/* ---------------------------------------------
   Chihiro Mori — Portfolio
   Navy x Emerald x Salmon — fresh, smart, friendly
--------------------------------------------- */

:root {
  --color-bg: #FDFBF6;
  --color-bg-alt: #F1F7F2;
  --color-text: #22282F;
  --color-text-soft: #5A6560;
  --color-primary: #1B2A4A;      /* navy — grounding */
  --color-accent: #2A9D6F;       /* emerald — interactive accent */
  --color-accent-salmon: #F2896F; /* salmon — caption / decorative accent */
  --color-border: #E3ECE4;
  --color-card-bg: #FFFFFF;

  --font-serif: 'Lora', 'Noto Serif JP', Georgia, serif;
  --font-sans: 'Inter', 'Noto Sans JP', -apple-system, BlinkMacSystemFont, sans-serif;

  --max-width: 1080px;
  --transition: 0.25s ease;
}

* { box-sizing: border-box; }

[hidden] {
  display: none !important;
}

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 32px;
}

h1, h2, h3, h4 {
  font-family: var(--font-serif);
  font-weight: 500;
  color: var(--color-primary);
  line-height: 1.2;
  margin: 0 0 16px;
}

h2 { font-size: 2.1rem; }
h3 { font-size: 1.4rem; }
h4 { font-size: 1.15rem; }

p { margin: 0 0 16px; color: var(--color-text-soft); }

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

ul { padding-left: 20px; color: var(--color-text-soft); }
li { margin-bottom: 6px; }

/* Progress bar */
.progress-bar {
  position: fixed;
  top: 0; left: 0;
  height: 3px;
  width: 0%;
  background: var(--color-accent);
  z-index: 1000;
  transition: width 0.1s ease-out;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 500;
  background: rgba(253, 251, 246, 0.9);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--color-primary);
  letter-spacing: 0.02em;
}
.logo:hover { color: var(--color-primary); }

.main-nav {
  display: flex;
  gap: 32px;
}

.main-nav a {
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--color-text);
  position: relative;
  padding: 4px 0;
}

.main-nav a::after {
  content: '';
  position: absolute;
  left: 0; bottom: 0;
  width: 0%;
  height: 2px;
  background: var(--color-accent);
  transition: width var(--transition);
}

.main-nav a:hover::after { width: 100%; }
.main-nav a.active { color: var(--color-accent); }
.main-nav a.active::after { width: 100%; }

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 32px;
  height: 32px;
  background: none;
  border: none;
  cursor: pointer;
}
.nav-toggle span {
  display: block;
  height: 2px;
  background: var(--color-primary);
  border-radius: 2px;
}

/* Language switch */
.lang-switch {
  display: flex;
  align-items: center;
  border: 1px solid var(--color-border);
  border-radius: 20px;
  padding: 3px;
  background: var(--color-card-bg);
  flex-shrink: 0;
  margin-left: 24px;
}
.lang-btn {
  border: none;
  background: none;
  cursor: pointer;
  font-family: var(--font-sans);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-text-soft);
  padding: 6px 14px;
  border-radius: 16px;
  transition: background var(--transition), color var(--transition);
  white-space: nowrap;
}
.lang-btn:hover { color: var(--color-accent); }
.lang-btn.active {
  background: var(--color-primary);
  color: #fff;
}

/* Hero */
.hero {
  display: grid;
  grid-template-columns: 1.3fr 0.7fr;
  align-items: center;
  gap: 48px;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 100px 32px 96px;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--color-accent-salmon);
  margin-bottom: 12px;
}

.hero h1 {
  font-size: 3.4rem;
  margin-bottom: 20px;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--color-text-soft);
  max-width: 520px;
  margin-bottom: 32px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  margin-bottom: 28px;
  flex-wrap: wrap;
}

