/* ==========================================================================
   Lyfta LLC — Interior Design & Visualization
   Design tokens + global styles
   ========================================================================== */

:root {
  --color-bg: #f7f4ef;
  --color-bg-alt: #f1ece3;
  --color-ink: #2c2824;
  --color-ink-soft: #55504a;
  --color-taupe: #8a7f6d;
  --color-line: #ddd5c8;
  --color-line-strong: #c9beac;
  --color-dark: #37332e;
  --color-dark-soft: #4a453e;
  --color-cream: #fbf9f5;
  --color-white: #ffffff;

  --font-serif-jp: "Noto Serif JP", "Shippori Mincho", serif;
  --font-sans-jp: "Noto Sans JP", "Hiragino Kaku Gothic ProN", sans-serif;
  --font-serif-en: "Cormorant Garamond", "EB Garamond", serif;

  --container: 1240px;
  --gutter: clamp(20px, 5vw, 80px);
  --section-y: clamp(64px, 10vw, 128px);

  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-ink);
  font-family: var(--font-sans-jp);
  font-size: 15px;
  line-height: 1.9;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; margin: 0; padding: 0; }
button { font-family: inherit; }

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

/* ---------- Typography helpers ---------- */

.eyebrow {
  display: block;
  font-family: var(--font-serif-en);
  font-size: 13px;
  letter-spacing: 0.28em;
  color: var(--color-taupe);
  text-transform: uppercase;
  margin-bottom: 18px;
}

.heading-lg {
  font-family: var(--font-serif-jp);
  font-weight: 500;
  font-size: clamp(24px, 2.6vw, 32px);
  line-height: 1.7;
  letter-spacing: 0.02em;
  margin: 0 0 20px;
}

.heading-md {
  font-family: var(--font-serif-jp);
  font-weight: 500;
  font-size: clamp(22px, 2.4vw, 28px);
  line-height: 1.6;
  margin: 0 0 16px;
}

.body-text {
  color: var(--color-ink-soft);
  font-size: 15px;
  line-height: 2;
}

.section-head {
  margin-bottom: clamp(36px, 5vw, 56px);
}

.section-head--row {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}

.text-link {
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--color-ink);
  border-bottom: 1px solid var(--color-ink);
  padding-bottom: 4px;
  white-space: nowrap;
  transition: opacity 0.25s var(--ease);
}
.text-link:hover { opacity: 0.55; }

/* ---------- Buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 16px 38px;
  font-size: 13px;
  letter-spacing: 0.16em;
  border: 1px solid currentColor;
  background: transparent;
  cursor: pointer;
  transition: background 0.3s var(--ease), color 0.3s var(--ease);
}

.btn--dark {
  color: var(--color-dark);
  border-color: var(--color-dark);
}
.btn--dark:hover { background: var(--color-dark); color: var(--color-cream); }

.btn--light {
  color: var(--color-white);
  border-color: rgba(255,255,255,0.75);
}
.btn--light:hover { background: var(--color-white); color: var(--color-dark); }

.btn--block { width: 100%; }

/* ==========================================================================
   Header
   ========================================================================== */

.site-header {
  position: sticky;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(247, 244, 239, 0.92);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s var(--ease), background 0.3s var(--ease);
}

.site-header.is-scrolled {
  border-bottom-color: var(--color-line);
}

.site-header--transparent {
  background: transparent;
  border-bottom-color: transparent;
}
.site-header--transparent:not(.is-scrolled) {
  color: #fff;
}
.site-header--transparent:not(.is-scrolled) .logo__sub,
.site-header--transparent:not(.is-scrolled) .main-nav a,
.site-header--transparent:not(.is-scrolled) .header-cta {
  color: #fff;
  border-color: rgba(255,255,255,0.75);
}
.site-header--transparent.is-scrolled {
  background: rgba(247, 244, 239, 0.94);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px var(--gutter);
  max-width: var(--container);
  margin: 0 auto;
}

