/* iamchh.com — static prototype */

@font-face {
  font-family: "Cormorant Garamond";
  src: url("../fonts/cormorant-garamond.woff") format("woff");
  font-weight: 300 700;
  font-style: normal;
  font-display: swap;
}

:root {
  --bg: #0B0B0C;
  --bg-elev: #121214;
  --bg-card: #101012;
  --bg-pill: #161617;
  --line: #262628;
  --line-soft: #1C1C1E;
  --text: #EEEBE4;
  --text-soft: #B7B1A7;
  --text-muted: #8E8980;
  --gold: #D4A574;
  --gold-deep: #C4A07A;
  --gold-dim: #8A6B48;
  --ink: #16120E;
  --radius: 10px;
  --radius-sm: 8px;
  --header-h: 76px;
  --tabbar-h: 64px;
  --wrap: 1120px;
  --font-serif: "Cormorant Garamond", "Noto Serif SC", "Songti SC", "STSong", "Source Han Serif SC", "SimSun", Georgia, "Times New Roman", serif;
  --font-sans: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", "Source Han Sans SC", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --ease: 0.22s ease;
}

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

html {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
  border: 0;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
}

h1, h2, h3, h4, p {
  margin: 0;
}

:focus {
  outline: none;
}

:focus-visible {
  outline: 1px solid var(--gold);
  outline-offset: 3px;
}

.skip {
  position: absolute;
  left: 12px;
  top: -40px;
  z-index: 80;
  background: var(--gold);
  color: var(--ink);
  padding: 6px 12px;
  border-radius: 4px;
}

.skip:focus {
  top: 12px;
}

.wrap {
  width: min(var(--wrap), calc(100% - 96px));
  margin-inline: auto;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  height: var(--header-h);
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.header-inner {
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-family: var(--font-serif);
  font-weight: 500;
  font-size: 1.45rem;
  letter-spacing: 0.01em;
  color: var(--gold);
  line-height: 1;
}

.logo:hover {
  color: #e0b888;
}

.nav-desktop {
  display: flex;
  align-items: center;
  gap: 2.15rem;
}

.nav-desktop a {
  position: relative;
  font-size: 0.9375rem;
  color: var(--text-soft);
  letter-spacing: 0.04em;
  padding: 0.2rem 0;
  transition: color var(--ease);
}

.nav-desktop a:hover {
  color: var(--text);
}

.nav-desktop a.is-active {
  color: var(--text);
}

.nav-desktop a.is-active::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -9px;
  height: 1.5px;
  background: var(--gold);
}

.menu-toggle {
  display: none;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  margin-right: -8px;
}

.menu-toggle span,
.menu-toggle span::before,
.menu-toggle span::after {
  display: block;
  width: 18px;
  height: 1.5px;
  background: var(--text);
  border-radius: 1px;
  position: relative;
  transition: transform var(--ease), opacity var(--ease);
}

.menu-toggle span::before,
.menu-toggle span::after {
  content: "";
  position: absolute;
  left: 0;
}

.menu-toggle span::before { top: -6px; }
.menu-toggle span::after { top: 6px; }

body.menu-open .menu-toggle span {
  background: transparent;
}
body.menu-open .menu-toggle span::before,
body.menu-open .menu-toggle span::after {
  top: 0;
  transform-origin: center;
}
body.menu-open .menu-toggle span::before {
  transform: rotate(45deg);
}
body.menu-open .menu-toggle span::after {
  transform: rotate(-45deg);
}

/* Mobile drawer */
.drawer {
  display: none;
  position: fixed;
  inset: var(--header-h) 0 0 0;
  z-index: 35;
  background: var(--bg);
  padding: 1.25rem 1.5rem 6rem;
  overflow: auto;
}

body.menu-open {
  overflow: hidden;
}

body.menu-open .drawer {
  display: block;
}

.drawer nav {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.drawer a {
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 400;
  color: var(--text-soft);
  padding: 0.55rem 0;
  border-bottom: 1px solid var(--line-soft);
}

.drawer a.is-active,
.drawer a:hover {
  color: var(--gold);
}

/* Hero */
.hero {
  padding: 4.75rem 0 0;
}

.hero h1 {
  font-family: var(--font-serif);
  font-weight: 400;
  font-variation-settings: "wght" 400;
  font-size: clamp(4.6rem, 12vw, 7.75rem);
  line-height: 0.9;
  letter-spacing: -0.03em;
  color: #F2EFE8;
}

.hero .lede {
  margin-top: 1.55rem;
  font-size: 1.05rem;
  color: var(--text-soft);
  letter-spacing: 0.02em;
  font-weight: 400;
}

