/* styles.css - 2026-02-15 */
/* SEO Analyzer - FreeWWW.com */

:root {
    --navy: #1a2744;
    --navy-light: #243352;
    --navy-dark: #0f1a2e;
    --accent: #4a90d9;
    --accent-light: #6ba8ed;
    --accent-dark: #3570b8;
    --success: #2ecc71;
    --success-bg: rgba(46, 204, 113, 0.1);
    --warning: #f39c12;
    --warning-bg: rgba(243, 156, 18, 0.1);
    --danger: #e74c3c;
    --danger-bg: rgba(231, 76, 60, 0.1);
    --text: #e8eaf0;
    --text-secondary: #a8b2c1;
    --text-dark: #2c3e50;
    --bg: #0d1421;
    --card-bg: #162035;
    --card-border: #243352;
    --input-bg: #1e2d48;
    --input-border: #344563;
    --radius: 12px;
    --radius-sm: 8px;
    --radius-xs: 4px;
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
    --transition: all 0.3s ease;
}

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

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

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ---- HEADER ---- */
.app-header {
    background: linear-gradient(135deg, var(--navy-dark) 0%, var(--navy) 50%, var(--navy-light) 100%);
    padding: 40px 0 50px;
    text-align: center;
    border-bottom: 1px solid var(--card-border);
    position: relative;
    overflow: hidden;
}

.app-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 30% 50%, rgba(74, 144, 217, 0.1) 0%, transparent 60%),
                radial-gradient(circle at 70% 50%, rgba(74, 144, 217, 0.05) 0%, transparent 60%);
    pointer-events: none;
}

.app-header h1 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 10px;
    position: relative;
    color: #fff;
}

.app-header h1 .accent-text {
    color: var(--accent-light);
}

.app-description {
    color: var(--text-secondary);
    font-size: 1.05rem;
    max-width: 700px;
    margin: 0 auto 30px;
    position: relative;
}

/* ---- SEARCH BOX ---- */
.search-box {
    display: flex;
    max-width: 700px;
    margin: 0 auto;
    position: relative;
    gap: 10px;
}

.search-box input {
    flex: 1;
    padding: 16px 20px;
    font-size: 1.05rem;
    background: var(--input-bg);
    border: 2px solid var(--input-border);
    border-radius: var(--radius);
    color: var(--text);
    outline: none;
    transition: var(--transition);
    font-family: inherit;
}

.search-box input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(74, 144, 217, 0.2);
}

.search-box input::placeholder {
    color: var(--text-secondary);
    opacity: 0.7;
}

.btn-analyze {
    padding: 16px 32px;
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
    color: #fff;
    border: none;
    border-radius: var(--radius);
    font-size: 1.05rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
    font-family: inherit;
    display: flex;
    align-items: center;
    gap: 8px;
}

.btn-analyze:hover {
    background: linear-gradient(135deg, var(--accent-light) 0%, var(--accent) 100%);
    transform: translateY(-1px);
    box-shadow: 0 4px 15px rgba(74, 144, 217, 0.4);
}

.btn-analyze:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.btn-analyze svg {
    width: 20px;
    height: 20px;
}

/* ---- LOADING ---- */
.loading-overlay {
    display: none;
    padding: 60px 20px;
    text-align: center;
}

.loading-overlay.active {
    display: block;
}

.loading-spinner {
    width: 60px;
    height: 60px;
    border: 4px solid var(--card-border);
    border-top-color: var(--accent);
    border-radius: 50%;
    margin: 0 auto 20px;
    animation: spin 1s linear infinite;
}

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

.loading-text {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.loading-subtext {
    font-size: 0.9rem;
    color: var(--text-secondary);
    opacity: 0.6;
}

.loading-progress {
    width: 300px;
    height: 4px;
    background: var(--card-border);
    border-radius: 2px;
    margin: 20px auto 0;
    overflow: hidden;
}

.loading-progress-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--accent), var(--accent-light));
    border-radius: 2px;
    width: 0;
    animation: loadProgress 8s ease-out forwards;
}

@keyframes loadProgress {
    0% { width: 0; }
    20% { width: 30%; }
    50% { width: 60%; }
    80% { width: 80%; }
    100% { width: 92%; }
}

