/* 個人網站 — 海事／驗船專業風格（配色參考 lr.org） */

:root {
  --lr-navy: #070d19;
  --lr-hero: #0d4665;
  --lr-teal: #00c5b7;
  --lr-teal-dark: #00a89c;
  --lr-muted: #727b9d;
  --lr-light: #eef5fb;
  --bg: #ffffff;
  --surface: #ffffff;
  --text: var(--lr-navy);
  --text-muted: var(--lr-muted);
  --text-on-dark: #ffffff;
  --accent: var(--lr-teal);
  --accent-soft: var(--lr-light);
  --border: #d8dee8;
  --radius: 4px;
  --font-sans: "Helvetica Neue", "Arial", "PingFang TC", "Noto Sans TC", "Microsoft JhengHei", system-ui, sans-serif;
  --max-width: 720px;
  --page-width: 1200px;
  --header-height: 72px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.65;
  color: var(--text);
  background: var(--bg);
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  color: var(--lr-teal-dark);
  text-decoration: underline;
}

img {
  max-width: 100%;
  height: auto;
}

/* 頁首 — 白底、簡潔導覽（類 lr.org） */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: #fff;
  border-bottom: 1px solid var(--border);
  box-shadow: 0 1px 0 rgba(7, 13, 25, 0.04);
}

.site-header__inner {
  max-width: var(--page-width);
  margin: 0 auto;
  padding: 0 1.5rem;
  min-height: var(--header-height);
  height: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.site-logo {
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: 0.02em;
  color: var(--lr-navy);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.65rem;
  line-height: 1.2;
}

.site-logo__text {
  display: flex;
  flex-direction: column;
}

.site-logo::before {
  content: "";
  width: 4px;
  height: 1.4rem;
  background: var(--lr-teal);
  border-radius: 1px;
}

.site-logo:hover {
  color: var(--lr-hero);
  text-decoration: none;
}

.site-logo__role {
  display: block;
  font-size: 0.7rem;
  font-weight: 500;
  color: var(--lr-muted);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.lang-switch {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
}

.site-nav a {
  color: var(--lr-navy);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: var(--lr-teal);
  text-decoration: none;
}

.site-header__end {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-left: auto;
  flex-wrap: wrap;
  justify-content: flex-end;
  min-width: 0;
}

.site-nav {
  display: flex;
  gap: 1.75rem;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.lang-switch a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 2.5rem;
  min-height: 2rem;
  padding: 0.25rem 0.65rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: #fff;
  color: var(--lr-navy);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-decoration: none;
}

.lang-switch a:hover {
  border-color: var(--accent);
  color: var(--accent);
  text-decoration: none;
}

.lang-switch a[aria-current="true"] {
  background: var(--accent-soft);
  border-color: var(--accent);
  color: var(--lr-hero);
  pointer-events: none;
}

.lang-badge {
  display: inline-block;
  margin-left: 0.35rem;
  padding: 0.1rem 0.4rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--lr-muted);
  vertical-align: middle;
}

.nav-toggle {
  display: none;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.4rem 0.6rem;
  cursor: pointer;
  font-size: 1.2rem;
  color: var(--lr-navy);
}

/* 全幅 Hero 帶（深藍底） */
.hero-banner {
  background: linear-gradient(135deg, var(--lr-hero) 0%, var(--lr-navy) 100%);
  color: var(--text-on-dark);
}

.hero-banner__inner {
  max-width: var(--page-width);
  margin: 0 auto;
  padding: 3rem 1.5rem 3.5rem;
  display: grid;
  gap: 2rem;
}

@media (min-width: 768px) {
  .hero-banner__inner {
    grid-template-columns: 200px 1fr;
    align-items: center;
    padding: 4rem 1.5rem 4.5rem;
  }
}

.hero-banner h1 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  line-height: 1.2;
  margin: 0 0 1rem;
  letter-spacing: -0.02em;
}

.hero-banner .lead {
  font-size: 1.1rem;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.88);
  margin: 0 0 1.5rem;
  max-width: 36rem;
}

.hero-banner__photo {
  width: 180px;
  height: auto;
  border-radius: var(--radius);
  border: 3px solid rgba(0, 197, 183, 0.5);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.25);
  justify-self: center;
}

@media (min-width: 768px) {
  .hero-banner__photo {
    width: 200px;
    justify-self: start;
  }
}

.hero__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  list-style: none;
  padding: 0;
  margin: 0;
}

.tag {
  display: inline-block;
  padding: 0.35rem 0.85rem;
  background: rgba(0, 197, 183, 0.2);
  color: #fff;
  border: 1px solid rgba(0, 197, 183, 0.45);
  border-radius: 2px;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.03em;
}

.btn {
  display: inline-block;
  padding: 0.75rem 1.35rem;
  background: var(--lr-teal);
  color: var(--lr-navy);
  font-weight: 700;
  font-size: 0.9rem;
  border-radius: var(--radius);
  text-decoration: none;
  transition: background 0.2s;
}

.btn:hover {
  background: #33d4c8;
  color: var(--lr-navy);
  text-decoration: none;
}

.btn--outline {
  background: transparent;
  color: #fff;
  border: 2px solid rgba(255, 255, 255, 0.7);
  margin-left: 0.75rem;
}

.btn--outline:hover {
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
}

/* 主內容 */
.site-main {
  max-width: var(--page-width);
  margin: 0 auto;
  padding: 3rem 1.5rem 4rem;
}

.site-main--alt {
  background: var(--lr-light);
  max-width: none;
  padding-left: 0;
  padding-right: 0;
}

.site-main--alt > * {
  max-width: var(--page-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

/* 價值主張列（仿 LR 三欄文案） */
.value-strip {
  background: var(--lr-light);
  padding: 2.5rem 0;
  margin: 0 0 3rem;
}

.value-strip__grid {
  max-width: var(--page-width);
  margin: 0 auto;
  padding: 0 1.5rem;
  display: grid;
  gap: 1.5rem;
}

@media (min-width: 768px) {
  .value-strip__grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
  }
}

.value-strip__item h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--lr-navy);
  margin: 0 0 0.5rem;
}

.value-strip__item p {
  margin: 0;
  font-size: 0.95rem;
  color: var(--lr-muted);
}

.section-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--lr-navy);
  margin: 0 0 0.35rem;
  letter-spacing: -0.02em;
}

.section-subtitle {
  color: var(--lr-muted);
  margin: 0 0 1.75rem;
  font-size: 1rem;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.25rem;
  margin-bottom: 3rem;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  transition: box-shadow 0.2s, border-color 0.2s;
  border-top: 3px solid var(--lr-teal);
}

a.card {
  display: block;
  text-decoration: none;
  color: inherit;
  cursor: pointer;
}

a.card:hover {
  border-color: var(--lr-teal);
  box-shadow: 0 8px 24px rgba(7, 13, 25, 0.08);
}

a.card:hover h3,
a.card:focus-visible h3 {
  color: var(--lr-teal);
}

a.card:focus-visible {
  outline: 2px solid var(--lr-teal);
  outline-offset: 2px;
}

.card:hover {
  border-color: var(--lr-teal);
  box-shadow: 0 8px 24px rgba(7, 13, 25, 0.08);
}

.card h3 {
  margin: 0 0 0.5rem;
  font-size: 1.1rem;
  font-weight: 700;
}

.card h3 a {
  color: var(--lr-navy);
  text-decoration: none;
}

.card h3 a:hover {
  color: var(--lr-teal);
}

.card .meta {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--lr-teal);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin: 0 0 0.75rem;
}

.card p {
  margin: 0;
  font-size: 0.95rem;
  color: var(--lr-muted);
}

/* 關於我 */
.profile {
  display: grid;
  gap: 2rem;
}

@media (min-width: 640px) {
  .profile {
    grid-template-columns: 200px 1fr;
    align-items: start;
  }
}

.profile__avatar {
  width: 200px;
  flex-shrink: 0;
}

.profile__photo {
  width: 100%;
  height: auto;
  display: block;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: 0 8px 24px rgba(7, 13, 25, 0.1);
}

.profile dl {
  margin: 1.5rem 0 0;
}

.profile dt {
  font-weight: 700;
  color: var(--lr-navy);
  margin-top: 1.25rem;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.profile dd {
  margin: 0.35rem 0 0;
  color: var(--text-muted);
}

/* 文章 */
.article-header {
  max-width: var(--max-width);
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border);
}

.article-header h1 {
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  font-weight: 700;
  line-height: 1.25;
  margin: 0 0 0.75rem;
  color: var(--lr-navy);
  letter-spacing: -0.02em;
}

.article-header .meta {
  color: var(--lr-muted);
  font-size: 0.9rem;
}

.article-body {
  max-width: var(--max-width);
}

.article-body h2 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--lr-navy);
  margin: 2rem 0 0.75rem;
}

.article-body h3 {
  font-size: 1.1rem;
  margin: 1.5rem 0 0.5rem;
}

.article-body p,
.article-body ul,
.article-body ol {
  margin: 0 0 1rem;
}

.article-body blockquote {
  margin: 1.5rem 0;
  padding: 1rem 1.25rem;
  border-left: 4px solid var(--lr-teal);
  background: var(--lr-light);
  color: var(--lr-navy);
}

.article-body pre,
.article-body code {
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  font-size: 0.9em;
}

.article-body pre {
  overflow-x: auto;
  padding: 1rem;
  background: var(--lr-light);
  border-radius: var(--radius);
}

.breadcrumb {
  font-size: 0.9rem;
  color: var(--lr-muted);
  margin-bottom: 1.5rem;
}

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

.category-list {
  list-style: none;
  padding: 0;
  margin: 0 0 2rem;
}

.category-list li {
  margin-bottom: 0.65rem;
  padding-left: 1rem;
  border-left: 3px solid var(--lr-teal);
}

.category-list a {
  font-weight: 600;
  color: var(--lr-navy);
}

.callout {
  padding: 1.25rem 1.5rem;
  background: var(--lr-light);
  border-left: 4px solid var(--lr-teal);
  border-radius: 0 var(--radius) var(--radius) 0;
  font-size: 0.95rem;
  color: var(--lr-muted);
  margin: 2rem 0;
}

/* 經歷／學歷時間軸 */
.timeline {
  margin: 2.5rem 0 3rem;
  max-width: 52rem;
}

.timeline__org {
  display: grid;
  grid-template-columns: 52px 1fr;
  gap: 1.25rem;
  margin-bottom: 2.5rem;
  padding-bottom: 2.5rem;
  border-bottom: 1px solid var(--border);
}

.timeline__org:last-child {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}

.timeline__logo {
  width: 48px;
  height: 48px;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 0.85rem;
  letter-spacing: 0.02em;
  flex-shrink: 0;
}

.timeline__logo--lr {
  background: var(--lr-teal);
  color: var(--lr-navy);
}

.timeline__logo--eg {
  background: #006341;
  color: #fff;
  letter-spacing: 0.06em;
}

.timeline__logo--nycu {
  background: #1e3a8a;
  color: #fff;
  font-size: 0.65rem;
}

.timeline__logo--ncku {
  background: #b91c1c;
  color: #fff;
  font-size: 0.65rem;
}

.timeline__org-head h3 {
  margin: 0 0 0.2rem;
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--lr-navy);
}

.timeline__org-meta {
  font-size: 0.9rem;
  color: var(--lr-muted);
  margin: 0 0 1.25rem;
}

.timeline__roles {
  list-style: none;
  padding: 0;
  margin: 0;
}

.timeline__role {
  padding: 0 0 1.5rem 1.25rem;
  margin-left: 0.25rem;
  border-left: 2px solid var(--lr-light);
  position: relative;
}

.timeline__role::before {
  content: "";
  position: absolute;
  left: -7px;
  top: 0.4rem;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--lr-teal);
  box-shadow: 0 0 0 2px #fff;
}

.timeline__role:last-child {
  padding-bottom: 0;
}

.timeline__role-title {
  font-weight: 700;
  color: var(--lr-navy);
  margin: 0 0 0.2rem;
  font-size: 1rem;
}

.timeline__role-dates {
  font-size: 0.85rem;
  color: var(--lr-teal);
  font-weight: 600;
  margin: 0 0 0.35rem;
}

.timeline__role-loc {
  font-size: 0.85rem;
  color: var(--lr-muted);
  margin: 0 0 0.5rem;
}

.timeline__role-desc {
  font-size: 0.95rem;
  color: var(--lr-muted);
  margin: 0;
  line-height: 1.65;
}

.timeline__role-desc ul {
  margin: 0.5rem 0 0;
  padding-left: 1.2rem;
}

.timeline__role-desc li {
  margin-bottom: 0.35rem;
}

.timeline__gpa {
  font-size: 0.9rem;
  color: var(--lr-navy);
  font-weight: 600;
  margin: 0 0 0.5rem;
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 0.75rem;
  list-style: none;
  padding: 0;
}

.skill-tag {
  font-size: 0.78rem;
  padding: 0.25rem 0.65rem;
  background: var(--lr-light);
  color: var(--lr-hero);
  border-radius: 2px;
  font-weight: 500;
}

.about-summary {
  max-width: 52rem;
}

.about-summary + .section-title {
  margin-top: 2.5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
}

/* 頁尾 — 深藍底 */
.site-footer {
  background: var(--lr-navy);
  color: rgba(255, 255, 255, 0.75);
  padding: 2.5rem 1.5rem 3rem;
  font-size: 0.9rem;
}

.site-footer__inner {
  max-width: var(--page-width);
  margin: 0 auto;
}

.site-footer a {
  color: var(--lr-teal);
}

.site-footer a:hover {
  color: #fff;
}

.site-footer__brand {
  color: #fff;
  font-weight: 700;
  margin: 0 0 0.5rem;
}

@media (min-width: 641px) {
  .nav-toggle {
    display: none;
  }
}

@media (max-width: 640px) {
  .nav-toggle {
    display: block;
  }

  .site-nav {
    display: none;
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    flex-direction: column;
    background: #fff;
    border-bottom: 1px solid var(--border);
    padding: 1rem 1.5rem 1.25rem;
    gap: 1rem;
  }

  .site-nav.is-open {
    display: flex;
  }

  .site-header__inner {
    position: relative;
    flex-wrap: wrap;
  }

  .site-header__end {
    margin-left: auto;
    flex-wrap: nowrap;
    justify-content: flex-end;
    gap: 0.5rem;
  }

  .lang-switch {
    display: inline-flex;
  }

  .btn--outline {
    margin-left: 0;
    margin-top: 0.75rem;
  }
}