/* Code Library — visual theme: forest ink + warm brass + mist paper */
:root {
  --color-bg: #f2f4f1;
  --color-bg-deep: #e4eae5;
  --color-surface: #ffffff;
  --color-ink: #14221c;
  --color-ink-soft: #3d4f45;
  --color-muted: #6b7a72;
  --color-accent: #1b3a2f;
  --color-accent-hover: #0f2920;
  --color-brass: #b8943f;
  --color-brass-soft: #d4b56a;
  --color-line: #c8d2cb;
  --color-error: #8b2e2e;
  --color-success: #1b5c3a;
  --font-display: "Bai Jamjuree", "Sarabun", sans-serif;
  --font-body: "Sarabun", "Bai Jamjuree", sans-serif;
  --space-xs: 0.35rem;
  --space-sm: 0.75rem;
  --space-md: 1.25rem;
  --space-lg: 2.25rem;
  --space-xl: 4rem;
  --space-2xl: 6.5rem;
  --radius: 2px;
  --radius-lg: 6px;
  --shadow-soft: 0 12px 40px rgba(20, 34, 28, 0.08);
  --max-width: 1120px;
  --header-h: 4.25rem;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.7;
  color: var(--color-ink);
  background:
    radial-gradient(ellipse 80% 50% at 10% -10%, rgba(27, 58, 47, 0.07), transparent 55%),
    radial-gradient(ellipse 60% 40% at 100% 0%, rgba(184, 148, 63, 0.08), transparent 50%),
    linear-gradient(180deg, var(--color-bg) 0%, var(--color-bg-deep) 100%);
  min-height: 100vh;
}

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

a {
  color: var(--color-accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
  transition: color 0.2s var(--ease);
}

a:hover {
  color: var(--color-brass);
}

h1,
h2,
h3,
h4 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.25;
  color: var(--color-ink);
  margin: 0 0 var(--space-md);
}

h1 {
  font-size: clamp(2rem, 4.5vw, 3.25rem);
  letter-spacing: -0.02em;
}

h2 {
  font-size: clamp(1.5rem, 3vw, 2.15rem);
}

h3 {
  font-size: 1.25rem;
}

p {
  margin: 0 0 var(--space-md);
}

ul,
ol {
  margin: 0 0 var(--space-md);
  padding-left: 1.25rem;
}

.u-sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

.l-container {
  width: min(100% - 2rem, var(--max-width));
  margin-inline: auto;
}

.l-section {
  padding: var(--space-xl) 0;
}

.l-section--tight {
  padding: var(--space-lg) 0;
}

.l-section__eyebrow {
  font-family: var(--font-display);
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-brass);
  margin-bottom: var(--space-sm);
}

/* Header */
.c-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-h);
  background: rgba(242, 244, 241, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-line);
}

.c-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  gap: var(--space-md);
}

.c-header__brand {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--color-accent);
  text-decoration: none;
  letter-spacing: -0.01em;
}

.c-header__brand span {
  color: var(--color-brass);
}

.c-header__toggle {
  display: none;
  background: none;
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  padding: 0.45rem 0.65rem;
  cursor: pointer;
  font-family: var(--font-display);
  font-size: 0.875rem;
  color: var(--color-ink);
}

.c-nav {
  display: flex;
  align-items: center;
  gap: 0.15rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.c-nav a {
  display: block;
  padding: 0.4rem 0.65rem;
  text-decoration: none;
  color: var(--color-ink-soft);
  font-size: 0.9375rem;
  font-weight: 500;
  position: relative;
}

.c-nav a::after {
  content: "";
  position: absolute;
  left: 0.65rem;
  right: 0.65rem;
  bottom: 0.2rem;
  height: 2px;
  background: var(--color-brass);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s var(--ease);
}

.c-nav a:hover,
.c-nav a[aria-current="page"] {
  color: var(--color-accent);
}

.c-nav a:hover::after,
.c-nav a[aria-current="page"]::after {
  transform: scaleX(1);
}

@media (max-width: 900px) {
  .c-header__toggle {
    display: inline-flex;
    align-items: center;
  }

  .c-nav {
    display: none;
    position: absolute;
    top: var(--header-h);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-line);
    padding: var(--space-sm);
    box-shadow: var(--shadow-soft);
  }

  .c-nav.is-open {
    display: flex;
    animation: slideDown 0.35s var(--ease);
  }

