/* ============================================
   ARTICLE STYLES
   PetAdoption.ai - Unified Article Stylesheet
   ============================================ */

/* ============================================
   BASE ARTICLE LAYOUT
   ============================================ */
.article-container {
    max-width: 800px;
    margin: 0 auto;
    padding: 120px 24px 80px;
}

.article-hero {
    width: 100%;
    height: 400px;
    object-fit: cover;
    border-radius: var(--radius-xl);
    margin-bottom: 48px;
}

.article-meta {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 24px;
}

.article-category {
    background: var(--accent-coral);
    color: white;
    padding: 6px 16px;
    border-radius: 100px;
    font-size: 0.85rem;
    font-weight: 600;
}

.article-title {
    font-size: 2.5rem;
    line-height: 1.2;
    margin-bottom: 24px;
}

.article-intro {
    font-size: 1.25rem;
    color: var(--warm-gray);
    line-height: 1.7;
    margin-bottom: 48px;
}

/* ============================================
   ARTICLE CONTENT TYPOGRAPHY
   ============================================ */
.article-content h2 {
    font-size: 1.75rem;
    margin: 48px 0 24px;
    color: var(--soft-black);
}

.article-content h3 {
    font-size: 1.25rem;
    margin: 32px 0 16px;
    color: var(--accent-coral);
}

.article-content p {
    color: var(--warm-gray);
    line-height: 1.8;
    margin-bottom: 20px;
}

.article-content ul {
    margin: 20px 0;
    padding-left: 24px;
}

.article-content li {
    color: var(--warm-gray);
    line-height: 1.8;
    margin-bottom: 12px;
}

/* ============================================
   NAVIGATION ELEMENTS
   ============================================ */
.back-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--accent-coral);
    text-decoration: none;
    font-weight: 500;
    margin-bottom: 32px;
}

.chapter-nav {
    display: flex;
    justify-content: space-between;
    margin-top: 60px;
    padding-top: 32px;
    border-top: 1px solid var(--light-gray);
}

.chapter-nav a {
    color: var(--accent-coral);
    text-decoration: none;
    font-weight: 500;
}

.category-nav {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    margin-bottom: 40px;
}

.category-btn {
    padding: 10px 20px;
    border: 2px solid var(--light-gray);
    border-radius: 100px;
    background: transparent;
    color: var(--warm-gray);
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

.category-btn:hover,
.category-btn.active {
    border-color: var(--accent-coral);
    background: var(--accent-coral);
    color: white;
}

/* ============================================
   CALLOUT BOXES
   ============================================ */
.tip-box {
    background: rgba(129, 178, 154, 0.1);
    border-left: 4px solid var(--accent-sage);
    padding: 20px 24px;
    border-radius: var(--radius-sm);
    margin: 24px 0;
}

.tip-box h4 {
    color: var(--accent-sage);
    margin-bottom: 8px;
}

.warning-box {
    background: rgba(224, 122, 95, 0.1);
    border-left: 4px solid var(--accent-coral);
    padding: 20px 24px;
    border-radius: var(--radius-sm);
    margin: 24px 0;
}

.warning-box h4 {
    color: var(--accent-coral);
    margin-bottom: 8px;
}

/* ============================================
   CHECKLIST COMPONENT
   ============================================ */
.checklist {
    background: var(--warm-white);
    border-radius: var(--radius-lg);
    padding: 32px;
    margin: 32px 0;
}

.checklist h4 {
    margin-bottom: 20px;
    color: var(--soft-black);
}

.checklist ul {
    list-style: none;
    padding: 0;
}

.checklist li {
    padding: 12px 0;
    padding-left: 36px;
    position: relative;
    border-bottom: 1px solid var(--light-gray);
}

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

.checklist li::before {
    content: '☐';
    position: absolute;
    left: 0;
    color: var(--accent-sage);
    font-size: 1.25rem;
}

/* ============================================
   TIMELINE COMPONENT
   ============================================ */
.timeline {
    margin: 40px 0;
}

.timeline-item {
    display: grid;
    grid-template-columns: 80px 1fr;
    gap: 24px;
    margin-bottom: 32px;
    padding-bottom: 32px;
    border-bottom: 1px solid var(--light-gray);
}

.timeline-item:last-child {
    border-bottom: none;
}

.timeline-day {
    background: linear-gradient(135deg, var(--accent-coral), var(--accent-terracotta));
    color: white;
    border-radius: var(--radius-md);
    padding: 16px;
    text-align: center;
    height: fit-content;
}