.hero .lede .hl {
  color: var(--gold);
}

.hero .cta {
  margin-top: 1.7rem;
}

/* Text links */
.text-link {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  color: var(--gold);
  font-size: 0.95rem;
  letter-spacing: 0.04em;
  transition: color var(--ease), transform var(--ease);
}

.text-link .arrow {
  transition: transform var(--ease);
}

.text-link:hover {
  color: #e0b888;
}

.text-link:hover .arrow {
  transform: translateX(4px);
}

/* Featured works */
.featured {
  padding: 6.5rem 0 5.5rem;
}

.section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.15rem;
}

.section-kicker {
  font-size: 0.95rem;
  color: var(--text-muted);
  font-weight: 400;
  letter-spacing: 0.04em;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.work-card {
  display: grid;
  grid-template-areas: "media" "body";
  color: inherit;
  min-width: 0;
}

.work-card__media {
  grid-area: media;
  position: relative;
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: #0a0a0c;
  border: 1px solid var(--line-soft);
  aspect-ratio: 16 / 10;
}

.work-card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.work-card:hover .work-card__media img {
  transform: scale(1.03);
}

.work-card__body {
  grid-area: body;
  padding-top: 0.95rem;
  min-width: 0;
}

.work-card__cat,
.work-card__go,
.work-card__desc {
  display: none;
}

.work-card h3 {
  font-size: 1.05rem;
  font-weight: 400;
  color: var(--text);
  letter-spacing: 0.02em;
}

.work-card .work-card__sub {
  margin-top: 0.28rem;
  font-size: 0.875rem;
  color: var(--text-muted);
}

.badge {
  display: none;
  position: absolute;
  top: 10px;
  left: 10px;
  z-index: 1;
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  color: var(--gold);
  background: rgba(11, 11, 12, 0.72);
  border: 1px solid color-mix(in srgb, var(--gold) 45%, transparent);
  border-radius: 999px;
  padding: 0.12rem 0.48rem;
  backdrop-filter: blur(6px);
}

/* Page heads */
.page-head {
  padding: 3.4rem 0 2.1rem;
}

.page-head h1 {
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: clamp(3.4rem, 8vw, 5.6rem);
  line-height: 1;
  letter-spacing: -0.02em;
  color: #F2EFE8;
}

.page-head .sub {
  margin-top: 0.9rem;
  color: var(--text-muted);
  font-size: 1rem;
}

/* Filters */
.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin: 0 0 2.1rem;
}

.collect-tools {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.7rem;
  margin: 0 0 2.1rem;
}

.collect-tools .filters {
  margin: 0;
}

.collect-search {
  display: block;
  width: min(100%, 26rem);
}

.collect-search input {
  width: 100%;
  appearance: none;
  background: var(--bg-pill);
  color: var(--text);
  border: 1px solid #2A2A2C;
  border-radius: 999px;
  padding: 0.48rem 1.05rem;
  font: inherit;
  font-size: 0.875rem;
  letter-spacing: 0.02em;
}

.collect-search input::placeholder {
  color: var(--text-muted);
}

.collect-search input:hover {
  border-color: var(--gold-dim);
}

.collect-empty {
  margin: 0 0 4rem;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.filter-btn {
  appearance: none;
  border-radius: 999px;
  padding: 0.42rem 1.05rem;
  font-size: 0.875rem;
  letter-spacing: 0.04em;
  color: var(--text-soft);
  background: var(--bg-pill);
  border: 1px solid #2A2A2C;
  transition: background var(--ease), color var(--ease), border-color var(--ease);
}

.filter-btn:hover {
  border-color: var(--gold-dim);
  color: var(--text);
}

.filter-btn.is-active {
  background: var(--gold-deep);
  border-color: var(--gold-deep);
  color: var(--ink);
}

/* Collection */
.collect-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  column-gap: 4.25rem;
  row-gap: 0;
  padding-bottom: 5rem;
  border-bottom: 1px solid var(--line);
}

.collect-grid.is-empty {
  border-bottom: none;
  padding-bottom: 0;
}

.collect-item {
  display: block;
  padding: 1.35rem 0 1.3rem;
  border-top: 1px solid var(--line);
  min-width: 0;
  transition: background var(--ease);
}

.collect-item:hover h3 {
  color: var(--gold);
}

.collect-item__cat {
  font-size: 0.8rem;
  color: var(--text-muted);
  letter-spacing: 0.04em;
}

.collect-item__top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 0.32rem;
}

.collect-item h3 {
  font-size: 1.08rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  color: var(--text);
  line-height: 1.45;
  transition: color var(--ease);
  min-width: 0;
}