.logo {
  display: flex;
  flex-direction: column;
  gap: 2px;
  line-height: 1;
}
.logo__main {
  font-family: var(--font-serif-en);
  font-size: 26px;
  letter-spacing: 0.04em;
  font-weight: 600;
}
.logo__sub {
  font-size: 9px;
  letter-spacing: 0.22em;
  color: var(--color-taupe);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 40px;
}
.main-nav ul {
  display: flex;
  gap: 34px;
}
.main-nav a {
  font-size: 12px;
  letter-spacing: 0.14em;
  padding-bottom: 4px;
  border-bottom: 1px solid transparent;
  transition: border-color 0.25s var(--ease), opacity 0.25s var(--ease);
}
.main-nav a:hover,
.main-nav a[aria-current="page"] {
  border-bottom-color: currentColor;
}

.header-cta {
  font-size: 11px;
  letter-spacing: 0.14em;
  border: 1px solid var(--color-ink);
  padding: 11px 22px;
  transition: background 0.25s var(--ease), color 0.25s var(--ease);
}
.header-cta:hover { background: var(--color-ink); color: var(--color-cream); }

.nav-toggle {
  display: none;
  width: 26px;
  height: 18px;
  position: relative;
  background: none;
  border: none;
  cursor: pointer;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after {
  content: "";
  position: absolute;
  left: 0;
  width: 100%;
  height: 1px;
  background: currentColor;
  transition: transform 0.3s var(--ease), opacity 0.3s var(--ease);
}
.nav-toggle span { top: 8px; }
.nav-toggle span::before { top: -8px; }
.nav-toggle span::after { top: 8px; }
.nav-toggle[aria-expanded="true"] span { background: transparent; }
.nav-toggle[aria-expanded="true"] span::before { transform: translateY(8px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span::after { transform: translateY(-8px) rotate(-45deg); }

.mobile-nav {
  position: fixed;
  inset: 0;
  top: 0;
  background: var(--color-bg);
  z-index: 90;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 40px var(--gutter);
  transform: translateY(-100%);
  transition: transform 0.4s var(--ease);
}
.mobile-nav.is-open { transform: translateY(0); }
.mobile-nav ul { display: flex; flex-direction: column; gap: 28px; }
.mobile-nav a {
  font-family: var(--font-serif-jp);
  font-size: 24px;
}
.mobile-nav .header-cta {
  display: inline-flex;
  margin-top: 36px;
  align-self: flex-start;
}

/* ==========================================================================
   Hero
   ========================================================================== */

.hero {
  position: relative;
  height: 92vh;
  min-height: 560px;
  max-height: 900px;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
  color: #fff;
}
.hero__media {
  position: absolute;
  inset: 0;
}
.hero__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.hero__media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(30,26,22,0.15) 0%, rgba(30,26,22,0.05) 40%, rgba(30,26,22,0.55) 100%);
}
.hero__content {
  position: relative;
  z-index: 2;
  padding: 0 var(--gutter) clamp(48px, 8vw, 96px);
  max-width: var(--container);
  margin: 0 auto;
  width: 100%;
}
.hero__title {
  font-family: var(--font-serif-jp);
  font-weight: 500;
  font-size: clamp(30px, 5vw, 52px);
  line-height: 1.5;
  margin: 0 0 22px;
  letter-spacing: 0.02em;
}
.hero__subtitle {
  font-family: var(--font-serif-en);
  font-size: clamp(14px, 1.6vw, 18px);
  letter-spacing: 0.14em;
  margin: 0 0 34px;
  color: rgba(255,255,255,0.9);
}

/* Page hero (inner pages) — shorter banner */
.page-hero {
  position: relative;
  height: 46vh;
  min-height: 320px;
  max-height: 460px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  color: #fff;
  text-align: center;
}
.page-hero__media { position: absolute; inset: 0; }
.page-hero__media img { width: 100%; height: 100%; object-fit: cover; }
.page-hero__media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(30,26,22,0.42);
}
.page-hero__content { position: relative; z-index: 2; }
.page-hero__eyebrow {
  display: block;
  font-family: var(--font-serif-en);
  font-size: 13px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  margin-bottom: 16px;
  color: rgba(255,255,255,0.85);
}
.page-hero__title {
  font-family: var(--font-serif-jp);
  font-weight: 500;
  font-size: clamp(28px, 4vw, 42px);
  margin: 0;
}
.breadcrumb {
  margin-top: 22px;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: rgba(255,255,255,0.75);
  display: flex;
  gap: 8px;
  justify-content: center;
}
.breadcrumb a:hover { text-decoration: underline; }