.btn {
  display: inline-block;
  padding: 12px 28px;
  border-radius: 24px;
  font-size: 0.95rem;
  font-weight: 600;
  transition: all var(--transition);
  border: 1px solid transparent;
  font-family: var(--font-sans);
  cursor: pointer;
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
  border-bottom: 2px solid var(--color-accent-salmon);
}
.btn-primary:hover {
  background: var(--color-accent);
  border-bottom-color: var(--color-accent);
  color: #fff;
}

.btn-outline {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: transparent;
}
.btn-outline:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  background: transparent;
}

.btn-sm { padding: 8px 20px; font-size: 0.85rem; }

.hero-links {
  font-size: 0.9rem;
  color: var(--color-text-soft);
}
.hero-links a { font-weight: 500; }
.hero-links .dot { margin: 0 8px; color: var(--color-border); }

.hero-photo { display: flex; justify-content: center; }

.photo-frame {
  width: 260px;
  height: 260px;
  border-radius: 50%;
  overflow: hidden;
  border: 3px solid var(--color-bg);
  outline: 1px solid var(--color-border);
  box-shadow: 0 20px 40px rgba(42, 157, 111, 0.18);
}

.photo-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.photo-placeholder .photo-frame,
.hero-photo.photo-placeholder .photo-frame {
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent), var(--color-accent-salmon));
}
.hero-photo.photo-placeholder img { display: none; }
.hero-photo.photo-placeholder .photo-frame::after {
  content: 'CM';
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  color: #fff;
  font-family: var(--font-serif);
  font-size: 3rem;
}

/* Sections */
.section {
  padding: 96px 0;
}
.section-alt {
  background: var(--color-bg-alt);
}

.section-label {
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--color-accent-salmon);
  margin-bottom: 10px;
}

.section-intro {
  max-width: 640px;
  font-size: 1.05rem;
}

.subsection-title {
  margin-top: 56px;
  padding-top: 8px;
  border-top: 1px solid var(--color-border);
}

/* About */
.about-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 56px;
  margin-top: 32px;
}

.about-text p { font-size: 1.02rem; }

.about-facts {
  display: flex;
  flex-direction: column;
  gap: 22px;
  border-left: 2px solid var(--color-border);
  padding-left: 24px;
}

.fact { display: flex; flex-direction: column; gap: 4px; }
.fact-label {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-accent-salmon);
  font-weight: 600;
}
.fact-value {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  color: var(--color-primary);
}

/* Timeline */
.timeline {
  margin-top: 40px;
  display: flex;
  flex-direction: column;
  gap: 36px;
}

.timeline-item {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 24px;
  padding-bottom: 36px;
  border-bottom: 1px solid var(--color-border);
}
.timeline-item:last-child { border-bottom: none; }

.timeline-date {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-accent-salmon);
  letter-spacing: 0.02em;
}

.timeline-content h3 { margin-bottom: 4px; }
.timeline-org {
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 8px;
  font-size: 0.95rem;
}

/* Cards */
.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 32px;
}
.card-grid.two-col { grid-template-columns: repeat(2, 1fr); }

.card {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  padding: 28px;
  transition: transform var(--transition), box-shadow var(--transition);
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 32px rgba(42, 157, 111, 0.16);
}

.card-tag {
  display: inline-block;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-weight: 600;
  color: var(--color-accent-salmon);
  margin-bottom: 12px;
}

.card-org {
  font-weight: 600;
  color: var(--color-text);
  font-size: 0.9rem;
  margin-bottom: 8px;
}

/* Skills */
.skills {
  margin-top: 32px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.skill-group-label {
  display: block;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 10px;
  font-size: 0.95rem;
}
.tags { display: flex; flex-wrap: wrap; gap: 8px; }
.tag {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  color: var(--color-text-soft);
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 0.85rem;
}
.section .tag { background: var(--color-bg); }
.section-alt .tag { background: var(--color-card-bg); }