/* ---- ERROR ---- */
.error-box {
    display: none;
    max-width: 600px;
    margin: 30px auto;
    padding: 20px 25px;
    background: var(--danger-bg);
    border: 1px solid rgba(231, 76, 60, 0.3);
    border-radius: var(--radius);
    color: var(--danger);
    text-align: center;
}

.error-box.active {
    display: block;
}

/* ---- RESULTS ---- */
.results-section {
    display: none;
    padding: 30px 0 60px;
}

.results-section.active {
    display: block;
}

/* Score overview */
.score-overview {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 25px;
    margin-bottom: 30px;
}

.score-gauge-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius);
    padding: 30px;
    text-align: center;
    box-shadow: var(--shadow-sm);
}

.score-gauge-wrapper {
    position: relative;
    width: 180px;
    height: 180px;
    margin: 0 auto 15px;
}

.score-gauge-wrapper canvas {
    width: 180px;
    height: 180px;
}

.score-value {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
}

.score-value .number {
    font-size: 3rem;
    font-weight: 800;
    line-height: 1;
}

.score-value .out-of {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.score-grade {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 5px;
}

.grade-a { color: var(--success); }
.grade-b { color: #52c788; }
.grade-c { color: var(--warning); }
.grade-d { color: #e67e22; }
.grade-f { color: var(--danger); }

.score-label {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.page-info-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius);
    padding: 25px;
    box-shadow: var(--shadow-sm);
}

.page-info-card h3 {
    font-size: 1.1rem;
    margin-bottom: 15px;
    color: var(--accent-light);
}

.page-info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 15px;
}

.info-item {
    padding: 12px;
    background: var(--input-bg);
    border-radius: var(--radius-sm);
}

.info-item .info-label {
    font-size: 0.8rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 4px;
}

.info-item .info-value {
    font-size: 1rem;
    font-weight: 600;
    word-break: break-all;
}

/* Summary stats */
.summary-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 15px;
    margin-bottom: 30px;
}

.stat-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius);
    padding: 20px;
    text-align: center;
    box-shadow: var(--shadow-sm);
}

.stat-card .stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    line-height: 1.2;
}

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

.stat-passed .stat-number { color: var(--success); }
.stat-warnings .stat-number { color: var(--warning); }
.stat-failed .stat-number { color: var(--danger); }

/* Charts row */
.charts-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 25px;
    margin-bottom: 30px;
}

.chart-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius);
    padding: 25px;
    box-shadow: var(--shadow-sm);
}

.chart-card h3 {
    font-size: 1.1rem;
    margin-bottom: 20px;
    color: var(--accent-light);
}

.chart-container {
    position: relative;
    width: 100%;
    min-height: 200px;
}

.chart-container-doughnut {
    max-width: 320px;
    margin: 0 auto;
}

/* Category tabs */
.category-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 20px;
    padding: 8px;
    background: var(--card-bg);
    border-radius: var(--radius);
    border: 1px solid var(--card-border);
}

.category-tab {
    padding: 10px 18px;
    background: transparent;
    border: none;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: 0.9rem;
    cursor: pointer;
    transition: var(--transition);
    font-family: inherit;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 6px;
    white-space: nowrap;
}

.category-tab:hover {
    background: var(--input-bg);
    color: var(--text);
}

.category-tab.active {
    background: var(--accent);
    color: #fff;
}

.category-tab .tab-score {
    font-size: 0.75rem;
    padding: 2px 6px;
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.15);
    font-weight: 600;
}

.category-tab.active .tab-score {
    background: rgba(255, 255, 255, 0.25);
}

/* Category content */
.category-content {
    display: none;
}

.category-content.active {
    display: block;
}

.category-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
    padding: 15px 20px;
    background: var(--card-bg);
    border-radius: var(--radius);
    border: 1px solid var(--card-border);
}

.category-header h3 {
    font-size: 1.2rem;
}

.category-score-badge {
    padding: 6px 16px;
    border-radius: 20px;
    font-weight: 700;
    font-size: 0.95rem;
}

.badge-good {
    background: var(--success-bg);
    color: var(--success);
    border: 1px solid rgba(46, 204, 113, 0.3);
}

.badge-average {
    background: var(--warning-bg);
    color: var(--warning);
    border: 1px solid rgba(243, 156, 18, 0.3);
}

.badge-poor {
    background: var(--danger-bg);
    color: var(--danger);
    border: 1px solid rgba(231, 76, 60, 0.3);
}

