/* =========================================
   landing.css — index.html 樣式
   手機優先 · 女性質感 · 溫暖深色
   ========================================= */


/* --- Hero 區 --- */
.hero {
    min-height: 100dvh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-2xl) var(--space-md);
    position: relative;
    overflow: hidden;
}

/* 背景輕微暈染 */
.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse 70% 50% at 50% 30%, rgba(107, 154, 143, 0.06) 0%, transparent 70%),
        radial-gradient(ellipse 60% 40% at 50% 80%, rgba(107, 154, 143, 0.04) 0%, transparent 60%);
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 1;
    width: 100%;
    max-width: 600px;
    text-align: center;
    animation: fadeIn 0.8s var(--transition-breath) both;
}

.hero-content h1 {
    color: var(--text-primary);
    margin-bottom: var(--space-md);
}

.hero-sub {
    color: var(--text-secondary);
    font-size: 1.05rem;
    margin-bottom: var(--space-lg);
}


/* --- AIO 精準答 --- */
.aio-answer {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.8;
    max-width: 480px;
    margin: 0 auto var(--space-xl);
    padding: var(--space-md) var(--space-lg);
    background: rgba(255,255,255,0.03);
    border-left: 2px solid rgba(107, 154, 143, 0.25);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    text-align: left;
}

.aio-answer strong {
    color: var(--accent-warm);
    font-weight: 400;
}


/* --- CTA 主按鈕 --- */
.cta-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    min-height: 56px;
    padding: 14px 40px;
    background: var(--accent-warm);
    color: #1A1E1C;
    font-family: var(--font-base);
    font-size: 1.05rem;
    font-weight: 400;
    letter-spacing: 0.04em;
    border-radius: var(--radius-full);
    box-shadow: var(--shadow-warm), 0 8px 32px rgba(107, 154, 143, 0.2);
    transition: all var(--transition-base);
    -webkit-tap-highlight-color: transparent;
    text-decoration: none;
    cursor: pointer;
}

.cta-primary:hover {
    background: #89B5A2;
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow), 0 12px 40px rgba(107, 154, 143, 0.3);
}

.cta-primary:active {
    transform: translateY(0);
}

/* CTA 後的補充文字群 */
.cta-group {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-md);
    margin-top: var(--space-xl);
}


/* --- 信任指標 --- */
.trust-signal {
    font-size: 0.78rem;
    color: var(--text-secondary);
    letter-spacing: 0.04em;
    opacity: 0.7;
    margin-top: var(--space-md);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
}

.trust-signal::before {
    content: '🔒';
    font-size: 0.75rem;
    filter: grayscale(0.5) brightness(0.8);
}

.trust-signals-row {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-sm) var(--space-lg);
    margin-top: var(--space-md);
}

.trust-signals-row .trust-signal {
    margin-top: 0;
}


/* --- 關心語區塊 --- */
.care-words {
    padding: var(--space-2xl) var(--space-md);
    text-align: center;
}

.care-words .container {
    max-width: 480px;
}

.care-words__title {
    font-size: clamp(1.4rem, 4.5vw, 2rem);
    font-weight: 300;
    color: var(--text-primary);
    line-height: 1.5;
    margin-bottom: var(--space-xl);
}

.care-words__title em {
    font-style: normal;
    color: var(--accent-warm);
}

.care-words__body {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 2;
    text-align: left;
}

.care-words__body p + p {
    margin-top: var(--space-md);
}

/* 呼吸感留白的引言 */
.care-quote {
    padding: var(--space-xl) var(--space-lg);
    border-top: 1px solid rgba(255,255,255,0.05);
    border-bottom: 1px solid rgba(255,255,255,0.05);
    margin: var(--space-xl) 0;
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 2;
    letter-spacing: 0.05em;
}


/* --- MBTI 導流區 --- */
.mbti-cta {
    padding: var(--space-xl) var(--space-md);
}

.mbti-cta .container {
    max-width: 560px;
}

.mbti-cta__card {
    background: var(--bg-card);
    border: 1px solid rgba(107, 154, 143, 0.15);
    border-radius: var(--radius-xl);
    padding: var(--space-xl) var(--space-lg);
    text-align: center;
    position: relative;
    overflow: hidden;
}

/* 裝飾光暈 */
.mbti-cta__card::before {
    content: '';
    position: absolute;
    top: 0; left: 50%;
    transform: translateX(-50%);
    width: 200px; height: 2px;
    background: linear-gradient(90deg, transparent, var(--accent-warm), transparent);
    opacity: 0.5;
}

.mbti-cta__label {
    font-size: 0.75rem;
    letter-spacing: 0.12em;
    color: var(--accent-warm);
    opacity: 0.7;
    text-transform: uppercase;
    margin-bottom: var(--space-md);
}

.mbti-cta__title {
    font-size: clamp(1.1rem, 3.5vw, 1.5rem);
    font-weight: 300;
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
    line-height: 1.5;
}

.mbti-cta__sub {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-bottom: var(--space-xl);
    line-height: 1.8;
}

.mbti-types {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-lg);
}

.mbti-type-badge {
    padding: 4px 12px;
    border-radius: var(--radius-full);
    background: rgba(107, 154, 143, 0.08);
    color: var(--accent-warm);
    font-size: 0.8rem;
    letter-spacing: 0.06em;
    border: 1px solid rgba(107, 154, 143, 0.15);
}


/* --- 文章卡片網格 --- */
.knowledge-cards {
    padding: var(--space-2xl) var(--space-md);
}

.knowledge-cards__header {
    text-align: center;
    margin-bottom: var(--space-xl);
}

.knowledge-cards__title {
    font-size: clamp(1.1rem, 3.5vw, 1.5rem);
    font-weight: 300;
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
}

