/* ============================================================
   COMPONENTS — ปุ่ม / การ์ด / ตาราง / เมนู / ตัวสลับภาษา / ฟอร์ม / modal
   ============================================================ */

/* ---------- Container ---------- */
.container {
  width: 100%; max-width: var(--container);
  margin-inline: auto; padding-inline: var(--gutter);
}

/* ---------- Skip link ---------- */
.skip-link {
  position: fixed; top: -100px; left: var(--sp-2); z-index: 999;
  background: var(--c-navy); color: #fff; padding: 12px 20px;
  border-radius: var(--radius); font-size: var(--fs-small);
  transition: top var(--dur-1) var(--ease);
}
.skip-link:focus { top: var(--sp-2); }

/* ---------- Scroll progress ---------- */
.scroll-progress {
  position: fixed; inset: 0 0 auto 0; height: 2px; z-index: 800;
  background: transparent; pointer-events: none;
}
.scroll-progress span { display: block; height: 100%; width: 0%; background: var(--c-accent); }

/* ---------- ปุ่ม ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 10px; padding: 16px 32px; border-radius: var(--radius);
  font-size: .9375rem; font-weight: 500; letter-spacing: .02em;
  border: 1px solid transparent; cursor: pointer;
  transition: background var(--dur-1) var(--ease), color var(--dur-1) var(--ease),
              border-color var(--dur-1) var(--ease);
}
.btn--sm { padding: 11px 22px; font-size: .875rem; }
.btn--primary { background: var(--c-navy); color: #fff; }
.btn--primary:hover { background: var(--c-navy-soft); }
.btn--outline { border-color: var(--c-graphite); color: var(--c-graphite); background: transparent; }
.btn--outline:hover { background: var(--c-graphite); color: #fff; }
.btn--ghost { border-color: rgba(255,255,255,.55); color: #fff; background: transparent; }
.btn--ghost:hover { background: #fff; color: var(--c-navy); border-color: #fff; }

/* Tertiary: text link + เส้นใต้วิ่งซ้าย→ขวา */
.link-underline {
  position: relative; display: inline-block;
  font-size: .9375rem; font-weight: 500; color: var(--c-navy); padding-bottom: 4px;
}
.link-underline::after {
  content: ''; position: absolute; left: 0; bottom: 0; height: 1px; width: 100%;
  background: var(--c-accent); transform: scaleX(0); transform-origin: left;
  transition: transform var(--dur-2) var(--ease);
}
.link-underline:hover::after { transform: scaleX(1); }

/* ---------- Top utility bar ---------- */
.topbar { background: var(--c-black); color: rgba(255,255,255,.7); font-size: .8125rem; }
.topbar__inner { display: flex; align-items: center; justify-content: space-between; min-height: 38px; }
.topbar__contact { display: flex; align-items: center; gap: var(--sp-2); }
.topbar__contact li { display: flex; align-items: center; gap: 8px; }
.topbar__contact a:hover { color: var(--c-accent); }
.topbar__sep { width: 1px; height: 12px; background: rgba(255,255,255,.2); }
.topbar .ico { width: 15px; height: 15px; fill: none; stroke: currentColor; stroke-width: 1.5; }
.topbar__note { letter-spacing: .08em; }
@media (max-width: 768px) { .topbar { display: none; } }

/* ---------- Header ---------- */
.header {
  position: sticky; top: 0; z-index: var(--z-header);
  background: rgba(255,255,255,0); border-bottom: 1px solid transparent;
  transition: background var(--dur-2) var(--ease), border-color var(--dur-2) var(--ease);
}
.header.is-scrolled,
.header.is-solid {
  background: var(--c-white); border-bottom-color: var(--line-color); box-shadow: var(--shadow-1);
}
.header__inner {
  display: flex; align-items: center; justify-content: space-between;
  gap: var(--sp-3); min-height: var(--header-h);
}

/* โลโก้ */
.logo { display: inline-flex; align-items: center; gap: 12px; }
.logo__mark { width: 34px; height: 34px; fill: none; stroke: var(--c-navy); stroke-width: 1.5; }
.logo__text { display: flex; flex-direction: column; line-height: 1.1; }
.logo__text strong { font-size: 1.25rem; font-weight: 600; letter-spacing: .06em; color: var(--c-navy); }
.logo__text em { font-style: normal; font-size: .625rem; letter-spacing: .14em; text-transform: uppercase; color: var(--c-grey-500); }
html[lang="th"] .logo__text em, html[lang="zh"] .logo__text em { text-transform: none; letter-spacing: .04em; font-size: .6875rem; }
.logo--light .logo__mark { stroke: #fff; }
.logo--light .logo__text strong { color: #fff; }
.logo--light .logo__text em { color: rgba(255,255,255,.6); }

