}

.btn-secondary:hover {
    background: var(--surface-hover);
    color: var(--text-primary);
}

/* =============================================
   Toast Notifications
   ============================================= */
.toast-container {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 2000;
    display: flex;
    flex-direction: column-reverse;
    gap: 8px;
}

.toast {
    padding: 14px 20px;
    background: var(--bg-dark);
    color: white;
    border-radius: var(--radius-md);
    font-size: 13px;
    font-weight: 500;
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: 10px;
    animation: toastSlide 0.3s ease;
    min-width: 250px;
}

.toast.success {
    border-left: 4px solid var(--success);
}

.toast.error {
    border-left: 4px solid var(--danger);
}

.toast.info {
    border-left: 4px solid var(--primary);
}

@keyframes toastSlide {
    from { opacity: 0; transform: translateX(20px); }
    to { opacity: 1; transform: translateX(0); }
}

/* =============================================
   Loading Overlay
   ============================================= */
.loading-overlay {
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(8px);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 3000;
    gap: 16px;
}

.loading-spinner {
    width: 48px;
    height: 48px;
    border: 4px solid rgba(255, 255, 255, 0.2);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.loading-text {
    color: white;
    font-size: 16px;
    font-weight: 500;
}

/* =============================================
   Responsive
   ============================================= */
@media (max-width: 900px) {
    .tool-btn span {
        display: none;
    }
    .tool-btn {
        padding: 7px 10px;
    }
    .save-btn span {
        display: none;
    }
    .sidebar {
        width: 120px;
    }
    .landing-content h1 {
        font-size: 36px;
    }
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 600px) {
    .toolbar-center {
        overflow-x: auto;
    }
    .tool-group {
        gap: 0;
    }
    .tool-btn {
        padding: 6px 8px;
    }
    .dropdown-arrow {
        display: none;
    }
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .landing-content h1 {
        font-size: 28px;
    }
}

/* Highlight overlay for text highlight mode */
.highlight-overlay {
    position: absolute;
    pointer-events: auto;
    cursor: pointer;
    opacity: 0.35;
    border-radius: 2px;
}

.highlight-overlay:hover {
    opacity: 0.5;
}

/* SVG shape rendering */
.shape-svg {
    position: absolute;
    pointer-events: auto;
    overflow: visible;
}

.shape-svg:hover {
    filter: drop-shadow(0 0 3px rgba(180, 255, 0, 0.4));
}

.realtime-whiteout {
    position: absolute;
    background: white;
    z-index: 11;
    pointer-events: none;
}

/* =============================================
   Ambixous-branded landing page
   ============================================= */
.landing-screen {
    min-height: 100vh;
    height: auto;
    overflow-x: hidden;
    overflow-y: auto;
    align-items: stretch;
    background: radial-gradient(circle at 82% 18%, rgba(180, 255, 0, 0.12), transparent 28%),
                linear-gradient(150deg, #010409 0%, #070b0e 55%, #101702 100%);
}

.brand-shell {
    width: min(100% - 32px, 1280px);
    margin-inline: auto;
}

.ambixous-site-header {
    position: relative;
    z-index: 30;
    width: 100%;
    background: rgba(1, 4, 9, 0.94);
    border-bottom: 1px solid rgba(176, 176, 176, 0.16);
    backdrop-filter: blur(16px);
}

.brand-nav {
    min-height: 72px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 28px;
}

.ambixous-brand { display: inline-flex; align-items: center; flex: 0 0 auto; }
.ambixous-brand img, .footer-brand img { display: block; object-fit: contain; }
.brand-links { display: flex; align-items: center; justify-content: center; gap: 26px; }
.brand-links a, .ambixous-site-footer a { color: #b0b0b0; text-decoration: none; transition: color .2s ease; }
.brand-links a { color: #f8f8f8; font-size: 14px; font-weight: 600; }
.brand-links a:hover, .ambixous-site-footer a:hover { color: #b4ff00; }
.brand-cta {
    flex: 0 0 auto;
    min-height: 42px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0 20px;
    border-radius: 9px;
    background: #b4ff00;
    color: #010409;
    font-size: 13px;
    font-weight: 800;
    text-decoration: none;
    box-shadow: 0 12px 35px rgba(180, 255, 0, .14);
}

