/* ============================================
   Drawing Detective — Style System
   ============================================ */

:root {
    /* Color Palette */
    --bg-primary: #0a0a14;
    --bg-secondary: #111125;
    --bg-tertiary: #1a1a35;
    --bg-card: rgba(22, 22, 50, 0.7);
    --bg-card-hover: rgba(30, 30, 60, 0.85);
    
    --text-primary: #f0f0f8;
    --text-secondary: #a0a0c0;
    --text-tertiary: #6a6a90;
    --text-muted: #4a4a70;
    
    --accent-amber: #F59E0B;
    --accent-amber-dim: rgba(245, 158, 11, 0.15);
    --accent-amber-glow: rgba(245, 158, 11, 0.3);
    --accent-red: #EF4444;
    --accent-red-dim: rgba(239, 68, 68, 0.15);
    --accent-green: #10B981;
    --accent-green-dim: rgba(16, 185, 129, 0.15);
    --accent-blue: #3B82F6;
    --accent-blue-dim: rgba(59, 130, 246, 0.15);
    --accent-purple: #8B5CF6;
    --accent-purple-dim: rgba(139, 92, 246, 0.15);
    --accent-cyan: #06B6D4;
    --accent-cyan-dim: rgba(6, 182, 212, 0.15);
    --accent-pink: #EC4899;
    --accent-pink-dim: rgba(236, 72, 153, 0.15);
    
    --border-subtle: rgba(255, 255, 255, 0.06);
    --border-medium: rgba(255, 255, 255, 0.1);
    --border-accent: rgba(245, 158, 11, 0.3);
    
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 30px rgba(245, 158, 11, 0.1);
    
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
    
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 400ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* ============================================
   Reset & Base
   ============================================ */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-sans);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
}

/* Background texture */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(ellipse at 20% 0%, rgba(245, 158, 11, 0.05) 0%, transparent 60%),
        radial-gradient(ellipse at 80% 100%, rgba(139, 92, 246, 0.04) 0%, transparent 60%),
        radial-gradient(ellipse at 50% 50%, rgba(6, 182, 212, 0.02) 0%, transparent 80%);
    pointer-events: none;
    z-index: 0;
}

/* ============================================
   Layout
   ============================================ */
.app-container {
    position: relative;
    z-index: 1;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* ============================================
   Header
   ============================================ */
.app-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(10, 10, 20, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-subtle);
}

.header-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 16px 32px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo-group {
    display: flex;
    align-items: center;
    gap: 14px;
}

.logo-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    animation: pulse-glow 3s ease-in-out infinite;
}

@keyframes pulse-glow {
    0%, 100% { filter: drop-shadow(0 0 4px rgba(245, 158, 11, 0.3)); }
    50% { filter: drop-shadow(0 0 12px rgba(245, 158, 11, 0.5)); }
}

.app-title {
    font-size: 1.35rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--accent-amber), var(--accent-red));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: -0.02em;
}

.app-subtitle {
    font-size: 0.78rem;
    color: var(--text-tertiary);
    font-weight: 400;
    letter-spacing: 0.01em;
}

.header-actions {
    display: flex;
    gap: 10px;
}

/* ============================================
   Buttons
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 9px 18px;
    border: none;
    border-radius: var(--radius-sm);
    font-family: var(--font-sans);
    font-size: 0.82rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border-medium);
}

.btn-ghost:hover {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
    border-color: var(--border-accent);
}

.btn-accent {
    background: linear-gradient(135deg, var(--accent-amber), #D97706);
    color: #000;
    box-shadow: 0 2px 12px rgba(245, 158, 11, 0.25);
}

.btn-accent:hover {
    box-shadow: 0 4px 20px rgba(245, 158, 11, 0.4);
    transform: translateY(-1px);
}

.btn-small {
    padding: 5px 12px;
    font-size: 0.75rem;
}

/* ============================================
   Drop Zone
   ============================================ */
.main-content {
    flex: 1;
    max-width: 1400px;
    margin: 0 auto;
    padding: 32px;
    width: 100%;
}

.drop-zone {
    position: relative;
    border: 2px dashed var(--border-medium);
    border-radius: var(--radius-xl);
    padding: 64px 32px;
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-base);
    background: linear-gradient(135deg, rgba(22, 22, 50, 0.3), rgba(22, 22, 50, 0.1));
    overflow: hidden;
}

