/* Quality Checker - Styles */

:root {
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-tertiary: #1a1a25;
    --text-primary: #ffffff;
    --text-secondary: #a0a0b0;
    --text-muted: #606070;
    --accent-primary: #9147ff;
    --accent-secondary: #772ce8;
    --accent-glow: rgba(145, 71, 255, 0.3);
    --success: #00d26a;
    --warning: #ffaa00;
    --error: #ff4757;
    --border-color: #2a2a3a;
    --border-radius: 12px;
    --transition: all 0.2s ease;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

/* Header */
.tool-header {
    text-align: center;
    padding: 3rem 1.5rem 2rem;
    background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
    border-bottom: 1px solid var(--border-color);
}

.tool-icon {
    width: 72px;
    height: 72px;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    box-shadow: 0 8px 32px var(--accent-glow);
}

.tool-icon svg {
    color: white;
}

.tool-header h1 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.tool-subtitle {
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-bottom: 1rem;
}

.back-link {
    color: var(--accent-primary);
    text-decoration: none;
    font-size: 0.9rem;
    transition: var(--transition);
}

.back-link:hover {
    color: var(--text-primary);
}

/* Main Container */
.tool-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem 1.5rem;
}

.tool-section {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin-bottom: 3rem;
}

@media (max-width: 900px) {
    .tool-section {
        grid-template-columns: 1fr;
    }
}

/* Panels */
.controls-panel,
.result-panel {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 1.5rem;
}

.section-title {
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    color: var(--text-muted);
    margin-bottom: 1.5rem;
    text-transform: uppercase;
}

/* Form Elements */
.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    font-weight: 500;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.form-group select,
.form-group input[type="number"] {
    padding: 0.75rem 1rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 1rem;
    font-family: inherit;
    transition: var(--transition);
}

.form-group select {
    width: 100%;
}

.form-group select:focus,
.form-group input:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

/* Resolution Inputs */
.resolution-inputs {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.resolution-inputs input {
    width: 100px;
}

.resolution-inputs span {
    color: var(--text-muted);
}

/* Range Slider */
input[type="range"] {
    width: 100%;
    height: 8px;
    background: var(--bg-tertiary);
    border-radius: 4px;
    appearance: none;
    -webkit-appearance: none;
    margin-bottom: 0.5rem;
}

input[type="range"]::-webkit-slider-thumb {
    appearance: none;
    -webkit-appearance: none;
    width: 20px;
    height: 20px;
    background: var(--accent-primary);
    border-radius: 50%;
    cursor: pointer;
}

input[type="range"]::-moz-range-thumb {
    width: 20px;
    height: 20px;
    background: var(--accent-primary);
    border-radius: 50%;
    cursor: pointer;
    border: none;
}

.range-value {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.range-value input {
    width: 100px;
}

.range-value span {
    color: var(--text-secondary);
}

/* Toggle Buttons */
.toggle-buttons {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.toggle-btn {
    flex: 1;
    min-width: 120px;
    padding: 0.75rem 0.5rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-secondary);
    font-size: 0.8rem;
    cursor: pointer;
    transition: var(--transition);
}

.toggle-btn:hover {
    border-color: var(--accent-primary);
    color: var(--text-primary);
}

.toggle-btn.active {
    background: var(--accent-primary);
    border-color: var(--accent-primary);
    color: white;
}

/* Quality Display */
.quality-display {
    text-align: center;
    padding: 2rem;
    background: var(--bg-tertiary);
    border-radius: 8px;
    margin-bottom: 1.5rem;
}

.quality-meter {
    width: 100%;
    height: 16px;
    background: linear-gradient(90deg, var(--error), var(--warning), var(--success));
    border-radius: 8px;
    margin-bottom: 1rem;
    position: relative;
    overflow: hidden;
}

.meter-fill {
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: white;
    border-radius: 2px;
    box-shadow: 0 0 8px rgba(255, 255, 255, 0.8);
    transition: left 0.3s ease;
}

.bpp-value {
    font-size: 2.5rem;
    font-weight: 700;
    font-family: 'Inter', monospace;
    margin-bottom: 0.5rem;
}