.timeline-day span {
    display: block;
    font-size: 0.75rem;
    text-transform: uppercase;
    opacity: 0.9;
}

.timeline-day strong {
    font-size: 1.5rem;
}

/* ============================================
   RULE BOX COMPONENT
   ============================================ */
.rule-box {
    background: var(--warm-white);
    border-radius: var(--radius-lg);
    padding: 32px;
    margin: 32px 0;
    text-align: center;
}

.rule-box h3 {
    color: var(--soft-black);
    margin-bottom: 24px;
}

.rule-items {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

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

.rule-item .number {
    font-size: 3rem;
    font-weight: 700;
    color: var(--accent-coral);
}

.rule-item .label {
    color: var(--warm-gray);
}

/* ============================================
   FAQ ACCORDION COMPONENT
   ============================================ */
.faq-item {
    background: var(--warm-white);
    border-radius: var(--radius-md);
    margin-bottom: 16px;
    overflow: hidden;
}

.faq-question {
    padding: 24px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 600;
    color: var(--soft-black);
    transition: background 0.2s;
}

.faq-question:hover {
    background: var(--warm-cream);
}

.faq-question .icon {
    font-size: 1.5rem;
    color: var(--accent-coral);
    transition: transform 0.3s;
}

.faq-item.open .faq-question .icon {
    transform: rotate(45deg);
}

.faq-answer {
    padding: 0 24px;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s, padding 0.3s;
}

.faq-item.open .faq-answer {
    padding: 0 24px 24px;
    max-height: 500px;
}

.faq-answer p {
    margin-bottom: 12px;
}

.faq-answer p:last-child {
    margin-bottom: 0;
}

/* ============================================
   DOG AGE CALCULATOR
   ============================================ */
.age-calculator {
    background: linear-gradient(135deg, var(--accent-coral), var(--accent-terracotta));
    border-radius: var(--radius-xl);
    padding: 48px;
    margin: 40px 0;
    color: white;
    text-align: center;
}

.age-calculator h3 {
    color: white;
    font-size: 1.5rem;
    margin-bottom: 24px;
}

.calculator-inputs {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 24px;
}

.calculator-inputs select,
.calculator-inputs input {
    padding: 14px 20px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.1);
    color: white;
    font-size: 1rem;
    min-width: 180px;
}

.calculator-inputs select option {
    color: var(--soft-black);
}

.calculator-inputs input::placeholder {
    color: rgba(255, 255, 255, 0.6);
}

.calculator-result {
    font-size: 2rem;
    font-weight: 700;
    margin-top: 24px;
    opacity: 0;
    transition: opacity 0.3s;
}

.calculator-result.visible {
    opacity: 1;
}

/* ============================================
   AGE TABLE
   ============================================ */
.age-table {
    width: 100%;
    border-collapse: collapse;
    margin: 32px 0;
}

.age-table th,
.age-table td {
    padding: 16px;
    text-align: center;
    border-bottom: 1px solid var(--light-gray);
}

.age-table th {
    background: var(--warm-cream);
    color: var(--soft-black);
    font-weight: 600;
}

.age-table td {
    color: var(--warm-gray);
}

.age-table tr:hover td {
    background: var(--warm-white);
}

/* ============================================
   SIZE CARDS
   ============================================ */
.size-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin: 32px 0;
}

.size-card {
    background: var(--warm-white);
    border-radius: var(--radius-md);
    padding: 24px;
    text-align: center;
}

.size-card .icon {
    font-size: 2.5rem;
    margin-bottom: 12px;
}

.size-card h4 {
    color: var(--soft-black);
    margin-bottom: 8px;
}

.size-card p {
    font-size: 0.9rem;
    margin-bottom: 0;
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */
@media (max-width: 768px) {
    .article-title {
        font-size: 2rem;
    }

    .article-hero {
        height: 250px;
    }

    .size-cards {
        grid-template-columns: 1fr;
    }

    .calculator-inputs {
        flex-direction: column;
        align-items: center;
    }

    .rule-items {
        grid-template-columns: 1fr;
    }

    .chapter-nav {
        flex-direction: column;
        gap: 16px;
    }

    .timeline-item {
        grid-template-columns: 60px 1fr;
        gap: 16px;
    }
}