/* ==========================================================================
   Sections
   ========================================================================== */

.section {
  padding: var(--section-y) 0;
}
.section--alt { background: var(--color-bg-alt); }
.section--dark {
  background: var(--color-dark);
  color: var(--color-cream);
}
.section--tight { padding: clamp(48px, 6vw, 72px) 0; }

/* Philosophy / split with image */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(32px, 6vw, 88px);
  align-items: center;
}
.split--reverse .split__media { order: 2; }
.split__media img {
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
}
.split__body p + p { margin-top: 18px; }

/* ---------- Works grid ---------- */

.works-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: clamp(20px, 2.4vw, 34px);
}
.work-card__media {
  overflow: hidden;
  aspect-ratio: 4 / 5;
}
.work-card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease);
}
.work-card:hover .work-card__media img { transform: scale(1.06); }
.work-card__title {
  margin-top: 18px;
  font-size: 15px;
  letter-spacing: 0.02em;
}
.work-card__meta {
  margin-top: 6px;
  font-size: 12px;
  color: var(--color-taupe);
  letter-spacing: 0.04em;
}
.work-card__tag {
  display: inline-block;
  margin-top: 12px;
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--color-taupe);
  border: 1px solid var(--color-line-strong);
  padding: 4px 10px;
}

/* ---------- Service grid ---------- */

.service-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: clamp(24px, 3vw, 40px);
}
.service-card {
  text-align: center;
  padding: 0 8px;
}
.service-card__icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 26px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-taupe);
}
.service-card__icon svg { width: 100%; height: 100%; }
.service-card__title {
  font-family: var(--font-serif-jp);
  font-size: 17px;
  margin-bottom: 14px;
}
.service-card__desc {
  font-size: 13.5px;
  color: var(--color-ink-soft);
  line-height: 1.9;
}

.service-detail-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: clamp(28px, 4vw, 48px);
}
.service-detail-card {
  background: var(--color-cream);
  border: 1px solid var(--color-line);
}
.service-detail-card__media {
  aspect-ratio: 16 / 11;
  overflow: hidden;
}
.service-detail-card__media img { width: 100%; height: 100%; object-fit: cover; }
.service-detail-card__body { padding: clamp(26px, 3vw, 36px); }
.service-detail-card__index {
  font-family: var(--font-serif-en);
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--color-taupe);
  margin-bottom: 14px;
  display: block;
}

/* ---------- Journal grid ---------- */

.journal-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: clamp(20px, 2.4vw, 34px);
}
.journal-card__media {
  overflow: hidden;
  aspect-ratio: 4 / 3;
}
.journal-card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease);
}
.journal-card:hover .journal-card__media img { transform: scale(1.06); }
.journal-card__date {
  margin-top: 16px;
  font-family: var(--font-serif-en);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--color-taupe);
}
.journal-card__cat {
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--color-taupe);
}
.journal-card__title {
  margin-top: 8px;
  font-size: 14.5px;
  line-height: 1.7;
}

/* ---------- CTA banner ---------- */

.cta-banner {
  background: var(--color-dark);
  color: var(--color-cream);
  padding: clamp(48px, 7vw, 76px) 0;
}
.cta-banner__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}
.cta-banner__title {
  font-family: var(--font-serif-jp);
  font-size: clamp(22px, 2.8vw, 30px);
  margin: 0 0 10px;
}
.cta-banner__sub {
  font-size: 13.5px;
  color: rgba(251,249,245,0.72);
  margin: 0;
}

/* ==========================================================================
   Footer
   ========================================================================== */