.landing-main { position: relative; z-index: 2; width: 100%; }
.landing-content { max-width: 920px; padding: 76px 24px 48px; margin-inline: auto; }
.product-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 18px;
    color: #b4ff00;
    font-size: 13px;
    font-weight: 800;
    letter-spacing: .12em;
    text-transform: uppercase;
}
.product-eyebrow span { color: #f8f8f8; font-weight: 600; letter-spacing: .05em; }
.product-eyebrow i { font-size: 16px; }
.landing-content h1 {
    max-width: 860px;
    font-size: clamp(42px, 6.6vw, 72px);
    letter-spacing: -.055em;
    background: linear-gradient(120deg, #fff 10%, #f4ffd5 53%, #b4ff00 100%);
    -webkit-background-clip: text;
    background-clip: text;
}
.landing-subtitle { max-width: 760px; color: #b0b0b0; font-size: clamp(16px, 2vw, 20px); }
.upload-zone { border-color: rgba(180, 255, 0, .38); background: rgba(255,255,255,.035); }
.upload-zone:hover, .upload-zone.drag-over { border-color: #b4ff00; background: rgba(180,255,0,.07); }
.upload-icon-wrapper { background: linear-gradient(135deg, #b4ff00, #7eb700); color: #010409; box-shadow: 0 15px 44px rgba(180,255,0,.2); }
.upload-icon-wrapper i { color: #010409; }
.upload-btn { background: #b4ff00; color: #010409; }
.upload-btn:hover { background: #c8ff43; }
.privacy-points { display: flex; justify-content: center; flex-wrap: wrap; gap: 10px 24px; margin: 20px 0 42px; color: #b0b0b0; font-size: 12px; }
.privacy-points i { color: #b4ff00; margin-right: 5px; }
.features-title { margin-bottom: 18px; color: #f8f8f8; font-size: 22px; }
.feature-card { border: 1px solid rgba(176,176,176,.14); background: rgba(255,255,255,.035); color: #f8f8f8; }
.feature-card i { color: #b4ff00; }
.landing-seo { width: min(100% - 32px, 1180px); margin: 0 auto 76px; padding: 56px; border: 1px solid rgba(176,176,176,.12); border-radius: 28px; background: rgba(8,12,14,.78); box-shadow: 0 26px 80px rgba(0,0,0,.32); }
.landing-seo > div:first-child { max-width: 760px; }
.section-kicker, .nps-eyebrow { color: #b4ff00; font-size: 12px; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
.landing-seo h2 { margin: 10px 0 14px; color: #f8f8f8; font-size: clamp(26px, 4vw, 40px); letter-spacing: -.03em; }
.landing-seo p { color: #b0b0b0; line-height: 1.75; }
.seo-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 38px; }
.seo-cards article { padding: 24px; border: 1px solid rgba(176,176,176,.12); border-radius: 18px; background: rgba(255,255,255,.025); }
.seo-cards i { color: #b4ff00; font-size: 23px; }
.seo-cards h3 { margin: 17px 0 9px; color: #f8f8f8; font-size: 17px; }
.seo-cards p { font-size: 13px; }
.landing-faq { margin-top: 54px; }
.landing-faq h2 { font-size: 27px; }
.landing-faq details { border-top: 1px solid rgba(176,176,176,.13); padding: 17px 0; }
.landing-faq details:last-child { border-bottom: 1px solid rgba(176,176,176,.13); }
.landing-faq summary { color: #f8f8f8; font-weight: 700; cursor: pointer; }
.landing-faq details p { margin-top: 10px; font-size: 14px; }