  .c-nav a {
    padding: 0.75rem 1rem;
  }
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Buttons */
.c-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.9375rem;
  padding: 0.75rem 1.35rem;
  border-radius: var(--radius);
  border: 2px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition:
    background 0.25s var(--ease),
    color 0.25s var(--ease),
    border-color 0.25s var(--ease),
    transform 0.25s var(--ease);
}

.c-btn:hover {
  text-decoration: none;
  transform: translateY(-1px);
}

.c-btn--primary {
  background: var(--color-accent);
  color: #f5f8f6;
}

.c-btn--primary:hover {
  background: var(--color-accent-hover);
  color: #fff;
}

.c-btn--ghost {
  background: transparent;
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.c-btn--ghost:hover {
  background: var(--color-accent);
  color: #fff;
}

.c-btn--brass {
  background: var(--color-brass);
  color: #1a1508;
}

.c-btn--brass:hover {
  background: var(--color-brass-soft);
  color: #1a1508;
}

/* Hero variants */
.c-hero {
  position: relative;
  min-height: calc(100vh - var(--header-h));
  display: grid;
  align-items: end;
  overflow: hidden;
}

.c-hero__media {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.c-hero__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.c-hero__media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    rgba(20, 34, 28, 0.25) 0%,
    rgba(20, 34, 28, 0.78) 70%,
    rgba(20, 34, 28, 0.92) 100%
  );
}

.c-hero__content {
  position: relative;
  z-index: 1;
  padding: var(--space-2xl) 0 var(--space-xl);
  color: #f5f8f6;
  max-width: 38rem;
  animation: riseIn 0.9s var(--ease) both;
}

.c-hero__content h1 {
  color: #f5f8f6;
  margin-bottom: var(--space-sm);
}

.c-hero__content p {
  color: rgba(245, 248, 246, 0.88);
  font-size: 1.125rem;
  max-width: 32rem;
}

.c-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-top: var(--space-lg);
}

.c-hero--split {
  min-height: auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: stretch;
  background: var(--color-accent);
}

.c-hero--split .c-hero__content {
  padding: var(--space-2xl) var(--space-lg);
  max-width: none;
}

.c-hero--split .c-hero__media {
  position: relative;
}

.c-hero--split .c-hero__media::after {
  background: linear-gradient(90deg, rgba(27, 58, 47, 0.55), transparent 40%);
}

@media (max-width: 800px) {
  .c-hero--split {
    grid-template-columns: 1fr;
  }

  .c-hero--split .c-hero__media {
    min-height: 240px;
  }
}

@keyframes riseIn {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Reveal on scroll */
.js-reveal {
  opacity: 0;
  transform: translateY(18px);
  transition:
    opacity 0.7s var(--ease),
    transform 0.7s var(--ease);
}

.js-reveal.is-visible {
  opacity: 1;
  transform: none;
}

/* Offer preview */
.c-offer-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}

@media (max-width: 800px) {
  .c-offer-grid {
    grid-template-columns: 1fr;
  }
}

.c-offer {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition:
    box-shadow 0.35s var(--ease),
    transform 0.35s var(--ease);
}

.c-offer:hover {
  box-shadow: var(--shadow-soft);
  transform: translateY(-3px);
}

.c-offer__img {
  aspect-ratio: 16 / 10;
  overflow: hidden;
}

.c-offer__img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease);
}

.c-offer:hover .c-offer__img img {
  transform: scale(1.04);
}

.c-offer__body {
  padding: var(--space-md);
}

.c-offer__body h3 {
  margin-bottom: var(--space-xs);
}

.c-offer__body h3 a {
  text-decoration: none;
  color: inherit;
}

.c-offer__body h3 a:hover {
  color: var(--color-brass);
}

.c-offer__meta {
  font-size: 0.875rem;
  color: var(--color-muted);
  margin-bottom: var(--space-sm);
}

/* Page header (inner) */
.c-page-head {
  padding: var(--space-xl) 0 var(--space-lg);
  border-bottom: 1px solid var(--color-line);
  margin-bottom: var(--space-lg);
}

.c-page-head p {
  max-width: 40rem;
  color: var(--color-ink-soft);
  font-size: 1.125rem;
}

/* Prose */
.c-prose {
  max-width: 42rem;
}

.c-prose h2 {
  margin-top: var(--space-xl);
}

.c-prose table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--space-md) 0;
  font-size: 0.9375rem;
}

