/* ========================================
   turui Photography — Minimalist Style
   Inspired by quiet cinema & Japanese aesthetics
   ======================================== */

:root {
  --bg: #f7f5f2;
  --bg-soft: #f0ede8;
  --text: #2c2c2c;
  --text-muted: #6b6560;
  --text-light: #9a948c;
  --accent: #3d3a36;
  --border: #e5e1db;
  --white: #ffffff;
  --transition: 0.35s cubic-bezier(0.25, 0.1, 0.25, 1);
}

*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: "Noto Sans SC", "Helvetica Neue", sans-serif;
  background-color: var(--bg);
  color: var(--text);
  line-height: 1.7;
  font-weight: 300;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* Typography */
h1, h2, h3 {
  font-family: "Cormorant Garamond", "Noto Serif SC", serif;
  font-weight: 400;
  letter-spacing: 0.02em;
}

a {
  color: inherit;
  text-decoration: none;
  transition: opacity var(--transition);
}

a:hover {
  opacity: 0.65;
}

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

/* Language Switcher */
.lang-switch {
  position: fixed;
  top: 32px;
  right: 40px;
  z-index: 1001;
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.lang-btn {
  background: none;
  border: none;
  color: var(--text-light);
  cursor: pointer;
  font-family: inherit;
  font-size: 12px;
  letter-spacing: 0.1em;
  padding: 2px 4px;
  transition: color var(--transition);
}

.lang-btn.active {
  color: var(--text);
}

.lang-btn:hover {
  color: var(--text);
}

.lang-divider {
  color: var(--text-light);
  opacity: 0.5;
}

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 28px 160px 28px 40px;
  background: linear-gradient(to bottom, var(--bg) 60%, transparent);
  transition: background var(--transition);
}

.logo {
  font-family: "Cormorant Garamond", serif;
  font-size: 22px;
  font-weight: 400;
  letter-spacing: 0.18em;
  text-transform: lowercase;
  color: var(--text);
}

.nav {
  display: flex;
  gap: 36px;
}

.nav-link {
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-muted);
  position: relative;
}

.nav-link::after {
  content: "";
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--text);
  transition: width var(--transition);
}

.nav-link:hover {
  opacity: 1;
  color: var(--text);
}

.nav-link:hover::after {
  width: 100%;
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  width: 28px;
  height: 18px;
  position: relative;
  z-index: 1002;
}

.menu-toggle span {
  display: block;
  width: 100%;
  height: 1px;
  background: var(--text);
  position: absolute;
  left: 0;
  transition: all 0.3s ease;
}

.menu-toggle span:first-child {
  top: 4px;
}

.menu-toggle span:last-child {
  bottom: 4px;
}

.menu-toggle.active span:first-child {
  top: 8px;
  transform: rotate(45deg);
}

.menu-toggle.active span:last-child {
  bottom: 8px;
  transform: rotate(-45deg);
}

/* Mobile Menu */
.mobile-menu {
  position: fixed;
  inset: 0;
  background: var(--bg);
  z-index: 999;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 32px;
  opacity: 0;
  visibility: hidden;
  transition: all 0.4s ease;
}

.mobile-menu.active {
  opacity: 1;
  visibility: visible;
}

.mobile-link {
  font-family: "Cormorant Garamond", serif;
  font-size: 28px;
  letter-spacing: 0.08em;
  color: var(--text);
}

/* Hero */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 120px 40px 80px;
  position: relative;
}

.hero-subtitle {
  font-size: 13px;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--text-light);
  margin-bottom: 24px;
}

.hero-title {
  font-size: clamp(64px, 12vw, 120px);
  font-weight: 300;
  letter-spacing: 0.22em;
  text-transform: lowercase;
  color: var(--text);
  margin-bottom: 28px;
  line-height: 1;
}

.hero-desc {
  font-size: 15px;
  color: var(--text-muted);
  max-width: 360px;
  margin: 0 auto;
  line-height: 1.8;
  letter-spacing: 0.02em;
}

.hero-scroll {
  position: absolute;
  bottom: 48px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-light);
}

.scroll-line {
  width: 1px;
  height: 48px;
  background: linear-gradient(to bottom, var(--text-light), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
  0%, 100% { opacity: 0.4; transform: scaleY(1); }
  50% { opacity: 1; transform: scaleY(1.1); }
}

/* Section Common */
.section-header {
  text-align: center;
  margin-bottom: 64px;
}

.section-title {
  font-size: 36px;
  letter-spacing: 0.12em;
  margin-bottom: 12px;
  font-weight: 400;
}

.section-subtitle {
  font-size: 13px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-light);
}

/* Portfolio */
.portfolio {
  padding: 100px 40px 120px;
  max-width: 1400px;
  margin: 0 auto;
}

.filter-tabs {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px 28px;
  margin-bottom: 56px;
  max-width: 920px;
  margin-left: auto;
  margin-right: auto;
}