/* Education */
.edu-block {
  margin-top: 32px;
  padding: 32px;
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: 16px;
}
.edu-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 8px;
}
.edu-date {
  font-size: 0.85rem;
  color: var(--color-accent-salmon);
  font-weight: 600;
}
.edu-degree {
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 16px;
}
.edu-list { margin: 0; }

/* Culture */
.culture-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 32px;
}
.culture-card {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  padding: 26px;
  transition: transform var(--transition), box-shadow var(--transition);
}
.culture-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 32px rgba(42, 157, 111, 0.16);
}
.culture-date {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-accent-salmon);
  margin-bottom: 10px;
}
.culture-link {
  font-weight: 600;
  font-size: 0.9rem;
}
.culture-link-group {
  display: flex;
  gap: 20px;
  margin-top: 8px;
}

/* Contact */
.contact-section { text-align: left; }
.contact-grid {
  margin-top: 32px;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}
.contact-item {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 24px 28px;
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  transition: transform var(--transition), box-shadow var(--transition);
}
.contact-item:hover {
  transform: translateY(-3px);
  box-shadow: 0 16px 32px rgba(42, 157, 111, 0.16);
}
.contact-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-accent-salmon);
  font-weight: 600;
}
.contact-value {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  color: var(--color-primary);
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--color-border);
  padding: 32px 0;
}
.footer-inner p {
  margin: 0;
  font-size: 0.85rem;
  color: var(--color-text-soft);
  text-align: center;
}

/* Résumé preview modal */
.resume-modal { position: fixed; inset: 0; z-index: 900; display: none; }
.resume-modal.open { display: block; }
.resume-modal-backdrop { position: absolute; inset: 0; background: rgba(27, 42, 74, 0.55); backdrop-filter: blur(2px); }
.resume-modal-panel {
  position: relative; width: min(92vw, 860px); height: min(88vh, 1000px); margin: 6vh auto 0;
  background: var(--color-card-bg); border-radius: 16px; overflow: hidden;
  display: flex; flex-direction: column; box-shadow: 0 30px 60px rgba(0,0,0,0.25);
}
.resume-modal-header { display: flex; align-items: center; justify-content: space-between; padding: 14px 20px; border-bottom: 1px solid var(--color-border); flex-wrap: wrap; gap: 8px; }
.resume-modal-header h3 { margin: 0; }
.resume-modal-actions { display: flex; align-items: center; gap: 12px; }
.resume-modal-close { border: none; background: none; font-size: 1.6rem; line-height: 1; color: var(--color-text-soft); cursor: pointer; padding: 0 4px; }
.resume-modal-close:hover { color: var(--color-accent); }
.resume-modal-frame { flex: 1; width: 100%; border: none; background: #525659; }
body.modal-open { overflow: hidden; }

@media (max-width: 600px) {
  .resume-modal-panel { width: 96vw; height: 92vh; margin-top: 3vh; }
}

/* Reveal-on-scroll animation */
.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Responsive */
@media (max-width: 880px) {
  .hero { grid-template-columns: 1fr; padding-top: 56px; }
  .hero-photo { order: -1; margin-bottom: 8px; }
  .photo-frame { width: 180px; height: 180px; }
  .hero h1 { font-size: 2.5rem; }
  .about-grid { grid-template-columns: 1fr; gap: 32px; }
  .card-grid, .card-grid.two-col, .culture-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .timeline-item { grid-template-columns: 1fr; gap: 6px; }

  .main-nav {
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    flex-direction: column;
    gap: 0;
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition);
  }
  .main-nav.open { max-height: 320px; }
  .main-nav a {
    padding: 16px 32px;
    border-bottom: 1px solid var(--color-border);
  }
  .nav-toggle { display: flex; }
}

@media (max-width: 520px) {
  .container { padding: 0 20px; }
  .section { padding: 64px 0; }
  .hero { padding: 48px 20px 64px; }
  .lang-switch { margin-left: 12px; }
  .lang-btn { padding: 5px 10px; font-size: 0.74rem; }
}