.collect-item__arrow {
  color: var(--gold);
  font-size: 1rem;
  flex: none;
  transition: transform var(--ease);
  align-self: center;
}

.collect-item:hover .collect-item__arrow {
  transform: translate(3px, -3px);
}

.collect-item__src {
  margin-top: 0.4rem;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.collect-item__why {
  margin-top: 0.28rem;
  font-size: 0.875rem;
  color: var(--text-soft);
}

.collect-item.is-hidden {
  display: none;
}

/* Works grid (full list) */
.works-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.75rem 1.5rem;
  padding-bottom: 5.5rem;
}

.works-grid .work-card {
  background: var(--bg-card);
  border: 1px solid var(--line-soft);
  border-radius: 12px;
  overflow: hidden;
  transition: border-color var(--ease), transform var(--ease);
}

.works-grid .work-card:hover {
  border-color: color-mix(in srgb, var(--gold) 35%, var(--line));
  transform: translateY(-2px);
}

.works-grid .work-card__media {
  border: 0;
  border-radius: 0;
  aspect-ratio: 16 / 10;
}

.works-grid .work-card__body {
  padding: 1rem 1.05rem 1.15rem;
}

.works-grid .work-card__cat {
  display: inline-block;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--gold);
  border: 1px solid color-mix(in srgb, var(--gold) 40%, transparent);
  border-radius: 999px;
  padding: 0.12rem 0.5rem;
  margin-bottom: 0.55rem;
}

.works-grid .work-card__desc {
  display: block;
  margin-top: 0.4rem;
  font-size: 0.84rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.works-grid .work-card .work-card__sub {
  display: none;
}

.works-grid .work-card.is-hidden {
  display: none;
}

/* Blog list */
.blog-list {
  display: flex;
  flex-direction: column;
  padding-bottom: 5.5rem;
  max-width: 760px;
}

.blog-item {
  display: block;
  padding: 1.6rem 0 1.55rem;
  border-top: 1px solid var(--line);
}

.blog-item:last-child {
  border-bottom: 1px solid var(--line);
}

.blog-item__meta {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  font-size: 0.8rem;
  color: var(--text-muted);
  letter-spacing: 0.04em;
}

.blog-item h3 {
  margin-top: 0.45rem;
  font-size: 1.25rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  line-height: 1.4;
  transition: color var(--ease);
}

.blog-item:hover h3 {
  color: var(--gold);
}

.blog-item p {
  margin-top: 0.45rem;
  font-size: 0.92rem;
  color: var(--text-soft);
}

/* About */
.about {
  padding-bottom: 5.5rem;
  max-width: 680px;
}

.about .intro {
  font-size: 1.12rem;
  color: var(--text-soft);
  line-height: 1.8;
  margin-bottom: 3rem;
}

.about-block {
  padding: 1.5rem 0;
  border-top: 1px solid var(--line);
}

.about-block h2 {
  font-size: 0.8rem;
  font-weight: 400;
  letter-spacing: 0.14em;
  color: var(--gold);
  margin-bottom: 0.7rem;
}

.about-block p,
.about-block li {
  color: var(--text-soft);
  font-size: 1rem;
  line-height: 1.8;
}

.about-block ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.about-block li + li {
  margin-top: 0.35rem;
}

.about-block a {
  color: var(--gold);
}

.about-block a:hover {
  color: #e0b888;
}

.contact-row {
  display: grid;
  grid-template-columns: 4.5rem 1fr;
  gap: 0.6rem 1rem;
  align-items: baseline;
}

.contact-row dt {
  color: var(--text-muted);
  font-size: 0.88rem;
}

.contact-row dd {
  margin: 0;
}

.about-note {
  margin-top: 2.4rem;
  font-size: 0.82rem;
  color: var(--text-muted);
}

.about .back {
  margin-top: 2.2rem;
}

/* Article / work detail */
.article {
  padding: 3.2rem 0 5.5rem;
  max-width: 740px;
}

.crumb {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 1.6rem;
}

.crumb a:hover {
  color: var(--gold);
}

.article h1 {
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: clamp(2.1rem, 5vw, 3.15rem);
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.article .meta {
  margin: 0.9rem 0 1.8rem;
  color: var(--text-muted);
  font-size: 0.88rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem 1rem;
  align-items: center;
}

.article .hero-media {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line-soft);
  margin: 0 0 2rem;
  background: #0a0a0c;
}

.article .hero-media img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.article .body p + p {
  margin-top: 1em;
}