/* โลโก้บน hero โปร่งใส: ใช้สีขาวจนกว่าจะ scroll */
.header:not(.is-scrolled):not(.is-solid) .logo__mark { stroke: #fff; }
.header:not(.is-scrolled):not(.is-solid) .logo__text strong { color: #fff; }
.header:not(.is-scrolled):not(.is-solid) .logo__text em { color: rgba(255,255,255,.65); }
.header:not(.is-scrolled):not(.is-solid) .nav__list a { color: #fff; }
.header:not(.is-scrolled):not(.is-solid) .lang__btn { background: transparent; color: #fff; border-color: rgba(255,255,255,.35); }
.header:not(.is-scrolled):not(.is-solid) .burger span { background: #fff; }

/* เมนูหลัก */
.nav__list { display: flex; align-items: center; gap: var(--sp-4); }
.nav__list a { position: relative; font-size: .9375rem; color: var(--c-graphite); padding: 6px 2px; }
.nav__list a::after {
  content: ''; position: absolute; left: 0; bottom: 0; height: 1px; width: 100%;
  background: var(--c-accent); transform: scaleX(0); transform-origin: left;
  transition: transform var(--dur-2) var(--ease);
}
.nav__list a:hover::after, .nav__list a.is-current::after { transform: scaleX(1); }

.header__actions { display: flex; align-items: center; gap: var(--sp-2); }
@media (max-width: 1200px) { .nav__list { gap: var(--sp-3); } }
@media (max-width: 992px) { .nav, .header__quote { display: none; } }

/* ---------- Language switcher ---------- */
.lang { position: relative; }
.lang__btn {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 9px 12px; border: var(--line); border-radius: var(--radius);
  font-size: .8125rem; letter-spacing: .1em; color: var(--c-graphite);
  background: var(--c-white);
  transition: border-color var(--dur-1) var(--ease), color var(--dur-1) var(--ease);
}
.lang__btn:hover { border-color: var(--c-accent); }
.lang__chev { width: 12px; height: 12px; fill: none; stroke: currentColor; stroke-width: 1.5; transition: transform var(--dur-1) var(--ease); }
.lang__btn[aria-expanded="true"] .lang__chev { transform: rotate(180deg); }

.lang__menu {
  position: absolute; top: calc(100% + 8px); right: 0; min-width: 168px;
  background: var(--c-white); border: var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow-2); padding: 6px 0;
  opacity: 0; visibility: hidden; transform: translateY(6px); pointer-events: none;
  transition: opacity var(--dur-1) var(--ease), transform var(--dur-1) var(--ease), visibility var(--dur-1);
}
.lang.is-open .lang__menu { opacity: 1; visibility: visible; transform: translateY(0); pointer-events: auto; }
.lang__menu li {
  padding: 11px 18px; font-size: .9375rem; color: var(--c-graphite); cursor: pointer;
  transition: background var(--dur-1) var(--ease);
}
.lang__menu li + li { border-top: var(--line); }
.lang__menu li:hover { background: var(--c-off-white); }
.lang__menu li[aria-selected="true"] {
  color: var(--c-navy); font-weight: 500;
  box-shadow: inset 0 -1px 0 var(--c-accent);
}

/* ---------- Hamburger ---------- */
.burger { display: none; width: 44px; height: 44px; padding: 10px; }
.burger span {
  display: block; height: 1.5px; background: var(--c-graphite); border-radius: 2px;
  transition: transform var(--dur-1) var(--ease), opacity var(--dur-1) var(--ease), background var(--dur-1) var(--ease);
}
.burger span + span { margin-top: 6px; }
.burger[aria-expanded="true"] span { background: var(--c-graphite) !important; }
.burger[aria-expanded="true"] span:nth-child(1) { transform: translateY(7.5px) rotate(45deg); }
.burger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.burger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7.5px) rotate(-45deg); }
@media (max-width: 992px) { .burger { display: block; } }

/* ---------- Mobile full-screen menu ---------- */
.mobile-menu {
  position: fixed; inset: 0; z-index: var(--z-menu);
  background: var(--c-white);
  transform: translateY(100%); visibility: hidden; pointer-events: none;
  transition: transform var(--dur-3) var(--ease), visibility var(--dur-3);
  overflow-y: auto;
}
.mobile-menu.is-open { transform: translateY(0); visibility: visible; pointer-events: auto; }
.mobile-menu__inner {
  min-height: 100%; display: flex; flex-direction: column; justify-content: center;
  gap: var(--sp-4); padding: 96px var(--gutter) var(--sp-5);
}
.mobile-menu__list li + li { border-top: var(--line); }
.mobile-menu__list a {
  display: block; padding: 18px 0;
  font-family: var(--font-display); font-size: 1.75rem; color: var(--c-black);
}
.mobile-menu__cta { align-self: flex-start; }
.mobile-lang { display: flex; gap: var(--sp-2); border-top: var(--line); padding-top: var(--sp-3); }
.mobile-lang button { padding: 8px 14px; border: var(--line); border-radius: var(--radius); font-size: .875rem; }
.mobile-lang button.is-active { border-color: var(--c-accent); color: var(--c-navy); }