/* Test results */
.test-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.test-item {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius);
    overflow: hidden;
    transition: var(--transition);
}

.test-item:hover {
    border-color: var(--accent);
}

.test-item-header {
    display: flex;
    align-items: center;
    padding: 15px 20px;
    cursor: pointer;
    gap: 12px;
    user-select: none;
}

.test-status-icon {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-size: 14px;
    font-weight: 700;
}

.status-pass .test-status-icon {
    background: var(--success-bg);
    color: var(--success);
    border: 2px solid var(--success);
}

.status-warn .test-status-icon {
    background: var(--warning-bg);
    color: var(--warning);
    border: 2px solid var(--warning);
}

.status-fail .test-status-icon {
    background: var(--danger-bg);
    color: var(--danger);
    border: 2px solid var(--danger);
}

.test-name {
    font-weight: 600;
    flex: 1;
    min-width: 0;
}

.test-value-preview {
    color: var(--text-secondary);
    font-size: 0.85rem;
    max-width: 400px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.test-expand-icon {
    color: var(--text-secondary);
    transition: var(--transition);
    flex-shrink: 0;
}

.test-item.expanded .test-expand-icon {
    transform: rotate(180deg);
}

.test-details {
    display: none;
    padding: 0 20px 20px;
    border-top: 1px solid var(--card-border);
    margin-top: -1px;
}

.test-item.expanded .test-details {
    display: block;
}

.test-detail-row {
    padding: 10px 0;
}

.test-detail-row:not(:last-child) {
    border-bottom: 1px solid var(--card-border);
}

.test-detail-label {
    font-size: 0.8rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 4px;
}

.test-detail-value {
    font-size: 0.95rem;
    line-height: 1.5;
}

.recommendation-text {
    color: var(--accent-light);
}

/* Keywords section */
.keywords-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius);
    padding: 25px;
    margin-top: 20px;
    box-shadow: var(--shadow-sm);
}

.keywords-card h3 {
    margin-bottom: 15px;
    color: var(--accent-light);
}

.keyword-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.keyword-tag {
    padding: 6px 14px;
    background: var(--input-bg);
    border: 1px solid var(--input-border);
    border-radius: 20px;
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    gap: 6px;
}

.keyword-count {
    background: var(--accent);
    color: #fff;
    padding: 1px 6px;
    border-radius: 8px;
    font-size: 0.75rem;
    font-weight: 600;
}

.keyword-density {
    color: var(--text-secondary);
    font-size: 0.75rem;
}

/* Recommendations panel */
.recommendations-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius);
    padding: 25px;
    margin-top: 30px;
    box-shadow: var(--shadow-sm);
}

.recommendations-card h3 {
    font-size: 1.2rem;
    margin-bottom: 20px;
    color: var(--accent-light);
    display: flex;
    align-items: center;
    gap: 8px;
}

.rec-group {
    margin-bottom: 20px;
}

.rec-group-title {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-secondary);
    margin-bottom: 10px;
    font-weight: 600;
}

.rec-item {
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    margin-bottom: 8px;
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-size: 0.95rem;
    line-height: 1.5;
}

.rec-critical {
    background: var(--danger-bg);
    border-left: 3px solid var(--danger);
}

.rec-important {
    background: var(--warning-bg);
    border-left: 3px solid var(--warning);
}

.rec-badge {
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    flex-shrink: 0;
    margin-top: 2px;
}

.rec-critical .rec-badge {
    background: var(--danger);
    color: #fff;
}

.rec-important .rec-badge {
    background: var(--warning);
    color: #fff;
}

/* Actions bar */
.actions-bar {
    display: flex;
    gap: 10px;
    margin-bottom: 25px;
    flex-wrap: wrap;
}

.btn-action {
    padding: 10px 20px;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-sm);
    color: var(--text);
    font-size: 0.9rem;
    cursor: pointer;
    transition: var(--transition);
    font-family: inherit;
    display: flex;
    align-items: center;
    gap: 6px;
}

.btn-action:hover {
    border-color: var(--accent);
    color: var(--accent-light);
}

.btn-action.primary {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff;
}

.btn-action.primary:hover {
    background: var(--accent-light);
}

/* History panel */
.history-section {
    padding: 30px 0;
    border-top: 1px solid var(--card-border);
}