.c-prose th,
.c-prose td {
  border: 1px solid var(--color-line);
  padding: 0.65rem 0.75rem;
  text-align: left;
  vertical-align: top;
}

.c-prose th {
  background: var(--color-bg-deep);
  font-family: var(--font-display);
  font-weight: 600;
}

/* Pricing table */
.c-rate-list {
  display: grid;
  gap: var(--space-md);
}

.c-rate {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: var(--space-md);
  align-items: start;
  padding: var(--space-md) var(--space-lg);
  background: var(--color-surface);
  border-left: 3px solid var(--color-brass);
  border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
}

.c-rate__price {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--color-accent);
  white-space: nowrap;
}

@media (max-width: 600px) {
  .c-rate {
    grid-template-columns: 1fr;
  }
}

/* Reviews */
.c-quote {
  background: var(--color-surface);
  padding: var(--space-lg);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-line);
  margin-bottom: var(--space-md);
}

.c-quote blockquote {
  margin: 0 0 var(--space-md);
  font-size: 1.0625rem;
  color: var(--color-ink-soft);
}

.c-quote footer {
  font-family: var(--font-display);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-accent);
}

.c-quote footer span {
  display: block;
  font-weight: 400;
  color: var(--color-muted);
  margin-top: 0.15rem;
}

.c-story {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: var(--space-lg);
  margin-top: var(--space-xl);
  align-items: center;
}

@media (max-width: 700px) {
  .c-story {
    grid-template-columns: 1fr;
  }
}

.c-story__img {
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 4 / 3;
}

.c-story__img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Blog */
.c-post-list {
  display: grid;
  gap: var(--space-lg);
}

.c-post-card {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: var(--space-lg);
  align-items: center;
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid var(--color-line);
}

.c-post-card__img {
  aspect-ratio: 4 / 3;
  overflow: hidden;
  border-radius: var(--radius);
}

.c-post-card__img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.c-post-card time {
  font-size: 0.8125rem;
  color: var(--color-muted);
}

@media (max-width: 650px) {
  .c-post-card {
    grid-template-columns: 1fr;
  }
}

/* Forms */
.c-form {
  display: grid;
  gap: var(--space-md);
  max-width: 36rem;
}

.c-form__group {
  display: grid;
  gap: 0.35rem;
}

.c-form label {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.9375rem;
}

.c-form input,
.c-form select,
.c-form textarea {
  font-family: var(--font-body);
  font-size: 1rem;
  padding: 0.7rem 0.85rem;
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  background: var(--color-surface);
  color: var(--color-ink);
  transition: border-color 0.2s;
}

.c-form input:focus,
.c-form select:focus,
.c-form textarea:focus {
  outline: 2px solid var(--color-brass);
  outline-offset: 1px;
  border-color: var(--color-brass);
}

.c-form textarea {
  min-height: 140px;
  resize: vertical;
}

.c-form__error {
  color: var(--color-error);
  font-size: 0.875rem;
  display: none;
}

.c-form__group.is-invalid .c-form__error {
  display: block;
}

.c-form__group.is-invalid input,
.c-form__group.is-invalid select,
.c-form__group.is-invalid textarea {
  border-color: var(--color-error);
}

.c-form__status {
  padding: var(--space-md);
  border-radius: var(--radius);
  display: none;
}

.c-form__status.is-success {
  display: block;
  background: #e4f2ea;
  color: var(--color-success);
  border: 1px solid #a8d4b8;
}

.c-form__status.is-error {
  display: block;
  background: #f8eaea;
  color: var(--color-error);
  border: 1px solid #e0b0b0;
}

.c-contact-aside {
  background: var(--color-accent);
  color: #e8f0ec;
  padding: var(--space-lg);
  border-radius: var(--radius-lg);
}

.c-contact-aside h2 {
  color: #e8f0ec;
}

.c-contact-aside a {
  color: var(--color-brass-soft);
}

.c-contact-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: var(--space-xl);
  align-items: start;
}

@media (max-width: 800px) {
  .c-contact-grid {
    grid-template-columns: 1fr;
  }
}

/* Footer */
.c-footer {
  margin-top: var(--space-2xl);
  background: var(--color-accent);
  color: #d5e0d9;
  padding: var(--space-xl) 0 var(--space-lg);
}

.c-footer a {
  color: #e8f0ec;
  text-decoration: none;
}

.c-footer a:hover {
  color: var(--color-brass-soft);
}

.c-footer__grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: var(--space-lg);
  margin-bottom: var(--space-lg);
}

