/* =========================================
   AI Image Detector - Styles
   =========================================

   Tool: AI Image Detector - FFT Noise Analysis
   Category: IT & Coding Tools

   Project: Tools Hub by Jesse Anderson
   Repository: https://github.com/jesse-anderson/Tools
   License: GPL-3.0

   ========================================= */

/* =========================================
   1. THEME VARIABLES (Dark & Light)
   ========================================= */
:root {
    /* Dark Theme (Default) */
    --bg-body: #09090b;
    --bg-card: #18181b;
    --bg-secondary: #000000;
    --border-color: #27272a;
    --text-primary: #f4f4f5;
    --text-secondary: #a1a1aa;
    --text-muted: #52525b;
    --accent-engineering: #fbbf24;
    --accent-dim: rgba(251, 191, 36, 0.1);
}

/* Light Theme Overrides */
[data-theme="light"] {
    --bg-body: #ffffff;
    --bg-card: #ffffff;
    --bg-secondary: #f4f4f5;
    --border-color: #e4e4e7;
    --text-primary: #09090b;
    --text-secondary: #52525b;
    --text-muted: #a1a1aa;
    /* Keep accent roughly the same or slightly darker for contrast */
    --accent-engineering: #d97706;
    --accent-dim: rgba(217, 119, 6, 0.1);
}

body {
    background-color: var(--bg-body);
    color: var(--text-primary);
    font-family: 'Space Grotesk', sans-serif;
    margin: 0;
    transition: background-color 0.3s, color 0.3s;
}

.container {
    max-width: 1600px;
    margin: 0 auto;
    padding: 20px;
}

/* =========================================
   2. LAYOUT & PANELS
   ========================================= */
.calculator-layout {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 20px;
    height: calc(100vh - 120px);
    min-height: 800px;
}

.panel {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 20px;
    display: flex;
    flex-direction: column;
    overflow-y: auto;
    transition: background 0.3s, border-color 0.3s;
}

.panel-header {
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border-color);
    flex-shrink: 0;
}

.panel-header h2 {
    font-size: 1.1rem;
    margin: 0 0 4px 0;
    font-weight: 700;
    color: var(--text-primary);
}

.panel-header p {
    color: var(--text-secondary);
    font-size: 0.8rem;
    margin: 0;
}

/* =========================================
   3. SIDEBAR CONTROLS
   ========================================= */
.upload-zone {
    border: 2px dashed var(--border-color);
    border-radius: 8px;
    padding: 24px;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s;
    background: var(--bg-secondary);
    margin-bottom: 16px;
    flex-shrink: 0;
}

.upload-zone:hover {
    border-color: var(--accent-engineering);
    background: var(--bg-card);
}

.upload-zone.dragover {
    border-color: var(--accent-engineering);
    background: var(--accent-dim);
}

.upload-zone:focus-visible {
    outline: 2px solid var(--accent-engineering);
    outline-offset: 2px;
}

.upload-icon {
    width: 32px;
    height: 32px;
    color: var(--text-muted);
    margin-bottom: 8px;
}

.upload-text {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-primary);
}

.control-group {
    margin-bottom: 12px;
    flex-shrink: 0;
}

.control-label {
    font-size: 0.7rem;
    text-transform: uppercase;
    color: var(--text-secondary);
    margin-bottom: 6px;
    font-weight: 600;
    letter-spacing: 0.05em;
}

.control-select {
    width: 100%;
    padding: 8px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-primary);
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.8rem;
    outline: none;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    font-size: 0.8rem;
    color: var(--text-primary);
    margin-bottom: 6px;
}

.checkbox-input {
    width: 14px;
    height: 14px;
    accent-color: var(--accent-engineering);
}

.template-section {
    margin-top: 12px;
    flex-shrink: 0;
}

.template-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 6px;
}

.template-btn {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 8px;
    text-align: left;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    gap: 6px;
}

.template-btn:hover {
    border-color: var(--accent-engineering);
    background: var(--bg-card);
}

.template-btn span {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.7rem;
    color: var(--text-secondary);
}

.template-status {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    flex-shrink: 0;
}

.status-real {
    background: #10b981;
}

.status-ai {
    background: #ef4444;
}

/* =========================================
   FFT ENGINE STATUS & PERFORMANCE
   ========================================= */
.engine-status {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-top: 6px;
    padding: 4px 8px;
    background: var(--bg-secondary);
    border-radius: 4px;
    font-size: 0.7rem;
}

.status-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--text-muted);
    flex-shrink: 0;
}

.status-dot.active-wasm {
    background: #10b981;
    box-shadow: 0 0 6px rgba(16, 185, 129, 0.5);
}

.status-dot.active-js {
    background: #f59e0b;
    box-shadow: 0 0 6px rgba(245, 158, 11, 0.5);
}

.status-dot.error {
    background: #ef4444;
}

.status-text {
    color: var(--text-secondary);
    font-family: 'JetBrains Mono', monospace;
}

.perf-stats {
    background: var(--bg-secondary);
    border-radius: 4px;
    padding: 6px 8px;
    margin-top: 4px;
}

.perf-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.7rem;
}

.perf-label {
    color: var(--text-secondary);
    font-family: 'JetBrains Mono', monospace;
}

.perf-value {
    color: var(--accent-engineering);
    font-family: 'JetBrains Mono', monospace;
    font-weight: 600;
}

/* =========================================
   4. VISUALIZATION GRID
   ========================================= */
.analysis-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    grid-template-rows: repeat(2, 1fr);
    gap: 16px;
    flex: 1;
    min-height: 0;
}