.site-footer {
  background: var(--color-dark);
  color: rgba(251,249,245,0.85);
  padding: clamp(56px, 7vw, 84px) 0 28px;
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 32px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(251,249,245,0.14);
}
.footer-logo .logo__main { color: var(--color-cream); }
.footer-logo .logo__sub { color: rgba(251,249,245,0.55); }
.footer-logo__desc {
  margin-top: 16px;
  font-size: 12.5px;
  color: rgba(251,249,245,0.55);
  max-width: 260px;
  line-height: 1.9;
}
.footer-nav {
  display: flex;
  gap: 60px;
  flex-wrap: wrap;
}
.footer-nav h4 {
  font-size: 11px;
  letter-spacing: 0.14em;
  color: rgba(251,249,245,0.5);
  margin: 0 0 18px;
  font-weight: 400;
}
.footer-nav ul { display: flex; flex-direction: column; gap: 12px; }
.footer-nav a { font-size: 13px; transition: opacity 0.25s var(--ease); }
.footer-nav a:hover { opacity: 0.6; }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  padding-top: 24px;
  font-size: 11.5px;
  color: rgba(251,249,245,0.5);
  letter-spacing: 0.04em;
}
.footer-bottom__nav { display: flex; gap: 22px; }
.footer-bottom__nav a:hover { opacity: 0.6; }

/* ==========================================================================
   Company table / profile
   ========================================================================== */

.profile-table {
  width: 100%;
  border-collapse: collapse;
}
.profile-table tr {
  border-top: 1px solid var(--color-line);
}
.profile-table tr:last-child { border-bottom: 1px solid var(--color-line); }
.profile-table th,
.profile-table td {
  text-align: left;
  padding: 20px 0;
  font-weight: 400;
  vertical-align: top;
}
.profile-table th {
  width: 200px;
  color: var(--color-taupe);
  font-size: 12.5px;
  letter-spacing: 0.08em;
}
.profile-table td { font-size: 14.5px; color: var(--color-ink-soft); }

/* ==========================================================================
   Process steps (service page)
   ========================================================================== */

.process-list {
  display: grid;
  gap: 0;
}
.process-item {
  display: grid;
  grid-template-columns: 90px 1fr;
  gap: 28px;
  padding: 34px 0;
  border-top: 1px solid var(--color-line);
}
.process-list .process-item:last-child { border-bottom: 1px solid var(--color-line); }
.process-item__num {
  font-family: var(--font-serif-en);
  font-size: 26px;
  color: var(--color-line-strong);
}
.process-item__title {
  font-size: 16px;
  margin: 0 0 10px;
  letter-spacing: 0.02em;
}
.process-item__desc {
  font-size: 13.5px;
  color: var(--color-ink-soft);
  max-width: 640px;
}

/* ==========================================================================
   Works filter (works listing page)
   ========================================================================== */

.filter-bar {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: clamp(36px, 5vw, 52px);
}
.filter-chip {
  font-size: 12px;
  letter-spacing: 0.08em;
  padding: 9px 18px;
  border: 1px solid var(--color-line-strong);
  color: var(--color-ink-soft);
  background: transparent;
  cursor: pointer;
  transition: background 0.25s var(--ease), color 0.25s var(--ease), border-color 0.25s var(--ease);
}
.filter-chip.is-active,
.filter-chip:hover {
  background: var(--color-dark);
  border-color: var(--color-dark);
  color: var(--color-cream);
}

/* ==========================================================================
   Work / Journal detail
   ========================================================================== */

.detail-meta {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  padding: 32px 0;
  border-top: 1px solid var(--color-line);
  border-bottom: 1px solid var(--color-line);
  margin: 0 0 var(--section-y);
}
.detail-meta__item .label {
  display: block;
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--color-taupe);
  margin-bottom: 8px;
}
.detail-meta__item .value { font-size: 14.5px; }

.detail-gallery {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: clamp(16px, 2vw, 24px);
  margin-top: clamp(40px, 6vw, 64px);
}
.detail-gallery img { width: 100%; aspect-ratio: 4/3; object-fit: cover; }

