/* ==========================================================================
   PRO JPG TO PDF STUDIO - FULLSCREEN STYLESHEET
   ========================================================================== */

/* --- CSS Variables & Themes --- */
:root {
    --font-main: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;

    /* Theme - Dark (Default) */
    --bg-app: #0b0f19;
    --bg-header: #111827;
    --bg-panel: #1e293b;
    --bg-panel-header: #0f172a;
    --bg-surface: #1e293b;
    --bg-hover: #334155;
    --bg-input: #0f172a;
    --bg-card: #182232;

    --border-color: #334155;
    --border-subtle: #1e293b;
    --border-focus: #3b82f6;

    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    
    --accent-blue: #3b82f6;
    --accent-blue-hover: #2563eb;
    --accent-green: #10b981;
    --accent-green-hover: #059669;
    --accent-red: #ef4444;
    --accent-purple: #8b5cf6;

    --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -1px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5), 0 4px 6px -2px rgba(0, 0, 0, 0.3);

    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;

    --transition-fast: 0.15s ease;
    --transition-normal: 0.25s ease;
}

body.light-theme {
    --bg-app: #f1f5f9;
    --bg-header: #ffffff;
    --bg-panel: #ffffff;
    --bg-panel-header: #f8fafc;
    --bg-surface: #ffffff;
    --bg-hover: #e2e8f0;
    --bg-input: #ffffff;
    --bg-card: #f8fafc;

    --border-color: #cbd5e1;
    --border-subtle: #e2e8f0;
    --border-focus: #2563eb;

    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #94a3b8;

    --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 10px rgba(0,0,0,0.08);
    --shadow-lg: 0 10px 25px rgba(0,0,0,0.12);
}

/* --- Global Reset & Shortcode Fullscreen Container --- */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html, body {
    width: 100vw;
    height: 100vh;
    overflow: hidden;
    font-family: var(--font-main);
    background-color: var(--bg-app);
    color: var(--text-primary);
    -webkit-font-smoothing: antialiased;
}

.app-container {
    display: flex;
    flex-direction: column;
    width: 100vw;
    height: 100vh;
    min-height: 100vh;
    position: absolute;
    inset: 0;
}

/* Utility Helpers */
.hidden { display: none !important; }
.hidden-input { display: none; }
.accent-text { color: var(--accent-red); }

/* --- Top Navigation Header --- */
.app-header {
    min-height: 60px;
    height: auto;
    background-color: var(--bg-header);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 20px;
    z-index: 50;
    box-shadow: var(--shadow-sm);
    flex-shrink: 0;
    gap: 12px;
    flex-wrap: wrap;
}

.brand-section {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-icon {
    width: 38px;
    height: 38px;
    background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    color: #ffffff;
    box-shadow: 0 4px 10px rgba(239, 68, 68, 0.35);
}

.brand-titles h1 {
    font-size: 18px;
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -0.02em;
}

.brand-titles .badge {
    font-size: 10px;
    font-weight: 600;
    color: var(--accent-green);
    background: rgba(16, 185, 129, 0.12);
    padding: 2px 6px;
    border-radius: 10px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

.image-count-pill {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 13px;
    color: var(--text-primary);
}

.image-count-pill i { color: var(--accent-red); }
.image-count-pill .file-size { color: var(--text-secondary); font-size: 11px; }

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    border: 1px solid transparent;
    transition: all var(--transition-fast);
    user-select: none;
    white-space: nowrap;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed !important;
}

.btn-primary {
    background-color: var(--accent-blue);
    color: #ffffff;
}
.btn-primary:hover:not(:disabled) {
    background-color: var(--accent-blue-hover);
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.35);
}

.btn-success {
    background-color: var(--accent-green);
    color: #ffffff;
}
.btn-success:hover:not(:disabled) {
    background-color: var(--accent-green-hover);
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.35);
}

.btn-secondary {
    background-color: var(--bg-surface);
    color: var(--text-primary);
    border-color: var(--border-color);
}
.btn-secondary:hover:not(:disabled) {
    background-color: var(--bg-hover);
    border-color: var(--text-secondary);
}

.btn-outline {
    background: transparent;
    color: var(--accent-blue);
    border-color: var(--accent-blue);
}
.btn-outline:hover:not(:disabled) {
    background: rgba(59, 130, 246, 0.1);
}

.btn-lg {
    padding: 12px 24px;
    font-size: 15px;
    border-radius: var(--radius-md);
}

.btn-theme-toggle {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
    background-color: var(--bg-surface);
    color: var(--text-primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    transition: var(--transition-fast);
}

.btn-theme-toggle:hover {
    background-color: var(--bg-hover);
    color: var(--accent-blue);
}

