/* ==========================================================================
   LabelCraft Studio - Design System & Modern UI
   ========================================================================== */

:root {
    --bg-dark: #0f172a;
    --bg-card: rgba(30, 41, 59, 0.7);
    --bg-card-hover: rgba(30, 41, 59, 0.85);
    --border-glass: rgba(255, 255, 255, 0.12);
    
    --accent-primary: #6366f1;
    --accent-primary-hover: #4f46e5;
    --accent-secondary: #ec4899;
    --accent-emerald: #10b981;
    --accent-amber: #f59e0b;
    
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --text-dim: #64748b;
    
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 20px;
    
    --shadow-glow: 0 8px 32px rgba(99, 102, 241, 0.18);
    --shadow-card: 0 10px 25px -5px rgba(0, 0, 0, 0.3);
    
    --font-ui: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

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

body {
    font-family: var(--font-ui);
    background-color: var(--bg-dark);
    background-image: 
        radial-gradient(at 0% 0%, rgba(99, 102, 241, 0.15) 0px, transparent 50%),
        radial-gradient(at 100% 100%, rgba(236, 72, 153, 0.12) 0px, transparent 50%),
        radial-gradient(at 50% 50%, rgba(16, 185, 129, 0.08) 0px, transparent 50%);
    background-attachment: fixed;
    color: var(--text-main);
    min-height: 100vh;
    line-height: 1.5;
}

.app-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 1.5rem 2rem 3rem 2rem;
}

/* Header */
.app-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.25rem 2rem;
    background: var(--bg-card);
    backdrop-filter: blur(16px);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
    margin-bottom: 1.5rem;
}

.logo-section {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.logo-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: #fff;
    box-shadow: var(--shadow-glow);
}

.app-header h1 {
    font-size: 1.6rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    background: linear-gradient(120deg, #ffffff, #cbd5e1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.app-header .subtitle {
    font-size: 0.875rem;
    color: var(--text-muted);
}

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

/* Navigation Tabs */
.app-nav {
    display: flex;
    gap: 0.5rem;
    background: rgba(15, 23, 42, 0.6);
    padding: 0.4rem;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-glass);
    margin-bottom: 1.5rem;
}

.nav-tab {
    flex: 1;
    padding: 0.85rem 1rem;
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-family: var(--font-ui);
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.6rem;
}

.nav-tab:hover {
    color: var(--text-main);
    background: rgba(255, 255, 255, 0.05);
}

.nav-tab.active {
    background: linear-gradient(135deg, var(--accent-primary), #4338ca);
    color: #ffffff;
    box-shadow: var(--shadow-glow);
}

/* Glass Cards */
.glass-card {
    background: var(--bg-card);
    backdrop-filter: blur(16px);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
    padding: 1.5rem;
}

/* Buttons */
.btn {
    padding: 0.65rem 1.25rem;
    border-radius: var(--radius-sm);
    font-family: var(--font-ui);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    border: none;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-primary-hover));
    color: #ffffff;
    box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 10px 25px rgba(99, 102, 241, 0.35);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.08);
    color: var(--text-main);
    border: 1px solid var(--border-glass);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.15);
}

.btn-accent {
    background: linear-gradient(135deg, var(--accent-emerald), #059669);
    color: #ffffff;
}

.btn-accent:hover {
    transform: translateY(-1px);
    box-shadow: 0 8px 20px rgba(16, 185, 129, 0.3);
}

/* Tab Panels */
.tab-panel {
    display: none;
}

.tab-panel.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(6px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Panel Layouts */
.panel-grid {
    display: grid;
    grid-template-columns: 1.6fr 1fr;
    gap: 1.5rem;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.25rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--border-glass);
}

.card-header h2 {
    font-size: 1.2rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.6rem;
}

.badge {
    padding: 0.25rem 0.65rem;
    background: rgba(99, 102, 241, 0.2);
    border: 1px solid rgba(99, 102, 241, 0.4);
    color: #a5b4fc;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: 20px;
}

.badge-outline {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--border-glass);
    color: var(--text-muted);
}

/* Drag & Drop Zone */
.drop-zone {
    border: 2px dashed rgba(99, 102, 241, 0.4);
    border-radius: var(--radius-md);
    padding: 2rem;
    text-align: center;
    background: rgba(15, 23, 42, 0.4);
    cursor: pointer;
    transition: all 0.25 ease;
}

.drop-zone:hover, .drop-zone.dragover {
    border-color: var(--accent-primary);
    background: rgba(99, 102, 241, 0.08);
}

.drop-icon {
    font-size: 2.2rem;
    color: var(--accent-primary);
    margin-bottom: 0.5rem;
}

.drop-zone .subtext {
    font-size: 0.8rem;
    color: var(--text-dim);
    display: block;
    margin-top: 0.2rem;
}