.drop-zone::before {
    content: '';
    position: absolute;
    inset: -2px;
    border-radius: var(--radius-xl);
    background: linear-gradient(135deg, transparent 30%, rgba(245, 158, 11, 0.1) 50%, transparent 70%);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.drop-zone:hover {
    border-color: var(--accent-amber);
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.03), rgba(139, 92, 246, 0.02));
    box-shadow: var(--shadow-glow);
}

.drop-zone:hover::before {
    opacity: 1;
}

.drop-zone.drag-over {
    border-color: var(--accent-amber);
    background: rgba(245, 158, 11, 0.05);
    box-shadow: 0 0 60px rgba(245, 158, 11, 0.15);
    transform: scale(1.01);
}

.drop-zone.drag-over .drop-zone-content {
    opacity: 0;
    transform: scale(0.95);
}

.drop-zone.drag-over .drop-zone-hover {
    opacity: 1;
    transform: scale(1);
}

.drop-zone-content {
    position: relative;
    z-index: 1;
    transition: all var(--transition-base);
}

.drop-icon {
    color: var(--text-tertiary);
    margin-bottom: 20px;
    transition: all var(--transition-base);
}

.drop-zone:hover .drop-icon {
    color: var(--accent-amber);
    transform: scale(1.05);
}

.drop-title {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
    letter-spacing: -0.01em;
}

.drop-subtitle {
    font-size: 0.88rem;
    color: var(--text-tertiary);
}

.drop-zone-hover {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transform: scale(1.05);
    transition: all var(--transition-base);
    z-index: 2;
}

.drop-zone-hover p {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--accent-amber);
}

.pulse-ring {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    border: 3px solid var(--accent-amber);
    margin-bottom: 20px;
    animation: pulse-ring-anim 1.5s ease-in-out infinite;
}

@keyframes pulse-ring-anim {
    0% { transform: scale(0.8); opacity: 1; }
    50% { transform: scale(1.1); opacity: 0.5; }
    100% { transform: scale(0.8); opacity: 1; }
}

.drop-zone.has-results {
    padding: 24px 32px;
    border-style: solid;
    border-color: var(--border-subtle);
    border-width: 1px;
}

.drop-zone.has-results .drop-icon svg {
    width: 32px;
    height: 32px;
}

.drop-zone.has-results .drop-title {
    font-size: 0.95rem;
}

.drop-zone.has-results .drop-subtitle {
    font-size: 0.78rem;
}

.drop-zone.has-results .drop-zone-content {
    display: flex;
    align-items: center;
    gap: 16px;
}

.drop-zone.has-results .drop-icon {
    margin-bottom: 0;
}

/* ============================================
   Processing Bar
   ============================================ */
.processing-bar {
    margin-top: 24px;
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    padding: 16px 20px;
    backdrop-filter: blur(12px);
}

.processing-inner {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
}

.spinner {
    width: 20px;
    height: 20px;
    border: 2.5px solid var(--border-medium);
    border-top-color: var(--accent-amber);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

.processing-inner span {
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.progress-track {
    height: 4px;
    background: var(--bg-tertiary);
    border-radius: 2px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--accent-amber), var(--accent-red));
    border-radius: 2px;
    transition: width var(--transition-base);
}

/* ============================================
   File Tabs
   ============================================ */
.file-tabs {
    display: flex;
    gap: 6px;
    padding: 6px;
    background: var(--bg-card);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-subtle);
    margin-bottom: 24px;
    overflow-x: auto;
    backdrop-filter: blur(12px);
}

.file-tab {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    border: none;
    border-radius: var(--radius-sm);
    background: transparent;
    color: var(--text-secondary);
    font-family: var(--font-sans);
    font-size: 0.82rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

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

.file-tab.active {
    background: linear-gradient(135deg, var(--accent-amber-dim), rgba(245, 158, 11, 0.08));
    color: var(--accent-amber);
    box-shadow: inset 0 0 0 1px rgba(245, 158, 11, 0.2);
}

.file-tab .tab-icon {
    width: 16px;
    height: 16px;
    opacity: 0.7;
}

.file-tab .tab-findings {
    background: var(--accent-amber-dim);
    color: var(--accent-amber);
    padding: 2px 7px;
    border-radius: 10px;
    font-size: 0.7rem;
    font-weight: 700;
}