/* --- Main Workspace Layout --- */
.app-workspace {
    flex: 1;
    display: flex;
    overflow: hidden;
    position: relative;
}

/* Left Sidebar Panel */
.sidebar-panel {
    width: 330px;
    min-width: 300px;
    max-width: 360px;
    background-color: var(--bg-panel);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    height: 100%;
    overflow: hidden;
    flex-shrink: 0;
}

.sidebar-header {
    height: 48px;
    background-color: var(--bg-panel-header);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 16px;
    flex-shrink: 0;
}

.sidebar-header h3 {
    font-size: 13px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 8px;
}

.btn-text-sm {
    background: none;
    border: none;
    color: var(--accent-blue);
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
}
.btn-text-sm:hover { text-decoration: underline; }

.sidebar-scroll {
    flex: 1;
    overflow-y: auto;
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

/* Setting Cards */
.setting-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 14px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.card-title {
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 8px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--border-subtle);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.form-group label {
    font-size: 11.5px;
    font-weight: 600;
    color: var(--text-primary);
}

.select-input, .text-input {
    background-color: var(--bg-input);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 8px 10px;
    border-radius: var(--radius-sm);
    font-size: 12px;
    outline: none;
    width: 100%;
}

.select-input:focus, .text-input:focus {
    border-color: var(--accent-blue);
}

/* Segmented Buttons */
.segmented-control {
    display: flex;
    background-color: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 2px;
    gap: 2px;
}

.segment-btn {
    flex: 1;
    text-align: center;
    padding: 6px 4px;
    font-size: 11px;
    font-weight: 600;
    color: var(--text-secondary);
    cursor: pointer;
    border-radius: 4px;
    transition: var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
    user-select: none;
}

.segment-btn input { display: none; }

.segment-btn.active, .segment-btn:has(input:checked) {
    background-color: var(--accent-blue);
    color: #ffffff;
}

/* Range Slider & Color Picker */
.slider-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.slider-value {
    font-family: var(--font-mono);
    font-size: 12px;
    font-weight: 700;
    color: var(--accent-blue);
}

.range-slider {
    width: 100%;
    accent-color: var(--accent-blue);
    cursor: pointer;
}

.slider-hint {
    display: flex;
    justify-content: space-between;
    font-size: 10px;
    color: var(--text-muted);
}

.color-picker-wrapper {
    display: flex;
    align-items: center;
    gap: 10px;
}

.color-input {
    width: 36px;
    height: 32px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    background: none;
    cursor: pointer;
    padding: 2px;
}

.color-value-text {
    font-size: 12px;
    color: var(--text-secondary);
}

.checkbox-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.checkbox-label {
    font-size: 12px;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
}

/* Right Gallery Panel */
.gallery-panel {
    flex: 1;
    display: flex;
    flex-direction: column;
    background-color: var(--bg-panel);
    overflow: hidden;
}

.panel-toolbar {
    min-height: 48px;
    height: auto;
    background-color: var(--bg-panel-header);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 6px 16px;
    flex-shrink: 0;
    gap: 12px;
    flex-wrap: wrap;
}

/* Tab Switcher */
.tab-switcher {
    display: flex;
    gap: 4px;
    background-color: var(--bg-input);
    border: 1px solid var(--border-color);
    padding: 3px;
    border-radius: var(--radius-sm);
}

.tab-btn {
    padding: 6px 14px;
    font-size: 12px;
    font-weight: 600;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    border-radius: 4px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition-fast);
}

.tab-btn.active {
    background-color: var(--accent-blue);
    color: #ffffff;
}

.gallery-actions {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.btn-tool-sm {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 5px 12px;
    border-radius: var(--radius-sm);
    font-size: 11.5px;
    font-weight: 600;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: var(--transition-fast);
}

.btn-tool-sm:hover {
    background-color: var(--bg-hover);
    border-color: var(--text-secondary);
}

.btn-danger-soft { color: var(--accent-red); }
.btn-danger-soft:hover {
    background-color: var(--accent-red) !important;
    color: #ffffff !important;
    border-color: var(--accent-red) !important;
}

/* Tab Content */
.tab-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    position: relative;
}

/* Dropzone Box */
.dropzone-box {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 30px;
    background-color: var(--bg-app);
}

.dropzone-inner {
    border: 2px dashed var(--border-color);
    border-radius: var(--radius-lg);
    background-color: var(--bg-panel);
    padding: 50px 30px;
    text-align: center;
    max-width: 540px;
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    transition: all var(--transition-normal);
}

.dropzone-inner.dragover {
    border-color: var(--accent-blue);
    background-color: rgba(59, 130, 246, 0.08);
    transform: scale(1.02);
}