.divider {
    display: flex;
    align-items: center;
    text-align: center;
    margin: 1.25rem 0;
}

.divider::before, .divider::after {
    content: '';
    flex: 1;
    border-bottom: 1px solid var(--border-glass);
}

.divider span {
    padding: 0 0.75rem;
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--text-dim);
    letter-spacing: 0.05em;
}

/* Form Controls */
.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-muted);
    margin-bottom: 0.4rem;
}

.form-control, textarea {
    width: 100%;
    padding: 0.75rem 0.9rem;
    background: rgba(15, 23, 42, 0.8);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-sm);
    color: var(--text-main);
    font-family: var(--font-ui);
    font-size: 0.95rem;
    transition: border-color 0.2s ease;
}

.form-control:focus, textarea:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

textarea {
    resize: vertical;
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    font-size: 0.85rem;
    color: var(--text-muted);
    cursor: pointer;
}

.checkbox-label input[type="checkbox"] {
    width: 16px;
    height: 16px;
    accent-color: var(--accent-primary);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.range-val {
    font-size: 0.8rem;
    color: var(--accent-primary);
    font-weight: 600;
    margin-left: 0.4rem;
}

/* Preset Cards */
.section-desc {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-bottom: 1rem;
}

.preset-buttons {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.preset-btn {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.9rem 1.1rem;
    background: rgba(15, 23, 42, 0.5);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-md);
    color: var(--text-main);
    cursor: pointer;
    transition: all 0.2s ease;
    text-align: left;
}

.preset-btn:hover {
    background: rgba(99, 102, 241, 0.12);
    border-color: var(--accent-primary);
    transform: translateX(4px);
}

.preset-btn i {
    font-size: 1.4rem;
    color: var(--accent-primary);
    width: 32px;
}

.preset-btn strong {
    display: block;
    font-size: 0.95rem;
}

.preset-btn small {
    color: var(--text-dim);
    font-size: 0.78rem;
}

/* Designer Layout */
.designer-layout {
    display: grid;
    grid-template-columns: 1.3fr 1fr;
    gap: 1.5rem;
}

.control-group-title {
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--accent-primary);
    margin: 1.25rem 0 0.75rem 0;
    padding-bottom: 0.4rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.control-group-title:first-child {
    margin-top: 0;
}

.hidden {
    display: none !important;
}

.sample-preview-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 1.5rem 0;
}

.canvas-wrapper {
    background: #000;
    padding: 1rem;
    border-radius: var(--radius-md);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.5);
    border: 1px solid var(--border-glass);
    max-width: 100%;
    overflow: auto;
}

#sampleCanvas {
    display: block;
    max-width: 100%;
    height: auto;
}

/* Batch Grid */
.batch-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.batch-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
}

.label-card {
    background: var(--bg-card);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-md);
    padding: 1rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.label-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-glow);
    border-color: rgba(99, 102, 241, 0.4);
}

.label-card-img-wrapper {
    width: 100%;
    background: rgba(0, 0, 0, 0.3);
    padding: 0.75rem;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 0.75rem;
}

.label-card img {
    max-width: 100%;
    height: auto;
    border-radius: 4px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.25);
}

.label-card-footer {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.label-card-title {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-muted);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 180px;
}

/* Print Sheet Styling */
.print-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.print-controls-row {
    display: flex;
    gap: 1rem;
    align-items: flex-end;
}

.inline-group {
    margin-bottom: 0;
}

.form-control.compact {
    padding: 0.45rem 0.65rem;
    font-size: 0.85rem;
}

.print-sheet-wrapper {
    display: flex;
    justify-content: center;
    padding: 2rem;
    background: rgba(15, 23, 42, 0.8);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-glass);
    overflow: auto;
}

.print-page {
    background: #ffffff;
    color: #000000;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    padding: 10mm;
    display: grid;
    box-sizing: border-box;
}

.paper-a4 {
    width: 210mm;
    min-height: 297mm;
}

.paper-letter {
    width: 216mm;
    min-height: 279mm;
}

.print-item {
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px dashed #cbd5e1; /* Visual crop lines */
    box-sizing: border-box;
    padding: 2px;
}

.print-item img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

/* Print Styles */
@media print {
    body {
        background: none !important;
        color: #000 !important;
    }

    .app-header, .app-nav, .no-print, .btn, .batch-toolbar, .designer-layout, .panel-grid {
        display: none !important;
    }

    .print-sheet-wrapper {
        padding: 0 !important;
        background: none !important;
        border: none !important;
        overflow: visible !important;
    }

    .print-page {
        box-shadow: none !important;
        margin: 0 !important;
        padding: 5mm !important;
        width: 100% !important;
    }

    .print-item {
        border: none !important; /* Hide crop dashed borders when printing */
    }
}