/* Last row has only 2 items, center them */
.analysis-grid > .viewport-card:nth-child(4) {
    grid-column: 1;
}
.analysis-grid > .viewport-card:nth-child(5) {
    grid-column: 2;
}

.viewport-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    position: relative;
    min-height: 0;
}

.viewport-header {
    padding: 10px 12px;
    border-bottom: 1px solid var(--border-color);
    font-family: 'Space Grotesk', sans-serif;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--bg-card);
    flex-shrink: 0;
    height: 40px;
}

.viewport-header span:last-child {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.7rem;
    font-weight: 400;
    color: var(--text-muted);
}

.viewport-content {
    flex: 1;
    min-height: 0;
    position: relative;
    background-color: #000;
    background-image: radial-gradient(#222 1px, transparent 1px);
    background-size: 20px 20px;
    overflow: hidden;
    cursor: grab;
    display: flex;
    align-items: center;
    justify-content: center;
}

.viewport-content:active {
    cursor: grabbing;
}

canvas {
    display: block;
    max-width: 100%;
    max-height: 100%;
}

#polarCanvas {
    /* Canvas width/height set by JS to match container */
    display: block;
}

#azimuthalCanvas, #radialCanvas {
    /* Canvas width/height set by JS to match container */
    display: block;
}

/* =========================================
   5. HEADER & THEME TOGGLE
   ========================================= */
.back-link {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.2s;
}

.back-link:hover {
    color: var(--accent-engineering);
}

.back-link svg {
    width: 18px;
    height: 18px;
}

.theme-toggle {
    display: flex;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 2px;
}

.theme-toggle button {
    background: transparent;
    border: none;
    padding: 6px;
    border-radius: 50%;
    cursor: pointer;
    color: var(--text-secondary);
    display: flex;
}

.theme-toggle button:hover {
    color: var(--text-primary);
}

.theme-toggle button svg {
    width: 16px;
    height: 16px;
}

/* Active state for theme buttons handled by JS or simple CSS if classes added */
[data-theme="light"] button[data-theme-toggle="light"] {
    color: var(--accent-engineering);
    background: var(--bg-card);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

[data-theme="dark"] button[data-theme-toggle="dark"] {
    color: var(--accent-engineering);
    background: var(--bg-card);
}

/* =========================================
   6. GUIDE & TECH SPECS
   ========================================= */
.guide-box {
    margin-top: 20px;
    padding: 16px;
    background: var(--bg-secondary);
    border-left: 3px solid var(--accent-engineering);
    border-radius: 0 6px 6px 0;
    flex-shrink: 0;
}

.guide-title {
    font-weight: 700;
    margin-bottom: 8px;
    font-size: 0.9rem;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 8px;
}

.guide-content {
    font-size: 0.8rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

.guide-content ul {
    margin: 8px 0;
    padding-left: 16px;
}

.guide-content li {
    margin-bottom: 4px;
}

.guide-content strong {
    color: var(--text-primary);
    font-weight: 600;
}

.tech-foldable {
    margin-top: 16px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: var(--bg-card);
    flex-shrink: 0;
}

.tech-foldable summary {
    padding: 12px;
    cursor: pointer;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.8rem;
    color: var(--text-muted);
    list-style: none;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: color 0.2s;
}

.tech-foldable summary:hover {
    color: var(--accent-engineering);
}

.tech-foldable summary::-webkit-details-marker {
    display: none;
}

.tech-foldable summary::before {
    content: '+';
    font-weight: bold;
    width: 10px;
    display: inline-block;
}

.tech-foldable[open] summary::before {
    content: '-';
}

.tech-content {
    padding: 16px;
    border-top: 1px solid var(--border-color);
    font-size: 0.85rem;
    line-height: 1.6;
    color: var(--text-secondary);
}

.tech-content h3 {
    font-size: 0.9rem;
    color: var(--text-primary);
    margin: 0 0 8px 0;
    font-family: 'JetBrains Mono';
}

.tech-content p {
    margin-bottom: 12px;
}

/* =========================================
   7. LOADERS & UTILS
   ========================================= */
.processing-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.85);
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 20;
    backdrop-filter: blur(2px);
}

.loader-spinner {
    width: 32px;
    height: 32px;
    border: 3px solid var(--text-muted);
    border-top-color: var(--accent-engineering);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 16px;
}

.processing-text {
    font-family: 'JetBrains Mono', monospace;
    color: var(--accent-engineering);
    font-size: 0.75rem;
    margin-bottom: 8px;
}

progress {
    width: 180px;
    height: 4px;
    border-radius: 2px;
    border: none;
    background: var(--bg-secondary);
}

progress::-webkit-progress-bar {
    background: var(--bg-secondary);
    border-radius: 2px;
}

progress::-webkit-progress-value {
    background: var(--accent-engineering);
    border-radius: 2px;
}

@keyframes spin {
    100% {
        transform: rotate(360deg);
    }
}

/* =========================================
   8. RESPONSIVE DESIGN
   ========================================= */
@media (max-width: 1024px) {
    .calculator-layout {
        grid-template-columns: 1fr;
        height: auto;
    }

    .analysis-grid {
        grid-template-columns: 1fr;
        height: auto;
        grid-template-rows: repeat(5, 300px);
    }

    .analysis-grid > .viewport-card:nth-child(4),
    .analysis-grid > .viewport-card:nth-child(5) {
        grid-column: auto;
    }
}