.bpp-value.poor {
    color: var(--error);
}

.bpp-value.ok {
    color: var(--warning);
}

.bpp-value.good {
    color: var(--success);
}

.bpp-value.great {
    color: #00ff88;
}

.quality-label {
    font-size: 1.25rem;
    font-weight: 600;
}

.quality-label.poor {
    color: var(--error);
}

.quality-label.ok {
    color: var(--warning);
}

.quality-label.good {
    color: var(--success);
}

.quality-label.great {
    color: #00ff88;
}

/* Recommendation Box */
.recommendation-box {
    background: var(--bg-tertiary);
    border-radius: 8px;
    padding: 1.25rem;
    margin-bottom: 1.5rem;
    border-left: 3px solid var(--accent-primary);
}

.recommendation-box h3 {
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.recommendation-box p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin: 0;
}

/* Quick Fixes Table */
.quick-fixes {
    background: var(--bg-tertiary);
    border-radius: 8px;
    padding: 1.25rem;
}

.quick-fixes h3 {
    font-size: 0.9rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.quick-fixes table {
    width: 100%;
    border-collapse: collapse;
}

.quick-fixes th,
.quick-fixes td {
    padding: 0.5rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.85rem;
}

.quick-fixes th {
    color: var(--text-muted);
    font-weight: 500;
}

.quick-fixes td {
    color: var(--text-secondary);
}

.quick-fixes tr:last-child td {
    border-bottom: none;
}

/* Badges */
.badge {
    display: inline-block;
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
}

.badge.bad {
    background: rgba(255, 71, 87, 0.2);
    color: var(--error);
}

.badge.ok {
    background: rgba(255, 170, 0, 0.2);
    color: var(--warning);
}

.badge.good {
    background: rgba(0, 210, 106, 0.2);
    color: var(--success);
}

.badge.great {
    background: rgba(0, 255, 136, 0.2);
    color: #00ff88;
}

/* Info Section */
.info-section {
    margin-bottom: 3rem;
}

.info-section h2 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    text-align: center;
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

@media (max-width: 768px) {
    .info-grid {
        grid-template-columns: 1fr;
    }
}

.info-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    text-align: center;
}

.info-icon {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.info-card h3 {
    font-size: 1rem;
    margin-bottom: 0.75rem;
}

.info-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.info-card code {
    background: var(--bg-tertiary);
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-size: 0.85rem;
    color: var(--accent-primary);
}

/* FAQ Section */
.faq-section {
    margin-bottom: 3rem;
}

.faq-section h2 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    text-align: center;
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 1.25rem;
    margin-bottom: 1rem;
}

.faq-item h3 {
    font-size: 1rem;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.faq-item p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Footer */
.tool-footer {
    text-align: center;
    padding: 2rem 1.5rem;
    border-top: 1px solid var(--border-color);
    background: var(--bg-secondary);
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
    margin-bottom: 1rem;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--accent-primary);
}

.tool-footer p {
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* Standard Footer Style (Added by Update Script) */
.footer {
    margin-top: 2rem;
    text-align: center;
    padding: 1.5rem;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    border-radius: 12px;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.footer a {
    color: var(--accent-primary);
    text-decoration: none;
}

/* SEO Guide Section */
.seo-guide {
    max-width: 900px;
    margin: 4rem auto;
    padding: 0 1.5rem;
    color: var(--text-secondary);
}

.seo-guide h2 {
    color: var(--text-primary);
    font-size: 2rem;
    margin: 3rem 0 1.5rem;
    text-align: center;
}

.seo-guide h3 {
    color: var(--text-primary);
    font-size: 1.5rem;
    margin: 2rem 0 1rem;
}

.seo-guide p {
    margin-bottom: 1.5rem;
    font-size: 1.05rem;
    line-height: 1.8;
}

.seo-guide ul,
.seo-guide ol {
    margin-bottom: 1.5rem;
    padding-left: 2rem;
}

.seo-guide li {
    margin-bottom: 0.75rem;
    font-size: 1.05rem;
}

.seo-guide a {
    color: var(--accent-primary);
    text-decoration: none;
}

.seo-guide a:hover {
    text-decoration: underline;
}

.seo-guide strong {
    color: var(--text-primary);
}

.guide-highlight {
    background: var(--bg-secondary);
    border-left: 4px solid var(--accent-primary);
    padding: 1.5rem;
    margin: 2rem 0;
    border-radius: 0 12px 12px 0;
}