.article-body {
  max-width: 760px;
  margin: 0 auto;
  font-size: 15.5px;
  line-height: 2.05;
  color: var(--color-ink-soft);
}
.article-body h2 {
  font-family: var(--font-serif-jp);
  color: var(--color-ink);
  font-size: 22px;
  margin: 48px 0 20px;
}
.article-body p + p { margin-top: 24px; }
.article-body img { width: 100%; margin: 40px 0; aspect-ratio: 3/2; object-fit: cover; }
.article-meta {
  max-width: 760px;
  margin: 0 auto 40px;
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 12.5px;
  color: var(--color-taupe);
  letter-spacing: 0.06em;
}
.article-meta__dot { width: 3px; height: 3px; background: var(--color-taupe); border-radius: 50%; }

.prevnext {
  display: flex;
  justify-content: space-between;
  border-top: 1px solid var(--color-line);
  margin-top: clamp(48px, 6vw, 72px);
  padding-top: clamp(24px, 3vw, 32px);
}
.prevnext a { font-size: 13px; letter-spacing: 0.06em; }
.prevnext a:hover { opacity: 0.6; }

/* ==========================================================================
   Contact form
   ========================================================================== */

.contact-layout {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: clamp(40px, 6vw, 80px);
}
.contact-info__block + .contact-info__block { margin-top: 40px; }
.contact-info__label {
  font-size: 11.5px;
  letter-spacing: 0.12em;
  color: var(--color-taupe);
  margin-bottom: 10px;
}
.contact-info__value { font-size: 15px; line-height: 1.9; }

.form-row { margin-bottom: 26px; }
.form-row--split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.form-row label {
  display: block;
  font-size: 12.5px;
  letter-spacing: 0.06em;
  margin-bottom: 10px;
  color: var(--color-ink-soft);
}
.form-row label .req {
  color: #a8654f;
  margin-left: 6px;
  font-size: 11px;
}
.form-row input,
.form-row textarea,
.form-row select {
  width: 100%;
  border: 1px solid var(--color-line-strong);
  background: var(--color-cream);
  padding: 14px 16px;
  font-size: 14px;
  font-family: inherit;
  color: var(--color-ink);
  transition: border-color 0.25s var(--ease);
}
.form-row input:focus,
.form-row textarea:focus,
.form-row select:focus {
  outline: none;
  border-color: var(--color-ink);
}
.form-row textarea { resize: vertical; min-height: 160px; }
.form-note {
  font-size: 12px;
  color: var(--color-taupe);
  margin-top: 14px;
}

/* ==========================================================================
   Misc utility
   ========================================================================== */

.mt-0 { margin-top: 0; }
.center { text-align: center; }

/* ==========================================================================
   Responsive
   ========================================================================== */

@media (max-width: 1080px) {
  .works-grid { grid-template-columns: repeat(2, 1fr); }
  .service-grid { grid-template-columns: repeat(2, 1fr); }
  .journal-grid { grid-template-columns: repeat(2, 1fr); }
  .service-detail-grid { grid-template-columns: 1fr; }
  .detail-meta { grid-template-columns: repeat(2, 1fr); }
  .contact-layout { grid-template-columns: 1fr; }
}

@media (max-width: 860px) {
  .main-nav ul,
  .header-cta { display: none; }
  .nav-toggle { display: block; }

  .split { grid-template-columns: 1fr; }
  .split--reverse .split__media { order: 0; }

  .footer-inner { flex-direction: column; }
}

@media (max-width: 640px) {
  .works-grid,
  .service-grid,
  .journal-grid { grid-template-columns: 1fr; }
  .detail-meta { grid-template-columns: repeat(2, 1fr); }
  .detail-gallery { grid-template-columns: 1fr; }
  .form-row--split { grid-template-columns: 1fr; }
  .cta-banner__inner { flex-direction: column; align-items: flex-start; }
  .process-item { grid-template-columns: 1fr; gap: 10px; }
}