/* ===== Article Styles ===== */

.article {
    padding-top: 100px;
    padding-bottom: 4rem;
    min-height: 100vh;
}

.breadcrumb {
    margin-bottom: 2rem;
    color: var(--text-light);
    font-size: 0.9rem;
}

.breadcrumb a {
    color: var(--primary);
}

.article-content {
    max-width: 800px;
    margin: 0 auto;
}

.article-content h1 {
    color: var(--text);
    margin-bottom: 0.5rem;
    font-size: clamp(1.75rem, 4vw, 2.5rem);
}

.article-meta {
    color: var(--text-light);
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border);
}

/* Article Header Image */
.article-header-image {
    width: 100%;
    max-height: 300px;
    object-fit: cover;
    border-radius: 12px;
    margin-bottom: 2rem;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.article-content section {
    margin-bottom: 2.5rem;
}

.article-content h2 {
    text-align: right;
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--primary);
}

.article-content h3 {
    font-size: 1.2rem;
    margin: 1.5rem 0 0.75rem;
    color: var(--text);
}

.article-content p {
    color: var(--text);
    line-height: 1.8;
}

/* Example Boxes */
.example-box {
    background: var(--surface);
    border-radius: var(--radius-sm);
    padding: 1.25rem;
    margin: 1rem 0;
    border-right: 4px solid var(--primary);
}

.example-box h4 {
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

.example-box p {
    margin: 0;
    color: var(--text-light);
}

/* Timeline */
.timeline {
    position: relative;
    padding-right: 2rem;
}

.timeline::before {
    content: '';
    position: absolute;
    right: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: var(--primary);
    border-radius: 2px;
}

.timeline-item {
    position: relative;
    margin-bottom: 1.5rem;
    padding-right: 1.5rem;
}

.timeline-item::before {
    content: '';
    position: absolute;
    right: -2.35rem;
    top: 0.25rem;
    width: 12px;
    height: 12px;
    background: var(--primary);
    border-radius: 50%;
    border: 3px solid var(--background);
}

.timeline-item .year {
    font-weight: 700;
    color: var(--primary);
    font-size: 1.1rem;
}

.timeline-item p {
    margin: 0.25rem 0 0;
    color: var(--text-light);
}

/* Lists */
.benefits-list {
    list-style: none;
    padding: 0;
}

.benefits-list li {
    padding: 0.75rem 0;
    padding-right: 2rem;
    position: relative;
    border-bottom: 1px solid var(--border);
}

.benefits-list li::before {
    content: '✓';
    position: absolute;
    right: 0;
    color: var(--accent);
    font-weight: bold;
}

.benefits-list li:last-child {
    border-bottom: none;
}

/* Summary Box */
.summary-box {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: white;
    padding: 2rem;
    border-radius: var(--radius);
    margin: 2rem 0;
}

.summary-box h2 {
    color: white;
    text-align: right;
}

.summary-box ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.summary-box li {
    padding: 0.5rem 0;
    padding-right: 1.5rem;
    position: relative;
}

.summary-box li::before {
    content: '•';
    position: absolute;
    right: 0;
}

/* Article Navigation */
.article-nav {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border);
}

.article-nav .btn {
    padding: 0.75rem 1.5rem;
}

.article-nav .btn-primary {
    background: var(--primary);
    color: white;
}

.article-nav .btn-primary:hover {
    background: var(--primary-dark);
    color: white;
}

/* Info Cards */
.info-card {
    background: var(--surface);
    border-radius: var(--radius);
    padding: 1.5rem;
    margin: 1.5rem 0;
}

.info-card.warning {
    border-right: 4px solid #F59E0B;
    background: #FFFBEB;
}

.info-card.tip {
    border-right: 4px solid var(--accent);
    background: #ECFDF5;
}

/* Code blocks */
.code-example {
    background: #1F2937;
    color: #E5E7EB;
    padding: 1rem 1.5rem;
    border-radius: var(--radius-sm);
    overflow-x: auto;
    font-family: 'Fira Code', monospace;
    font-size: 0.9rem;
    direction: ltr;
    text-align: left;
}

/* Tool Cards */
.tool-card {
    background: var(--surface);
    border-radius: var(--radius);
    padding: 1.5rem;
    margin: 1.5rem 0;
    border-right: 4px solid var(--primary);
}

.tool-card h3 {
    color: var(--primary);
    margin-bottom: 0.25rem;
}

.tool-url {
    color: var(--text-light);
    font-size: 0.9rem;
    margin-bottom: 1rem !important;
}

.tool-card > p {
    margin-bottom: 1rem;
}

.use-cases {
    background: var(--background);
    padding: 1rem;
    border-radius: var(--radius-sm);
    margin-top: 1rem;
}

.use-cases h4 {
    font-size: 0.95rem;
    margin-bottom: 0.5rem;
    color: var(--text);
}

.use-cases ul {
    margin: 0;
    padding-right: 1.25rem;
}

.use-cases li {
    padding: 0.25rem 0;
    color: var(--text-light);
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin: 2rem 0;
}

.stat-item {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: white;
    padding: 1.5rem;
    border-radius: var(--radius);
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 0.9rem;
    opacity: 0.9;
}

/* Guidelines */
.guidelines {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.guideline-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    background: var(--surface);
    padding: 1.25rem;
    border-radius: var(--radius-sm);
}

.guideline-number {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--primary);
    color: white;
    border-radius: 50%;
    font-weight: 700;
    flex-shrink: 0;
}

.guideline-item h4 {
    margin-bottom: 0.25rem;
    color: var(--text);
}

.guideline-item p {
    margin: 0;
    color: var(--text-light);
    font-size: 0.95rem;
}