/* ============================================
   Results Grid
   ============================================ */
.results-container {
    margin-top: 28px;
    animation: fadeInUp 0.5s ease;
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(16px); }
    to { opacity: 1; transform: translateY(0); }
}

.results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(420px, 1fr));
    gap: 20px;
}

/* ============================================
   Result Cards
   ============================================ */
.result-card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    overflow: hidden;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    transition: all var(--transition-base);
    animation: cardAppear 0.4s ease backwards;
}

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

@keyframes cardAppear {
    from { opacity: 0; transform: translateY(12px) scale(0.98); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}

.result-card:nth-child(1) { animation-delay: 0.05s; }
.result-card:nth-child(2) { animation-delay: 0.1s; }
.result-card:nth-child(3) { animation-delay: 0.15s; }
.result-card:nth-child(4) { animation-delay: 0.2s; }
.result-card:nth-child(5) { animation-delay: 0.25s; }
.result-card:nth-child(6) { animation-delay: 0.3s; }
.result-card:nth-child(7) { animation-delay: 0.35s; }
.result-card:nth-child(8) { animation-delay: 0.4s; }

.card-header {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-subtle);
}

.card-header h3 {
    flex: 1;
    font-size: 0.9rem;
    font-weight: 600;
    letter-spacing: -0.01em;
}

.card-icon {
    width: 34px;
    height: 34px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
}

.verdict-icon { background: var(--accent-amber-dim); color: var(--accent-amber); }
.source-icon { background: var(--accent-red-dim); color: var(--accent-red); }
.metadata-icon { background: var(--accent-blue-dim); color: var(--accent-blue); }
.people-icon { background: var(--accent-purple-dim); color: var(--accent-purple); }
.address-icon { background: var(--accent-green-dim); color: var(--accent-green); }
.software-icon { background: var(--accent-cyan-dim); color: var(--accent-cyan); }
.proprietary-icon { background: var(--accent-pink-dim); color: var(--accent-pink); }
.text-icon { background: rgba(255, 255, 255, 0.06); color: var(--text-secondary); }

.badge {
    background: var(--accent-amber-dim);
    color: var(--accent-amber);
    padding: 2px 9px;
    border-radius: 10px;
    font-size: 0.72rem;
    font-weight: 700;
    min-width: 24px;
    text-align: center;
}

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

/* Verdict Card - special styling */
.verdict-card {
    grid-column: 1 / -1;
    border-color: var(--border-accent);
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.04), rgba(22, 22, 50, 0.7));
}

.verdict-summary {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    margin-bottom: 16px;
}

.verdict-confidence {
    flex-shrink: 0;
    width: 64px;
    height: 64px;
    border-radius: 50%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 1.3rem;
    border: 3px solid;
}

.confidence-high {
    border-color: var(--accent-green);
    color: var(--accent-green);
    background: var(--accent-green-dim);
}

.confidence-medium {
    border-color: var(--accent-amber);
    color: var(--accent-amber);
    background: var(--accent-amber-dim);
}

.confidence-low {
    border-color: var(--accent-red);
    color: var(--accent-red);
    background: var(--accent-red-dim);
}

.verdict-confidence .label {
    font-size: 0.55rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-top: 1px;
}

.verdict-text h4 {
    font-size: 1.05rem;
    font-weight: 700;
    margin-bottom: 6px;
    color: var(--text-primary);
}

.verdict-text p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

.verdict-clues {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.clue-tag {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 5px 12px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-subtle);
    border-radius: 20px;
    font-size: 0.78rem;
    color: var(--text-secondary);
}

.clue-tag .dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
}

.dot-green { background: var(--accent-green); }
.dot-amber { background: var(--accent-amber); }
.dot-red { background: var(--accent-red); }
.dot-blue { background: var(--accent-blue); }

/* Source Card - special styling */
.source-card {
    grid-column: 1 / -1;
}

/* ============================================
   Data Display Components
   ============================================ */
.data-row {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    padding: 9px 0;
    border-bottom: 1px solid var(--border-subtle);
    gap: 16px;
}