.filter-btn {
  background: none;
  border: none;
  font-family: inherit;
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-light);
  cursor: pointer;
  padding: 6px 0;
  position: relative;
  transition: color var(--transition);
}

.filter-btn::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--text);
  transition: width var(--transition);
}

.filter-btn.active,
.filter-btn:hover {
  color: var(--text);
}

.filter-btn.active::after {
  width: 100%;
}

/* Series Covers */
.series-covers {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px 24px;
  max-width: 1100px;
  margin: 0 auto;
}

.series-cover {
  position: relative;
  cursor: pointer;
  overflow: hidden;
}

.series-cover-img {
  aspect-ratio: 3 / 4;
  overflow: hidden;
  background: var(--bg-soft);
  display: flex;
  align-items: center;
  justify-content: center;
}

.series-cover-img img {
  width: 100%;
  height: 100%;
  object-fit: contain; /* 完整显示，不裁切水印和文字 */
  transition: transform 0.7s cubic-bezier(0.25, 0.1, 0.25, 1);
}

.series-cover:hover .series-cover-img img {
  transform: scale(1.02);
}

.series-cover-info {
  padding: 18px 0 0;
  text-align: center;
}

.series-cover-info h3 {
  font-family: "Cormorant Garamond", "Noto Serif SC", serif;
  font-size: 20px;
  font-weight: 400;
  letter-spacing: 0.08em;
  margin-bottom: 6px;
  color: var(--text);
}

.series-cover-info span {
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-light);
}

.series-detail {
  max-width: 1100px;
  margin: 0 auto;
}

.series-detail.hidden {
  display: none;
}

.series-covers.hidden {
  display: none;
}

.series-back {
  background: none;
  border: none;
  font-family: inherit;
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  cursor: pointer;
  margin-bottom: 32px;
  padding: 0;
  transition: color var(--transition);
}

.series-back:hover {
  color: var(--text);
}

.series-detail-title {
  font-family: "Cormorant Garamond", "Noto Serif SC", serif;
  font-size: 28px;
  font-weight: 400;
  letter-spacing: 0.1em;
  text-align: center;
  margin-bottom: 48px;
}

.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px 20px;
}

.portfolio-item {
  position: relative;
  overflow: hidden;
  cursor: pointer;
  transition: opacity var(--transition);
}

.portfolio-item.hidden {
  display: none;
}

.portfolio-img {
  aspect-ratio: 4 / 5;
  background: var(--bg-soft);
  overflow: hidden;
  position: relative;
}

.portfolio-img.placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(145deg, #ebe7e1, #e0dbd4);
}

.placeholder-text {
  font-family: "Cormorant Garamond", serif;
  font-size: 32px;
  color: var(--text-light);
  opacity: 0.5;
  letter-spacing: 0.1em;
}

.portfolio-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.7s cubic-bezier(0.25, 0.1, 0.25, 1);
}

.portfolio-item:hover .portfolio-img img {
  transform: scale(1.04);
}

.portfolio-info {
  padding: 14px 0 0;
}

.portfolio-cat {
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-light);
}

/* About */
.about {
  padding: 100px 40px 120px;
  background: var(--bg-soft);
}

.about-grid {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 80px;
  align-items: center;
}

.about-img-placeholder {
  aspect-ratio: 3 / 4;
  background: linear-gradient(160deg, #e5e1db, #d9d4cc);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  letter-spacing: 0.1em;
  color: var(--text-light);
}

.about-content .section-title {
  text-align: left;
  margin-bottom: 32px;
}

.about-text p {
  font-size: 15px;
  line-height: 2;
  color: var(--text-muted);
  margin-bottom: 20px;
  max-width: 420px;
}

.about-text p:last-child {
  margin-bottom: 0;
}

/* Contact */
.contact {
  padding: 100px 40px 120px;
  max-width: 900px;
  margin: 0 auto;
}

.contact-content {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 80px;
  align-items: start;
}

.contact-item {
  margin-bottom: 36px;
}

.contact-label {
  display: block;
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-light);
  margin-bottom: 8px;
}

.contact-value {
  font-size: 16px;
  color: var(--text);
  letter-spacing: 0.02em;
}

.social-icons {
  display: flex;
  gap: 24px;
  margin-top: 10px;
  flex-wrap: wrap;
}

.social-link {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--text-muted);
  transition: color var(--transition), transform var(--transition);
  text-decoration: none;
}

.social-link:hover {
  color: var(--text);
  opacity: 1;
  transform: translateY(-2px);
}

.social-icon {
  width: 28px;
  height: 28px;
}

.social-name {
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.form-group {
  position: relative;
}

.form-group input,
.form-group textarea {
  width: 100%;
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--border);
  padding: 12px 0;
  font-family: inherit;
  font-size: 15px;
  color: var(--text);
  outline: none;
  transition: border-color var(--transition);
  resize: none;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--text);
}