.knowledge-cards__sub {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.cards-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-md);
}

@media (min-width: 600px) {
    .cards-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 960px) {
    .cards-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}


/* --- 單張卡片 --- */
.card {
    display: flex;
    flex-direction: column;
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid rgba(255,255,255,0.04);
    text-decoration: none;
    color: inherit;
    transition: all var(--transition-base);
    cursor: pointer;
}

.card:hover {
    border-color: rgba(107, 154, 143, 0.2);
    box-shadow: var(--shadow-warm);
    transform: translateY(-2px);
}

.card:active {
    transform: translateY(0);
}

.card__image {
    aspect-ratio: 16/9;
    background: var(--bg-surface);
    overflow: hidden;
}

.card__image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.card:hover .card__image img {
    transform: scale(1.03);
}

.card__body {
    padding: var(--space-md);
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.card__tag {
    font-size: 0.72rem;
    letter-spacing: 0.1em;
    color: var(--accent-warm);
    opacity: 0.75;
    text-transform: uppercase;
}

.card__title {
    font-size: 0.95rem;
    font-weight: 400;
    color: var(--text-primary);
    line-height: 1.55;
}

.card__excerpt {
    font-size: 0.82rem;
    color: var(--text-secondary);
    line-height: 1.7;
    flex: 1;
    /* 最多顯示 3 行 */
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.card__meta {
    font-size: 0.75rem;
    color: var(--text-secondary);
    opacity: 0.6;
    margin-top: var(--space-xs);
}

/* 無圖版卡片 */
.card--text-only .card__body {
    padding: var(--space-lg);
}

/* 強調卡片 */
.card--featured {
    border-color: rgba(107, 154, 143, 0.15);
}

.card--featured .card__tag {
    color: var(--accent-warm);
    opacity: 1;
}


/* --- FAQ 手風琴 --- */
.faq {
    padding: var(--space-2xl) var(--space-md);
}

.faq .container {
    max-width: 640px;
}

.faq__title {
    text-align: center;
    font-size: clamp(1.1rem, 3.5vw, 1.5rem);
    font-weight: 300;
    color: var(--text-primary);
    margin-bottom: var(--space-xl);
}

.faq details {
    border-bottom: 1px solid rgba(255,255,255,0.06);
}

.faq details:first-of-type {
    border-top: 1px solid rgba(255,255,255,0.06);
}

.faq summary {
    padding: var(--space-lg) 0;
    font-size: 0.95rem;
    font-weight: 400;
    color: var(--text-primary);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--space-md);
    transition: color var(--transition-fast);
    user-select: none;
}

.faq summary:hover {
    color: var(--accent-warm);
}

/* 展開箭頭 */
.faq summary::after {
    content: '';
    flex-shrink: 0;
    width: 18px;
    height: 18px;
    border-right: 1.5px solid currentColor;
    border-bottom: 1.5px solid currentColor;
    transform: rotate(45deg) translate(-3px, -3px);
    opacity: 0.5;
    transition: transform var(--transition-base);
}

.faq details[open] summary::after {
    transform: rotate(-135deg) translate(-3px, -3px);
}

.faq details[open] summary {
    color: var(--accent-warm);
}

.faq details p,
.faq details .faq-body {
    padding: 0 0 var(--space-lg);
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.85;
    animation: slideDown 0.2s ease both;
}

.faq details p a {
    color: var(--accent-warm);
    text-decoration: underline;
    text-underline-offset: 3px;
    text-decoration-color: rgba(107, 154, 143, 0.4);
}


/* --- Footer --- */
footer {
    padding: var(--space-2xl) var(--space-md) var(--space-xl);
    border-top: 1px solid rgba(255,255,255,0.05);
}

footer .container {
    max-width: 680px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-xl);
}

@media (min-width: 600px) {
    .footer-grid {
        grid-template-columns: 1.5fr 1fr 1fr;
        gap: var(--space-lg);
    }
}

.footer-brand__name {
    font-size: 0.9rem;
    font-weight: 400;
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
}

.footer-brand__desc {
    font-size: 0.8rem;
    color: var(--text-secondary);
    line-height: 1.8;
    opacity: 0.7;
}

.footer-col__title {
    font-size: 0.75rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--text-secondary);
    opacity: 0.5;
    margin-bottom: var(--space-md);
}

.footer-col__links {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.footer-col__links a {
    font-size: 0.85rem;
    color: var(--text-secondary);
    opacity: 0.7;
    transition: color var(--transition-fast), opacity var(--transition-fast);
}

.footer-col__links a:hover {
    color: var(--accent-warm);
    opacity: 1;
}

.footer-bottom {
    margin-top: var(--space-xl);
    padding-top: var(--space-lg);
    border-top: 1px solid rgba(255,255,255,0.04);
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: var(--space-sm);
    font-size: 0.75rem;
    color: var(--text-secondary);
    opacity: 0.45;
}

.footer-disclaimer {
    margin-top: var(--space-xl);
    padding: var(--space-lg);
    background: rgba(255,255,255,0.02);
    border-radius: var(--radius-md);
    font-size: 0.78rem;
    color: var(--text-secondary);
    opacity: 0.55;
    line-height: 1.9;
}


/* --- 頁面淡入動畫 --- */
.hero-content {
    animation: fadeIn 0.8s ease both;
}

.care-words .container {
    animation: fadeIn 0.6s ease both;
}

/* 滾動進場（用 JS 配合 .is-visible class） */
.fade-on-scroll {
    opacity: 0;
    transform: translateY(16px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-on-scroll.is-visible {
    opacity: 1;
    transform: translateY(0);
}