.article .body p {
  color: var(--text-soft);
  font-size: 1.02rem;
  line-height: 1.85;
}

.article .back {
  margin-top: 2.6rem;
}

main {
  min-height: calc(100vh - var(--header-h) - 5.5rem);
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--line-soft);
  padding: 1.6rem 0 2rem;
  color: var(--text-muted);
  font-size: 0.8rem;
  letter-spacing: 0.04em;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.site-footer a:hover {
  color: var(--gold);
}

/* Tab bar (mobile) */
.tabbar {
  display: none;
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 40;
  height: calc(var(--tabbar-h) + env(safe-area-inset-bottom, 0px));
  padding-bottom: env(safe-area-inset-bottom, 0px);
  background: rgba(11, 11, 12, 0.94);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-top: 1px solid var(--line);
}

.tabbar a {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.2rem;
  color: var(--text-muted);
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  min-width: 0;
}

.tabbar a svg {
  width: 22px;
  height: 22px;
  stroke: currentColor;
  fill: none;
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.tabbar a.is-active {
  color: var(--gold);
}

/* Helpers */
.hide-desktop { display: none; }

body.has-tabbar {
  padding-bottom: calc(var(--tabbar-h) + env(safe-area-inset-bottom, 0px));
}

/* Responsive */
@media (max-width: 900px) {
  .works-grid,
  .feature-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 800px) {
  :root { --header-h: 60px; }

  .wrap {
    width: calc(100% - 40px);
  }

  .logo {
    display: none;
  }

  .nav-desktop {
    display: none;
  }

  .menu-toggle {
    display: flex;
    margin-left: auto;
  }

  .site-header {
    background: var(--bg);
    backdrop-filter: none;
  }

  .hero {
    padding-top: 1.05rem;
  }

  .hero h1 {
    font-size: clamp(3.4rem, 16.5vw, 4.8rem);
  }

  .hero .lede {
    margin-top: 1.15rem;
  }

  .hero .cta {
    margin-top: 1.2rem;
  }

  .featured {
    padding: 1.65rem 0 2.2rem;
  }

  .feature-grid {
    grid-template-columns: 1fr;
    gap: 0.7rem;
  }

  .hide-desktop { display: inline-flex; }

  /* Mobile featured cards: text left, image right */
  .feature-grid .work-card {
    grid-template-areas: "body media";
    grid-template-columns: 1fr 42%;
    gap: 0.9rem 0.85rem;
    align-items: stretch;
    background: var(--bg-card);
    border: 1px solid var(--line);
    border-radius: 14px;
    padding: 0.72rem 0.8rem 0.72rem 0.95rem;
    min-height: 118px;
  }

  .feature-grid .work-card__media {
    aspect-ratio: auto;
    height: 100%;
    min-height: 108px;
    border-radius: 8px;
  }

  .feature-grid .work-card__body {
    padding: 0.15rem 0 0.1rem;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
  }

  .feature-grid .work-card__cat {
    display: inline-block;
    font-size: 0.7rem;
    letter-spacing: 0.08em;
    color: var(--gold);
    border: 1px solid color-mix(in srgb, var(--gold) 40%, transparent);
    border-radius: 999px;
    padding: 0.1rem 0.48rem;
    margin-bottom: 0.55rem;
  }

  .feature-grid .work-card h3 {
    font-size: 1.08rem;
    line-height: 1.35;
    font-weight: 500;
  }

  .feature-grid .work-card .work-card__sub {
    display: none;
  }

  .feature-grid .work-card__desc {
    display: block;
    margin-top: 0.4rem;
    font-size: 0.8rem;
    color: var(--text-muted);
    line-height: 1.55;
  }

  .feature-grid .work-card__go {
    display: inline-flex;
    margin-top: auto;
    padding-top: 0.7rem;
    font-size: 0.82rem;
  }

  .feature-grid .work-card:hover .work-card__media img {
    transform: none;
  }

  .collect-grid {
    grid-template-columns: 1fr;
    column-gap: 0;
    padding-bottom: 3rem;
  }

  .collect-empty {
    margin-bottom: 2.4rem;
  }

  .works-grid {
    grid-template-columns: 1fr;
    padding-bottom: 3rem;
  }

  .page-head {
    padding: 2rem 0 1.5rem;
  }

  .tabbar {
    display: flex;
  }

  main {
    min-height: calc(100vh - var(--header-h) - var(--tabbar-h) - 4.8rem);
  }

  .blog-list,
  .about,
  .article {
    padding-bottom: 3rem;
  }

  .site-footer {
    padding-bottom: 1.4rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    transition: none !important;
    animation: none !important;
  }
}