.form-group label {
  position: absolute;
  top: 12px;
  left: 0;
  font-size: 14px;
  color: var(--text-light);
  pointer-events: none;
  transition: all 0.25s ease;
}

.form-group input:focus + label,
.form-group input:valid + label,
.form-group textarea:focus + label,
.form-group textarea:valid + label {
  top: -10px;
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.submit-btn {
  align-self: flex-start;
  background: none;
  border: 1px solid var(--text);
  padding: 14px 40px;
  font-family: inherit;
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text);
  cursor: pointer;
  transition: all var(--transition);
  margin-top: 8px;
}

.submit-btn:hover {
  background: var(--text);
  color: var(--bg);
}

/* Footer */
.footer {
  padding: 48px 40px;
  text-align: center;
  border-top: 1px solid var(--border);
}

.footer-text {
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.footer-note {
  font-size: 12px;
  color: var(--text-light);
  letter-spacing: 0.06em;
}

/* Responsive */
@media (max-width: 900px) {
  .nav {
    display: none;
  }

  .menu-toggle {
    display: block;
  }

  .header {
    padding: 28px 70px 28px 40px;
  }

  .lang-switch {
    right: 70px;
  }

  .portfolio-grid {
    grid-template-columns: 1fr 1fr;
    gap: 16px;
  }

  .series-covers {
    grid-template-columns: 1fr 1fr;
    gap: 20px 16px;
  }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .about-image {
    max-width: 320px;
    margin: 0 auto;
  }

  .about-content .section-title {
    text-align: center;
  }

  .about-text p {
    max-width: none;
    text-align: center;
  }

  .contact-content {
    grid-template-columns: 1fr;
    gap: 56px;
  }
}

@media (max-width: 600px) {
  .header {
    padding: 22px 60px 22px 24px;
  }

  .lang-switch {
    top: 24px;
    right: 60px;
  }

  .hero {
    padding: 100px 24px 60px;
  }

  .hero-title {
    letter-spacing: 0.14em;
  }

  .portfolio,
  .about,
  .contact {
    padding: 80px 24px;
  }

  .portfolio-grid {
    grid-template-columns: 1fr;
  }

  .series-covers {
    grid-template-columns: 1fr;
  }

  .filter-tabs {
    gap: 20px;
  }

  .section-title {
    font-size: 28px;
  }
}

/* ========== Lightbox ========== */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: rgba(20, 18, 16, 0.92);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.lightbox.active {
  opacity: 1;
  visibility: visible;
}

.lightbox-content {
  max-width: 92vw;
  max-height: 88vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.lightbox-content img {
  max-width: 100%;
  max-height: 88vh;
  object-fit: contain;
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.4);
}

.lightbox-close {
  position: absolute;
  top: 20px;
  right: 24px;
  background: none;
  border: none;
  color: #fff;
  font-size: 36px;
  line-height: 1;
  cursor: pointer;
  opacity: 0.7;
  transition: opacity 0.2s;
  z-index: 10;
  padding: 0;
}

.lightbox-close:hover {
  opacity: 1;
}

.lightbox-prev,
.lightbox-next {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: #fff;
  font-size: 28px;
  cursor: pointer;
  opacity: 0.6;
  transition: opacity 0.2s;
  padding: 16px 12px;
  z-index: 10;
}

.lightbox-prev:hover,
.lightbox-next:hover {
  opacity: 1;
}

.lightbox-prev {
  left: 12px;
}

.lightbox-next {
  right: 12px;
}

@media (max-width: 600px) {
  .lightbox-prev,
  .lightbox-next {
    font-size: 22px;
    padding: 12px 8px;
  }

  .lightbox-close {
    top: 12px;
    right: 16px;
    font-size: 30px;
  }
}

/* Chronological albums: retain original photo files and show complete frames. */
button.series-cover, button.portfolio-item { border: 0; padding: 0; background: transparent; color: inherit; font: inherit; width: 100%; text-align: inherit; }
.portfolio-img { aspect-ratio: auto; background: transparent; }
.portfolio-img img { height: auto; object-fit: contain; }
.portfolio-item:hover .portfolio-img img, .series-cover:hover .series-cover-img img { transform: none; }
.portfolio-grid { align-items: start; }
.series-detail-title { margin-bottom: 12px; }
.album-date { text-align: center; font-size: 12px; letter-spacing: .14em; color: var(--text-light); margin-bottom: 24px; }
.album-description { max-width: 620px; margin: 0 auto 48px; font-size: 14px; line-height: 2; color: var(--text-muted); }
.filter-tabs[hidden] { display: none; }
button:focus-visible { outline: 1px solid var(--text-muted); outline-offset: 5px; }

.contact-form-note { font-size: 12px; line-height: 1.8; color: var(--text-light); }

.about-portrait { width: 100%; height: auto; object-fit: contain; display: block; }