.c-footer__brand {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.25rem;
  color: #fff;
  margin-bottom: var(--space-sm);
}

.c-footer h3 {
  color: var(--color-brass-soft);
  font-size: 0.875rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: var(--space-sm);
}

.c-footer ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.c-footer li {
  margin-bottom: 0.4rem;
}

.c-footer__bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding-top: var(--space-md);
  font-size: 0.875rem;
  color: rgba(213, 224, 217, 0.75);
}

@media (max-width: 700px) {
  .c-footer__grid {
    grid-template-columns: 1fr;
  }
}

/* Cookie banner */
.c-cookie {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 200;
  background: var(--color-ink);
  color: #e8f0ec;
  padding: var(--space-md);
  transform: translateY(110%);
  transition: transform 0.45s var(--ease);
  box-shadow: 0 -8px 32px rgba(0, 0, 0, 0.2);
}

.c-cookie.is-visible {
  transform: translateY(0);
}

.c-cookie__inner {
  width: min(100% - 1rem, var(--max-width));
  margin-inline: auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
}

.c-cookie p {
  margin: 0;
  flex: 1 1 280px;
  font-size: 0.9375rem;
}

.c-cookie a {
  color: var(--color-brass-soft);
}

.c-cookie__actions {
  display: flex;
  gap: var(--space-sm);
  flex-shrink: 0;
}

/* Standards / custom page */
.c-steps {
  counter-reset: step;
  display: grid;
  gap: var(--space-md);
}

.c-step {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-md);
  align-items: start;
  padding: var(--space-md);
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
}

.c-step::before {
  counter-increment: step;
  content: counter(step, decimal-leading-zero);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.5rem;
  color: var(--color-brass);
  line-height: 1;
}

/* Service detail */
.c-service-hero {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: var(--space-xl);
  align-items: center;
  margin-bottom: var(--space-xl);
}

.c-service-hero__img {
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 4 / 3;
}

.c-service-hero__img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

@media (max-width: 800px) {
  .c-service-hero {
    grid-template-columns: 1fr;
  }
}

.c-detail-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
  margin: var(--space-lg) 0;
}

.c-detail-block {
  padding: var(--space-md);
  background: var(--color-surface);
  border-top: 2px solid var(--color-accent);
}

.c-detail-block h3 {
  font-size: 1rem;
  margin-bottom: var(--space-xs);
}

@media (max-width: 600px) {
  .c-detail-grid {
    grid-template-columns: 1fr;
  }
}

/* Team */
.c-team {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}

.c-team__member {
  text-align: left;
}

.c-team__photo {
  aspect-ratio: 3 / 4;
  overflow: hidden;
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-sm);
}

.c-team__photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

@media (max-width: 700px) {
  .c-team {
    grid-template-columns: 1fr;
  }
}

/* 404 */
.c-404 {
  min-height: 60vh;
  display: grid;
  place-content: center;
  text-align: center;
  padding: var(--space-xl);
}

.c-404__code {
  font-family: var(--font-display);
  font-size: clamp(4rem, 12vw, 8rem);
  font-weight: 700;
  color: var(--color-accent);
  line-height: 1;
  opacity: 0.25;
}

/* Band CTA */
.c-band {
  background: var(--color-accent);
  color: #e8f0ec;
  padding: var(--space-xl) 0;
  margin-top: var(--space-xl);
}

.c-band h2 {
  color: #fff;
}

.c-band p {
  color: rgba(232, 240, 236, 0.85);
  max-width: 36rem;
}

/* Evidence strip — qualitative, not metric */
.c-evidence {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
  margin: var(--space-lg) 0;
}

.c-evidence__item {
  padding: var(--space-md);
  border-top: 2px solid var(--color-brass);
}

.c-evidence__item strong {
  display: block;
  font-family: var(--font-display);
  font-size: 1.05rem;
  margin-bottom: 0.35rem;
}

@media (max-width: 700px) {
  .c-evidence {
    grid-template-columns: 1fr;
  }
}

/* Home narrative blocks */
.c-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  align-items: center;
}

.c-split--reverse .c-split__media {
  order: 2;
}

@media (max-width: 800px) {
  .c-split,
  .c-split--reverse .c-split__media {
    grid-template-columns: 1fr;
  }

  .c-split--reverse .c-split__media {
    order: 0;
  }
}

.c-split__media {
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 5 / 4;
}

.c-split__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}