.drop-icon {
    width: 70px;
    height: 70px;
    background: rgba(239, 68, 68, 0.12);
    color: var(--accent-red);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    margin-bottom: 20px;
}

.dropzone-inner h2 {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 8px;
}

.dropzone-inner p {
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 24px;
}

.dropzone-buttons {
    display: flex;
    gap: 12px;
    margin-bottom: 20px;
    flex-wrap: wrap;
    justify-content: center;
}

.drop-note {
    font-size: 11.5px;
    color: var(--accent-green);
    display: flex;
    align-items: center;
    gap: 6px;
}

/* Interactive Image Grid */
.image-grid-container {
    flex: 1;
    overflow-y: auto;
    padding: 20px;
    background-color: var(--bg-app);
}

.grid-hint {
    font-size: 12px;
    color: var(--text-secondary);
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--bg-panel);
    padding: 8px 14px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
}

.image-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 16px;
}

.image-card {
    background-color: var(--bg-panel);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-fast);
    position: relative;
}

.image-card:hover {
    border-color: var(--accent-blue);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.card-num-badge {
    position: absolute;
    top: 8px;
    left: 8px;
    background: rgba(15, 23, 42, 0.85);
    color: #ffffff;
    font-size: 11px;
    font-weight: 700;
    padding: 2px 8px;
    border-radius: 10px;
    backdrop-filter: blur(4px);
    z-index: 10;
}

.card-preview-wrap {
    height: 160px;
    background-color: #090d16;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    padding: 8px;
    position: relative;
}

.card-preview-wrap img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    transition: transform 0.2s ease;
}

.card-info {
    padding: 10px;
    display: flex;
    flex-direction: column;
    gap: 4px;
    border-top: 1px solid var(--border-color);
    background-color: var(--bg-card);
}

.card-filename {
    font-size: 12px;
    font-weight: 600;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.card-meta {
    font-size: 10.5px;
    color: var(--text-secondary);
    display: flex;
    justify-content: space-between;
}

.card-controls {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 6px 8px;
    border-top: 1px solid var(--border-color);
    background-color: var(--bg-panel-header);
}

.btn-icon {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 12px;
    transition: var(--transition-fast);
}

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

.btn-icon.btn-remove:hover {
    color: var(--accent-red);
    background-color: rgba(239, 68, 68, 0.15);
}

/* PDF Preview Tab */
.pdf-preview-scroll {
    flex: 1;
    overflow-y: auto;
    padding: 24px;
    background-color: #090d16;
    display: flex;
    justify-content: center;
}

.pdf-pages-container {
    display: flex;
    flex-direction: column;
    gap: 20px;
    align-items: center;
    max-width: 800px;
    width: 100%;
}

.preview-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    margin: auto;
    text-align: center;
    padding: 60px 20px;
    color: var(--text-muted);
}

.preview-placeholder i {
    font-size: 50px;
    margin-bottom: 16px;
    color: var(--accent-red);
}

.pdf-page-sheet {
    background-color: #ffffff;
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
    border-radius: 4px;
    overflow: hidden;
    position: relative;
}

/* Loading Overlay */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(11, 15, 25, 0.85);
    backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.spinner-card {
    background-color: var(--bg-panel);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 30px;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    box-shadow: var(--shadow-lg);
    width: 320px;
}

.spinner {
    width: 44px;
    height: 44px;
    border: 4px solid var(--border-color);
    border-top-color: var(--accent-red);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin-bottom: 16px;
}

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

.spinner-card h4 { font-size: 16px; margin-bottom: 6px; }
.spinner-card p { font-size: 12px; color: var(--text-secondary); margin-bottom: 16px; }

.progress-bar-bg {
    width: 100%;
    height: 6px;
    background-color: var(--bg-input);
    border-radius: 3px;
    overflow: hidden;
}

.progress-bar-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--accent-blue), var(--accent-red));
    transition: width 0.3s ease;
}

/* Toast Container */
.toast-container {
    position: fixed;
    bottom: 20px;
    right: 20px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    z-index: 1100;
}

.toast {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 18px;
    background-color: var(--bg-panel);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-left: 4px solid var(--accent-blue);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-lg);
    font-size: 13px;
    animation: slideInRight 0.3s ease-out;
    max-width: 360px;
}

.toast.toast-success { border-left-color: var(--accent-green); }
.toast.toast-error { border-left-color: var(--accent-red); }
.toast.toast-info { border-left-color: var(--accent-blue); }

@keyframes slideInRight {
    from { opacity: 0; transform: translateX(50px); }
    to { opacity: 1; transform: translateX(0); }
}

/* Custom Scrollbars */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: var(--bg-panel-header); }
::-webkit-scrollbar-thumb { background: var(--border-color); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }