/* modern.css - Medium 風格簡約設計 */

:root {
  --bg: #ffffff;
  --bg-alt: #f5f5f5;
  --primary: #151515;
  --secondary: #6b6b6b;
  --accent: #1b7c71;
  --accent-dark: #156b62;
  --accent-bg: #e3f5f3;
  --on-accent: #ffffff;
  --border: #e2e2e2;
  --radius: 6px;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
  --shadow-hover: 0 8px 32px rgba(0, 0, 0, 0.1);
  --font-mono: 'MesloLGS NF', 'SFMono-Regular', Menlo, Consolas, monospace;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #212121;
    --bg-alt: #2b2b2b;
    --primary: #d0d0d0;
    --secondary: #9a9a9a;
    --accent: #7dd6cf;
    --accent-dark: #9fe4de;
    --accent-bg: rgba(125, 214, 207, 0.15);
    --on-accent: #12302b;
    --border: #3a3a3a;
    --shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
    --shadow-hover: 0 8px 32px rgba(0, 0, 0, 0.55);
  }
}

:root[data-theme="dark"] {
  --bg: #212121;
  --bg-alt: #2b2b2b;
  --primary: #d0d0d0;
  --secondary: #9a9a9a;
  --accent: #7dd6cf;
  --accent-dark: #9fe4de;
  --accent-bg: rgba(125, 214, 207, 0.15);
  --border: #3a3a3a;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
  --shadow-hover: 0 8px 32px rgba(0, 0, 0, 0.55);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--primary);
  font-family: 'Inter', 'Noto Sans TC', -apple-system, BlinkMacSystemFont, sans-serif;
  line-height: 1.6;
  transition: background 0.2s, color 0.2s;
}

a {
  color: inherit;
}

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

img {
  max-width: 100%;
}

.container {
  max-width: 880px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ---- Header / Nav ---- */

header {
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-flex {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  height: 64px;
  gap: 0.5rem;
}

.logo {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--primary);
  text-decoration: none;
  letter-spacing: 0.2px;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-list a {
  color: var(--primary);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
  padding: 0.3em 0.1em;
  transition: color 0.2s;
}

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

.nav-divider {
  width: 1px;
  height: 20px;
  background: var(--border);
}

.nav-blog {
  color: var(--accent) !important;
}

.theme-toggle {
  background: none;
  border: 1px solid var(--border);
  border-radius: 50%;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  cursor: pointer;
  font-size: 0.95rem;
  padding: 0;
  transition: background 0.2s, color 0.2s, border-color 0.2s;
}

.theme-toggle:hover {
  background: var(--bg-alt);
  color: var(--accent);
  border-color: var(--accent);
}

/* ---- Hero ---- */

main {
  display: block;
}

.hero {
  padding: 4rem 0 3rem;
}

.hero-flex {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
  text-align: center;
}

.hero-img img {
  width: 140px;
  height: 140px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid var(--border);
  box-shadow: var(--shadow);
}

.hero-content h1 {
  font-family: var(--font-mono);
  font-size: 2.2rem;
  font-weight: 700;
  letter-spacing: -0.5px;
  margin: 0 0 0.3em;
}

.hero-content h2 {
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 400;
  color: var(--secondary);
  margin: 0 0 1.2em;
}

.hero-content h2 .prompt {
  color: var(--accent);
}

.hero-content h2 .cursor {
  color: var(--accent);
  animation: blink 1s step-end infinite;
}

@keyframes blink {
  50% { opacity: 0; }
}

@media (prefers-reduced-motion: reduce) {
  .hero-content h2 .cursor {
    animation: none;
  }
}

.social-links {
  display: flex;
  gap: 1.4rem;
  justify-content: center;
  list-style: none;
  margin: 0;
  padding: 0;
}

.social-links a {
  color: var(--secondary);
  font-size: 1.4rem;
  transition: color 0.2s;
}

.social-links a:hover {
  color: var(--accent);
}

/* ---- Sections ---- */

section {
  padding: 3rem 0;
}

section + section {
  border-top: 1px solid var(--border);
}

section h2 {
  font-family: var(--font-mono);
  font-size: 1.4rem;
  font-weight: 700;
  margin: 0 0 1.8rem;
}

/* ---- Resume: experience / education cards ---- */

.resume-title {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  font-weight: 700;
  margin: 0 0 1.2rem;
  display: flex;
  align-items: center;
  gap: 0.6em;
}

.exp-list {
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
  margin-bottom: 2.5rem;
}

.exp-card {
  display: flex;
  align-items: center;
  gap: 1.2rem;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem 1.6rem;
  transition: border-color 0.2s;
}

.exp-card:hover {
  border-color: var(--accent);
}

.exp-icon-bg {
  flex-shrink: 0;
  width: 42px;
  height: 42px;
  border-radius: 8px;
  background: var(--accent-bg);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.05rem;
}

.exp-content {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: baseline;
  gap: 0.3em 1em;
}

.exp-info {
  flex: 1 1 0;
  min-width: 0;
}

.exp-role {
  font-size: 1.05rem;
  font-weight: 700;
}

.exp-company {
  color: var(--secondary);
  font-size: 0.95rem;
  flex-basis: 100%;
}

.exp-content-grouped {
  display: flex;
  flex-direction: column;
  flex-wrap: nowrap;
  justify-content: flex-start;
  align-items: stretch;
  gap: 0.5em;
}

.exp-role-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: baseline;
  gap: 0.2em 1em;
}

.exp-content-grouped .exp-company {
  margin-top: 0.2em;
}

.exp-date {
  font-family: var(--font-mono);
  color: var(--secondary);
  font-size: 0.85rem;
  white-space: nowrap;
  flex-shrink: 0;
  align-self: flex-start;
}

/* ---- Resume: skills / languages ---- */

.resume-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.resume-card {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.6rem;
}

.tag-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.9em;
}

.tag-list .tag-label {
  display: block;
  font-family: var(--font-mono);
  color: var(--secondary);
  font-size: 0.8rem;
  margin-bottom: 0.5em;
}

.tag-list .tag {
  display: inline-block;
  background: transparent;
  border: 1px solid var(--accent);
  color: var(--accent);
  font-family: var(--font-mono);
  border-radius: 4px;
  padding: 0.15em 0.6em;
  font-size: 0.82rem;
  margin: 0 0.4em 0.4em 0;
}

.languages-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.7em;
}

.languages-list li {
  display: flex;
  justify-content: space-between;
  font-size: 0.98rem;
}

.languages-list .level {
  font-family: var(--font-mono);
  color: var(--accent);
  font-size: 0.85rem;
  font-weight: 500;
}

.cv-btn {
  text-align: center;
}

.site-btn {
  display: inline-block;
  background: var(--accent);
  color: var(--on-accent);
  border: none;
  border-radius: var(--radius);
  padding: 0.8em 2.2em;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  transition: background 0.2s;
}

.site-btn:hover {
  background: var(--accent-dark);
}

/* ---- Contact ---- */

#contact {
  padding: 2rem 0;
}

#contact h2 {
  margin-bottom: 1rem;
}

.contact-flex {
  display: flex;
  justify-content: center;
}

.contact-icon-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 64px;
  height: 64px;
  border-radius: 50%;
  border: 1px solid var(--border);
  color: var(--primary);
  font-size: 1.6rem;
  transition: background 0.2s, color 0.2s, border-color 0.2s;
}

.contact-icon-link:hover {
  background: var(--accent-bg);
  color: var(--accent);
  border-color: var(--accent);
}

/* ---- Footer ---- */

footer {
  border-top: 1px solid var(--border);
  padding: 1.5em 0;
  text-align: center;
  color: var(--secondary);
  font-size: 0.9rem;
}

/* ---- Responsive ---- */

@media (max-width: 700px) {
  .nav-flex {
    height: auto;
    justify-content: center;
    padding: 0.8em 0;
  }

  .nav-list {
    flex-wrap: wrap;
    justify-content: center;
    gap: 1em;
  }

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

  .exp-content {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.2em;
  }

  .contact-card {
    flex-direction: column;
    text-align: center;
  }
}