.ambixous-site-footer { position: relative; z-index: 2; width: 100%; background: #010409; border-top: 1px solid rgba(255,255,255,.06); }
.footer-shell { width: 100%; max-width: 1280px; margin-inline: auto; padding: 64px 48px; }
.footer-grid { display: grid; grid-template-columns: 5fr 3fr 4fr; gap: 48px; }
.footer-brand { display: flex; flex-direction: column; align-items: flex-start; gap: 24px; }
.footer-brand p { max-width: 384px; color: #b0b0b0; font-size: 14px; line-height: 1.625; }
.footer-address { display: flex; flex-direction: column; gap: 4px; }
.footer-brand address { max-width: 448px; color: rgba(176,176,176,.7); font-size: 12px; font-style: normal; line-height: 1.625; }
.footer-brand small { color: rgba(176,176,176,.5); font-size: 12px; }
.footer-community-image { display: block; width: 280px; height: 80px; border-radius: 12px; object-fit: cover; opacity: .6; }
.footer-grid h3 { color: #f8f8f8; font-size: 14px; font-weight: 600; letter-spacing: .025em; }
.footer-navigation { display: flex; flex-direction: column; align-items: flex-start; gap: 12px; padding-left: 16px; }
.footer-navigation h3 { margin-bottom: 12px; }
.footer-grid a { color: #b0b0b0; font-size: 14px; }
.footer-connect { display: flex; flex-direction: column; align-items: flex-start; gap: 16px; }
.footer-connect h3 { margin-bottom: 8px; }
.social-links { display: flex; align-items: center; gap: 20px; }
.social-links a { display: inline-flex; align-items: center; justify-content: center; min-width: 20px; min-height: 20px; font-size: 20px; }
.footer-bottom { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-top: 48px; padding-top: 32px; border-top: 1px solid rgba(255,255,255,.06); color: rgba(176,176,176,.6); font-size: 12px; }
.footer-bottom span:last-child { display: flex; gap: 24px; }

.logo-mini small { color: var(--text-muted); font-size: 9px; font-weight: 600; }

/* Existing PDF text selection and destructive replacement. */
.text-layer-item.selected:not(.editing) { outline: 2px solid var(--primary); outline-offset: 2px; background: rgba(180,255,0,.12); }
.text-layer-item.deleted { opacity: 0; pointer-events: none; }

/* Download-time NPS */
.nps-modal-card { width: min(620px, calc(100vw - 28px)); }
.nps-modal-card .modal-header { align-items: flex-start; }
.nps-modal-card h3 { margin-top: 6px; max-width: 470px; font-size: 22px; }
.nps-scale { display: grid; grid-template-columns: repeat(11, 1fr); gap: 6px; margin-top: 22px; }
.nps-score { min-width: 0; min-height: 40px; border: 1px solid var(--border); border-radius: 8px; background: var(--surface); color: var(--text-primary); font-weight: 700; }
.nps-score:hover, .nps-score.selected { border-color: var(--primary); background: var(--primary); color: var(--text-inverse); }
.nps-labels { display: flex; justify-content: space-between; margin: 7px 2px 22px; color: var(--text-muted); font-size: 10px; }
.nps-reasons { border: 0; padding: 0; }
.nps-reasons legend { margin-bottom: 10px; color: var(--text-secondary); font-size: 12px; font-weight: 700; }
.nps-reasons label { display: inline-flex; align-items: center; gap: 5px; margin: 0 12px 8px 0; color: var(--text-secondary); font-size: 12px; }
.nps-reasons input { min-width: 16px; min-height: 16px; accent-color: var(--primary); }
.nps-privacy { margin-top: 14px; color: var(--text-muted); font-size: 10px; line-height: 1.5; }
.nps-status { min-height: 18px; margin-top: 8px; color: var(--text-secondary); font-size: 11px; }

@media (max-width: 980px) {
    .brand-links { display: none; }
    .landing-content { padding-top: 54px; }
    .seo-cards { grid-template-columns: 1fr; }
    .footer-shell { padding-inline: 32px; }
    .footer-grid { gap: 24px; }
}

@media (max-width: 700px) {
    .brand-nav { min-height: 64px; }
    .brand-cta { padding: 0 13px; font-size: 11px; }
    .landing-content h1 { font-size: 38px; }
    .landing-content { padding-inline: 16px; }
    .upload-zone { padding: 34px 18px; }
    .landing-seo { padding: 30px 22px; }
    .footer-shell { padding: 48px 16px; }
    .footer-grid { grid-template-columns: 1fr; gap: 40px; }
    .footer-navigation { padding-left: 0; }
    .footer-bottom { flex-direction: column; align-items: flex-start; }
    .nps-scale { grid-template-columns: repeat(6, 1fr); }
}

@media (min-width: 640px) and (max-width: 767px) {
    .footer-shell { padding: 48px 24px; }
    .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 40px; }
    .footer-bottom { flex-direction: row; align-items: center; }
}