/* ==========================================================================
   漂流誌 Drift Chronicle — 全域樣式表
   設計語彙：溫暖微米白／深炭灰／鼠尾草綠／大地駝色
   原則：手機優先、極致輕量、無框架、無多餘 JS
   ========================================================================== */

/* ---- 1. Reset ---- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

img,
svg {
  display: block;
  max-width: 100%;
}

/* ---- 2. Design Tokens ---- */
:root {
  /* 色彩計畫 */
  --color-bg: #fcfbfa;
  --color-bg-alt: #f5f1ec;
  --color-bg-header: rgba(252, 251, 250, 0.82);
  --color-text: #2c2a29;
  --color-text-soft: #6b6560;
  --color-accent: #4a5d4e;
  --color-accent-dark: #384938;
  --color-accent-light: #e7ece7;
  --color-link: #8c7355;
  --color-link-dark: #6f5a42;
  --color-border: #e6e1d8;

  /* 字體 */
  --font-heading: Georgia, "Songti TC", "PMingLiU", "Noto Serif TC", serif;
  --font-body: -apple-system, BlinkMacSystemFont, "PingFang TC",
    "Microsoft JhengHei", "Helvetica Neue", "Noto Sans TC", sans-serif;

  /* 版面 */
  --max-width: 720px;
  --side-pad: 24px;
  --radius: 14px;
}

/* ---- 3. Base ---- */
body {
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.8;
  letter-spacing: 0.05em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1,
h2,
h3,
h4 {
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: 1.45;
  letter-spacing: 0.02em;
  color: var(--color-text);
}

h1 {
  font-size: clamp(1.75rem, 5vw, 2.75rem);
  font-weight: 400;
}

h2 {
  font-size: clamp(1.35rem, 3.6vw, 1.85rem);
  font-weight: 600;
  margin: 2.25rem 0 1rem;
}

h3 {
  font-size: 1.15rem;
  font-weight: 600;
  margin: 1.5rem 0 0.75rem;
}

p {
  margin-bottom: 1.5em;
}

a {
  color: var(--color-link);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}

a:hover {
  color: var(--color-link-dark);
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
}

strong {
  color: var(--color-accent-dark);
}

blockquote {
  border-left: 3px solid var(--color-accent);
  padding-left: 1.25rem;
  margin: 2.25rem 0;
  font-style: italic;
  color: var(--color-text-soft);
  font-size: 1.05rem;
}

ul,
ol {
  padding-left: 1.4rem;
  margin-bottom: 1.5em;
}

li {
  margin-bottom: 0.5em;
}

hr.rule {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: 2.5rem 0;
}

/* ---- 4. 導覽列 Header / Nav（手機優先：垂直排列，桌面轉橫向）---- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-bg-header);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--color-border);
}

.nav-wrap {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0.85rem var(--side-pad) 0.6rem;
}

.logo {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  letter-spacing: 0.1em;
  color: var(--color-text);
  text-decoration: none;
  display: inline-block;
}

.logo:hover {
  color: var(--color-accent-dark);
}

.site-nav ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  margin-top: 0.6rem;
  padding: 0;
}

.site-nav a {
  display: block;
  padding: 0.55rem 0.6rem;
  border-radius: 8px;
  color: var(--color-text-soft);
  text-decoration: none;
  font-size: 0.95rem;
  letter-spacing: 0.04em;
}

.site-nav a:hover,
.site-nav a.active {
  color: var(--color-accent-dark);
  background: var(--color-accent-light);
}

@media (min-width: 768px) {
  .nav-wrap {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.1rem 32px;
  }
  .site-nav ul {
    flex-direction: row;
    gap: 0.5rem;
    margin-top: 0;
  }
}

/* ---- 5. 主內文容器 ---- */
main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--side-pad);
}

/* ---- 6. Hero 區塊（呼吸感光暈為簽名視覺元素）---- */
.hero {
  position: relative;
  text-align: center;
  padding: 3.75rem 0 2.5rem;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  top: 46%;
  left: 50%;
  width: 320px;
  height: 320px;
  background: radial-gradient(circle, rgba(74, 93, 78, 0.18), transparent 70%);
  transform: translate(-50%, -50%) scale(0.9);
  animation: breathe 6s ease-in-out infinite;
  z-index: -1;
}

@keyframes breathe {
  0%,
  100% {
    transform: translate(-50%, -50%) scale(0.85);
    opacity: 0.55;
  }
  50% {
    transform: translate(-50%, -50%) scale(1.2);
    opacity: 1;
  }
}

@media (prefers-reduced-motion: reduce) {
  .hero::before {
    animation: none;
  }
}

.eyebrow {
  display: inline-block;
  font-size: 0.8rem;
  letter-spacing: 0.22em;
  color: var(--color-accent);
  text-transform: uppercase;
  margin-bottom: 1rem;
}

.hero h1 {
  max-width: 15ch;
  margin: 0 auto;
}

.hero .lead {
  max-width: 48ch;
  margin: 1.1rem auto 0;
  color: var(--color-text-soft);
  font-size: 1.05rem;
}

/* ---- 7. 分隔符（葉形簽名圖示，取代通用編號標記）---- */
.divider {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  margin: 3rem 0;
  color: var(--color-accent);
}

.divider .line {
  height: 1px;
  width: 48px;
  background: var(--color-border);
}