.data-row:last-child {
    border-bottom: none;
}

.data-label {
    font-size: 0.78rem;
    color: var(--text-tertiary);
    font-weight: 500;
    flex-shrink: 0;
    min-width: 110px;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.data-value {
    font-size: 0.85rem;
    color: var(--text-primary);
    font-weight: 500;
    text-align: right;
    word-break: break-word;
}

.data-value.mono {
    font-family: var(--font-mono);
    font-size: 0.8rem;
}

.data-value.highlight {
    color: var(--accent-amber);
    font-weight: 600;
}

.data-value.success {
    color: var(--accent-green);
}

/* Finding items */
.finding-item {
    padding: 12px 14px;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    margin-bottom: 8px;
    transition: all var(--transition-fast);
}

.finding-item:last-child {
    margin-bottom: 0;
}

.finding-item:hover {
    background: rgba(255, 255, 255, 0.04);
    border-color: var(--border-medium);
}

.finding-item .finding-label {
    font-size: 0.72rem;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 4px;
}

.finding-item .finding-value {
    font-size: 0.88rem;
    color: var(--text-primary);
    font-weight: 600;
}

.finding-item .finding-context {
    font-size: 0.78rem;
    color: var(--text-tertiary);
    margin-top: 4px;
    font-style: italic;
}

/* Raw text area */
.raw-text-area {
    font-family: var(--font-mono);
    font-size: 0.78rem;
    line-height: 1.7;
    color: var(--text-secondary);
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    padding: 14px 16px;
    max-height: 320px;
    overflow-y: auto;
    white-space: pre-wrap;
    word-break: break-word;
}

.raw-text-area::-webkit-scrollbar {
    width: 6px;
}

.raw-text-area::-webkit-scrollbar-track {
    background: transparent;
}

.raw-text-area::-webkit-scrollbar-thumb {
    background: var(--border-medium);
    border-radius: 3px;
}

/* Highlighted text within raw area */
.raw-text-area .hl-company { color: var(--accent-red); font-weight: 600; }
.raw-text-area .hl-address { color: var(--accent-green); font-weight: 600; }
.raw-text-area .hl-person { color: var(--accent-purple); font-weight: 600; }
.raw-text-area .hl-software { color: var(--accent-cyan); font-weight: 600; }

/* Source info grid */
.source-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 12px;
}

.source-item {
    padding: 14px 16px;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.source-item:hover {
    background: rgba(255, 255, 255, 0.04);
}

.source-item .si-label {
    font-size: 0.72rem;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 6px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.source-item .si-value {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
}

.source-item .si-value.amber { color: var(--accent-amber); }
.source-item .si-value.green { color: var(--accent-green); }
.source-item .si-value.blue { color: var(--accent-blue); }
.source-item .si-value.purple { color: var(--accent-purple); }

.source-item .si-sub {
    font-size: 0.78rem;
    color: var(--text-tertiary);
    margin-top: 3px;
}

/* Empty state */
.empty-state {
    text-align: center;
    padding: 20px;
    color: var(--text-tertiary);
    font-size: 0.82rem;
}

/* ============================================
   Footer
   ============================================ */
.app-footer {
    text-align: center;
    padding: 24px 32px;
    border-top: 1px solid var(--border-subtle);
}

.app-footer p {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* ============================================
   Toast / Notification
   ============================================ */
.toast {
    position: fixed;
    bottom: 24px;
    right: 24px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-medium);
    border-radius: var(--radius-md);
    padding: 14px 20px;
    font-size: 0.85rem;
    color: var(--text-primary);
    box-shadow: var(--shadow-lg);
    z-index: 9999;
    animation: toastIn 0.3s ease, toastOut 0.3s ease 2.5s forwards;
    display: flex;
    align-items: center;
    gap: 10px;
}

@keyframes toastIn {
    from { opacity: 0; transform: translateY(16px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes toastOut {
    from { opacity: 1; transform: translateY(0); }
    to { opacity: 0; transform: translateY(16px); }
}

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 900px) {
    .header-content {
        padding: 14px 20px;
    }
    
    .main-content {
        padding: 20px;
    }
    
    .results-grid {
        grid-template-columns: 1fr;
    }
    
    .drop-zone {
        padding: 40px 20px;
    }
    
    .source-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 600px) {
    .header-content {
        flex-direction: column;
        gap: 12px;
    }
    
    .app-title {
        font-size: 1.15rem;
    }
    
    .drop-title {
        font-size: 1.1rem;
    }
}