/* Pricing Info */
.pricing-info {
    background: var(--background);
    padding: 1rem;
    border-radius: var(--radius-sm);
    margin-top: 1rem;
    border: 1px solid var(--border);
}

.pricing-info h4 {
    margin-bottom: 0.5rem;
    font-size: 0.95rem;
}

.pricing-info ul {
    margin: 0;
    padding-right: 1.25rem;
}

.pricing-info li {
    padding: 0.25rem 0;
    color: var(--text-light);
    font-size: 0.9rem;
}

/* Tool URL Links */
.tool-url a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 500;
}

.tool-url a:hover {
    text-decoration: underline;
}

/* ===== Quiz Styles ===== */
.quiz-section {
    background: var(--surface);
    border-radius: var(--radius);
    padding: 2rem;
    margin: 3rem 0;
    border: 2px solid var(--primary);
}

.quiz-section h2 {
    color: var(--primary);
    margin-bottom: 0.5rem;
}

.quiz-intro {
    color: var(--text-light);
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border);
}

.quiz-question {
    background: var(--background);
    border-radius: var(--radius-sm);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.quiz-question h4 {
    color: var(--text);
    margin-bottom: 1rem;
    font-size: 1.1rem;
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
}

.question-number {
    background: var(--primary);
    color: white;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
    flex-shrink: 0;
}

.quiz-options {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.quiz-option {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem;
    background: white;
    border: 2px solid var(--border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.2s ease;
}

.quiz-option:hover {
    border-color: var(--primary);
    background: rgba(79, 70, 229, 0.05);
}

.quiz-option input[type="radio"] {
    width: 20px;
    height: 20px;
    accent-color: var(--primary);
    cursor: pointer;
}

.quiz-option span {
    color: var(--text);
    flex: 1;
}

.quiz-option.correct {
    background: #D1FAE5;
    border-color: #10B981;
}

.quiz-option.correct span {
    color: #065F46;
    font-weight: 500;
}

.quiz-option.incorrect {
    background: #FEE2E2;
    border-color: #EF4444;
}

.quiz-option.incorrect span {
    color: #991B1B;
}

/* Quiz Submit Button */
#quiz-submit {
    display: block;
    width: 100%;
    padding: 1rem 2rem;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: white;
    border: none;
    border-radius: var(--radius);
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    margin-top: 1rem;
}

#quiz-submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(79, 70, 229, 0.4);
}

/* Quiz Results */
.quiz-results {
    display: none;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: white;
    padding: 2rem;
    border-radius: var(--radius);
    text-align: center;
    margin-top: 1.5rem;
}

.quiz-results h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.score-display {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 1.5rem;
}

.score-item {
    text-align: center;
}

.score-number {
    display: block;
    font-size: 3rem;
    font-weight: 700;
    line-height: 1;
}

.score-label {
    font-size: 0.9rem;
    opacity: 0.9;
}

.quiz-message {
    font-size: 1.2rem;
    margin-bottom: 1.5rem;
}

#quiz-retry {
    padding: 0.75rem 2rem;
    background: white;
    color: var(--primary);
    border: none;
    border-radius: var(--radius);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.2s ease;
}

#quiz-retry:hover {
    transform: scale(1.05);
}

/* Responsive - Mobile */
@media (max-width: 768px) {
    .article {
        padding-top: 44px;
        padding-left: 0;
        padding-right: 0;
    }

    .article .container {
        padding: 0 1rem;
        max-width: 100%;
        overflow-x: hidden;
    }

    .article-content {
        max-width: 100%;
        overflow-wrap: break-word;
        word-break: break-word;
    }

    .article-content h1 {
        font-size: clamp(1.3rem, 4vw, 1.6rem);
    }

    .article-content h1,
    .article-content h2,
    .article-content h3 {
        overflow-wrap: break-word;
        word-break: break-word;
    }

    .article-header-image {
        max-width: 100%;
        width: 100%;
        height: auto;
        border-radius: 8px;
    }

    .article-nav {
        flex-direction: column;
        gap: 0.75rem;
        padding-top: 1.5rem;
        margin-top: 2rem;
    }

    .article-nav .btn {
        width: 100%;
        max-width: 100%;
        text-align: center;
        box-sizing: border-box;
    }

    .timeline {
        padding-right: 1.25rem;
    }

    .timeline-item {
        padding-right: 1.25rem;
    }

    .timeline-item::before {
        right: -1.95rem;
    }

    .example-box,
    .code-example {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        max-width: 100%;
    }

    .quiz-section {
        padding: 1.25rem;
    }

    .quiz-question {
        padding: 1rem;
    }

    .quiz-question h4 {
        flex-wrap: wrap;
    }

    .quiz-option {
        padding: 0.75rem;
    }

    .quiz-option span {
        min-width: 0;
        overflow-wrap: break-word;
    }

    .score-display {
        gap: 1rem;
        flex-wrap: wrap;
        justify-content: center;
    }

    .score-number {
        font-size: 2rem;
    }

    .stats-grid {
        grid-template-columns: 1fr;
        min-width: 0;
    }

    .guideline-item {
        flex-direction: column;
        gap: 0.75rem;
    }

    .summary-box {
        padding: 1.25rem;
    }

    .tool-card,
    .info-card {
        min-width: 0;
    }
}

@media (max-width: 480px) {
    .article {
        padding-top: 40px;
    }

    .article .container {
        padding: 0 0.75rem;
    }

    .breadcrumb {
        font-size: 0.85rem;
    }

    .timeline::before {
        right: -0.1rem;
    }

    .timeline-item::before {
        right: -1.5rem;
        width: 10px;
        height: 10px;
    }
}