.divider svg {
  width: 22px;
  height: 22px;
}

/* ---- 8. 卡片：文章 / 服務 ---- */
.article-card {
  padding: 1.75rem 0;
  border-bottom: 1px solid var(--color-border);
}

.article-card:last-child {
  border-bottom: none;
}

.article-card figure {
  margin: 0 0 1rem;
  border-radius: var(--radius);
  overflow: hidden;
}

.article-card img {
  width: 100%;
  height: auto;
  border-radius: var(--radius);
}

.article-card h2,
.article-card h3 {
  margin: 0 0 0.5rem;
}

.article-card p {
  color: var(--color-text-soft);
  margin-bottom: 0.85rem;
}

.service-card {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.85rem;
  margin-bottom: 1.5rem;
}

.service-card h3 {
  margin-top: 0;
  color: var(--color-accent-dark);
}

.service-card .price {
  display: inline-block;
  font-size: 0.82rem;
  letter-spacing: 0.05em;
  color: var(--color-text-soft);
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  padding: 0.25rem 0.9rem;
  margin-top: 0.5rem;
}

/* ---- 9. 按鈕 / 連結型 CTA ---- */
.btn {
  display: inline-block;
  padding: 0.65rem 1.6rem;
  border: 1px solid var(--color-accent);
  color: var(--color-accent-dark);
  border-radius: 999px;
  text-decoration: none;
  font-size: 0.92rem;
  letter-spacing: 0.04em;
  transition: background 0.2s ease, color 0.2s ease;
}

.btn:hover {
  background: var(--color-accent);
  color: #fff;
}

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

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

/* ---- 10. 心靈樹洞表單 ---- */
.soul-box {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: 20px;
  padding: 2.25rem 1.5rem;
  margin: 3rem 0 3.5rem;
}

.soul-box .eyebrow {
  margin-bottom: 0.75rem;
}

.soul-box h2 {
  margin-top: 0;
}

.soul-box .intro {
  color: var(--color-text-soft);
  margin-bottom: 1.75rem;
}

.soul-form label {
  display: block;
  font-size: 0.85rem;
  letter-spacing: 0.03em;
  color: var(--color-text-soft);
  margin-bottom: 0.4rem;
}

.soul-form input,
.soul-form textarea {
  width: 100%;
  padding: 0.8rem 0.9rem;
  margin-bottom: 1.35rem;
  border: 1px solid var(--color-border);
  border-radius: 10px;
  background: #fff;
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--color-text);
  letter-spacing: 0.02em;
}

.soul-form textarea {
  min-height: 150px;
  resize: vertical;
  line-height: 1.7;
}

.soul-form .field-note {
  font-size: 0.8rem;
  color: var(--color-text-soft);
  margin-top: -1rem;
  margin-bottom: 1.35rem;
}

.soul-form button {
  width: 100%;
  background: var(--color-accent);
  color: #fff;
  border: none;
  padding: 0.9rem 2rem;
  border-radius: 999px;
  font-size: 1rem;
  letter-spacing: 0.08em;
  cursor: pointer;
  font-family: var(--font-body);
  transition: background 0.2s ease;
}

.soul-form button:hover {
  background: var(--color-accent-dark);
}

@media (min-width: 480px) {
  .soul-form button {
    width: auto;
  }
}

/* ---- 11. Figure / Caption ---- */
figure {
  margin: 2rem 0;
}

figcaption {
  font-size: 0.82rem;
  color: var(--color-text-soft);
  margin-top: 0.6rem;
  text-align: center;
  letter-spacing: 0.03em;
}

/* ---- 12. 文章專屬版型 ---- */
.article-header {
  padding: 2.5rem 0 1.5rem;
  text-align: center;
}

.article-header .meta {
  font-size: 0.85rem;
  color: var(--color-text-soft);
  margin-top: 1rem;
}

.article-body p {
  margin-bottom: 1.6em;
}

/* ---- 13. Footer ---- */
.site-footer {
  border-top: 1px solid var(--color-border);
  margin-top: 4rem;
  padding: 2.5rem var(--side-pad) 3rem;
  background: var(--color-bg-alt);
}

.footer-wrap {
  max-width: var(--max-width);
  margin: 0 auto;
  text-align: center;
}

.footer-brand {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  color: var(--color-text);
  margin-bottom: 0.4rem;
}

.footer-tagline {
  font-size: 0.9rem;
  color: var(--color-text-soft);
  margin-bottom: 1.5rem;
}

.footer-nav ul {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1.25rem;
  padding: 0;
  margin-bottom: 1.5rem;
}

.footer-nav a {
  color: var(--color-text-soft);
  text-decoration: none;
  font-size: 0.9rem;
}

.footer-nav a:hover {
  color: var(--color-accent-dark);
}

.footer-copy {
  font-size: 0.78rem;
  color: var(--color-text-soft);
  opacity: 0.8;
}

/* ---- 14. 關於頁專屬 ---- */
.about-portrait {
  border-radius: var(--radius);
  overflow: hidden;
  margin: 2rem 0;
}

.pull-note {
  background: var(--color-accent-light);
  border-radius: var(--radius);
  padding: 1.5rem 1.75rem;
  margin: 2rem 0;
  color: var(--color-accent-dark);
  font-size: 0.98rem;
}

/* ---- 15. Utility ---- */
.text-center {
  text-align: center;
}

.mt-lg {
  margin-top: 3rem;
}