.history-section h3 {
    font-size: 1.2rem;
    margin-bottom: 15px;
    color: var(--accent-light);
}

.history-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 15px;
}

.history-item {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius);
    padding: 15px;
    cursor: pointer;
    transition: var(--transition);
}

.history-item:hover {
    border-color: var(--accent);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.history-url {
    font-weight: 600;
    margin-bottom: 6px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.history-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.history-score {
    font-weight: 700;
    font-size: 1.1rem;
}

.history-empty {
    text-align: center;
    padding: 30px;
    color: var(--text-secondary);
    font-style: italic;
}

.history-item-actions {
    display: flex;
    gap: 8px;
    margin-top: 8px;
}

.btn-history-action {
    padding: 4px 10px;
    background: var(--input-bg);
    border: 1px solid var(--input-border);
    border-radius: var(--radius-xs);
    color: var(--text-secondary);
    font-size: 0.78rem;
    cursor: pointer;
    transition: var(--transition);
    font-family: inherit;
}

.btn-history-action:hover {
    color: var(--accent-light);
    border-color: var(--accent);
}

.btn-history-action.delete:hover {
    color: var(--danger);
    border-color: var(--danger);
}

/* Footer */
.app-footer {
    text-align: center;
    padding: 30px 0;
    border-top: 1px solid var(--card-border);
}

.footer-brand {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.footer-brand img {
    width: 32px;
    height: 32px;
}

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

.footer-brand a:hover {
    color: var(--accent-light);
}

/* How it works */
.how-it-works {
    padding: 40px 0;
}

.how-it-works h2 {
    text-align: center;
    font-size: 1.4rem;
    margin-bottom: 30px;
    color: var(--accent-light);
}

.steps-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.step-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius);
    padding: 25px;
    text-align: center;
    transition: var(--transition);
}

.step-card:hover {
    border-color: var(--accent);
    transform: translateY(-2px);
}

.step-number {
    width: 40px;
    height: 40px;
    background: var(--accent);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.1rem;
    margin: 0 auto 15px;
}

.step-card h4 {
    margin-bottom: 8px;
}

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

/* Features list */
.features-section {
    padding: 0 0 40px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 15px;
}

.feature-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-sm);
    padding: 18px;
    display: flex;
    align-items: flex-start;
    gap: 12px;
}

.feature-icon {
    width: 36px;
    height: 36px;
    background: rgba(74, 144, 217, 0.15);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    color: var(--accent-light);
    font-size: 1.1rem;
}

.feature-card h5 {
    font-size: 0.95rem;
    margin-bottom: 4px;
}

.feature-card p {
    font-size: 0.82rem;
    color: var(--text-secondary);
    line-height: 1.4;
}

/* Print styles */
.print-report {
    display: none;
}

/* Responsive */
@media (max-width: 1024px) {
    .score-overview {
        grid-template-columns: 1fr;
    }

    .charts-row {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .app-header {
        padding: 25px 0 35px;
    }

    .app-header h1 {
        font-size: 1.5rem;
    }

    .app-description {
        font-size: 0.95rem;
    }

    .search-box {
        flex-direction: column;
    }

    .btn-analyze {
        justify-content: center;
    }

    .summary-stats {
        grid-template-columns: repeat(3, 1fr);
    }

    .stat-card .stat-number {
        font-size: 1.8rem;
    }

    .category-nav {
        overflow-x: auto;
        flex-wrap: nowrap;
        -webkit-overflow-scrolling: touch;
    }

    .page-info-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .steps-grid {
        grid-template-columns: 1fr;
    }

    .test-value-preview {
        display: none;
    }

    .history-list {
        grid-template-columns: 1fr;
    }

    .actions-bar {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 12px;
    }

    .summary-stats {
        grid-template-columns: 1fr;
    }

    .page-info-grid {
        grid-template-columns: 1fr;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg);
}

::-webkit-scrollbar-thumb {
    background: var(--card-border);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--accent);
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-in {
    animation: fadeInUp 0.4s ease-out forwards;
}

.delay-1 { animation-delay: 0.1s; opacity: 0; }
.delay-2 { animation-delay: 0.2s; opacity: 0; }
.delay-3 { animation-delay: 0.3s; opacity: 0; }
.delay-4 { animation-delay: 0.4s; opacity: 0; }