/* ---------- Media frame (ครอบภาพ + hover zoom) ---------- */
.media-frame { overflow: hidden; border-radius: var(--radius); background: var(--c-beige); display: block; }
.media-frame img { width: 100%; height: 100%; object-fit: cover; transition: transform var(--dur-3) var(--ease); }
a:hover .media-frame img, button:hover .media-frame img { transform: scale(1.04); }
.media-frame--paper { background: var(--c-off-white); border: var(--line); }

/* ---------- ตารางเปรียบเทียบ ---------- */
.table-wrap { border: var(--line); border-radius: var(--radius-md); overflow: hidden; background: var(--c-white); }
.ctable th, .ctable td { text-align: left; padding: 20px 24px; vertical-align: top; font-size: .9375rem; }
.ctable thead th {
  background: var(--c-navy); color: #fff; font-weight: 500;
  font-size: .8125rem; text-transform: uppercase; letter-spacing: .12em;
}
html[lang="th"] .ctable thead th, html[lang="zh"] .ctable thead th {
  text-transform: none; letter-spacing: .04em; font-size: .9375rem;
}
.ctable thead th.is-highlight { background: var(--c-navy-soft); }
.ctable tbody tr + tr { border-top: var(--line); }
.ctable tbody th { font-weight: 500; color: var(--c-black); width: 24%; background: var(--c-off-white); }
.ctable tbody td { color: var(--c-graphite); }
.ctable tbody td.is-highlight { background: rgba(166,136,79,.05); }

.ccards { display: none; }
@media (max-width: 768px) {
  .table-wrap { display: none; }
  .ccards { display: grid; gap: var(--sp-3); }
}
.ccard { border: var(--line); border-radius: var(--radius-md); padding: var(--sp-3); background: var(--c-white); }
.ccard--accent { border-color: var(--c-sand); background: var(--c-off-white); }
.ccard__title {
  font-family: var(--font-body); font-size: 1.125rem; font-weight: 600; color: var(--c-navy);
  padding-bottom: var(--sp-2); border-bottom: 1px solid var(--c-sand); margin-bottom: var(--sp-2);
}
.ccard dt { font-size: .75rem; text-transform: uppercase; letter-spacing: .12em; color: var(--c-grey-500); margin-top: var(--sp-2); }
html[lang="th"] .ccard dt, html[lang="zh"] .ccard dt { text-transform: none; letter-spacing: .02em; font-size: .8125rem; }
.ccard dd { font-size: .9375rem; }

/* ---------- Filters ---------- */
.filters { display: flex; flex-wrap: wrap; gap: 6px; }
.filters--wide { margin-bottom: var(--sp-4); }
.filter {
  padding: 10px 18px; border: var(--line); border-radius: var(--radius);
  font-size: .875rem; color: var(--c-grey-500);
  transition: color var(--dur-1) var(--ease), border-color var(--dur-1) var(--ease), background var(--dur-1) var(--ease);
}
.filter:hover { color: var(--c-navy); border-color: var(--c-sand); }
.filter.is-active { background: var(--c-navy); border-color: var(--c-navy); color: #fff; }

/* ---------- ฟอร์ม ---------- */
.form { max-width: 640px; }
.form__row { display: grid; grid-template-columns: 1fr 1fr; gap: var(--sp-3); }
@media (max-width: 480px) { .form__row { grid-template-columns: 1fr; } }
.field { display: flex; flex-direction: column; gap: 8px; margin-bottom: var(--sp-3); }
.field label { font-size: .8125rem; letter-spacing: .06em; color: var(--c-grey-500); }
.field input, .field select, .field textarea {
  width: 100%; padding: 14px 16px; background: var(--c-white);
  border: var(--line); border-radius: var(--radius); font-size: .9375rem;
  transition: border-color var(--dur-1) var(--ease);
}
.field textarea { resize: vertical; min-height: 120px; }
.field input:focus, .field select:focus, .field textarea:focus { border-color: var(--c-navy); outline-offset: 1px; }
.field input::placeholder, .field textarea::placeholder { color: var(--c-grey-300); }
.field.has-error input, .field.has-error textarea { border-color: var(--c-danger); }
.field__error { font-size: .8125rem; color: var(--c-danger); min-height: 1em; }
.form__status { margin-top: var(--sp-2); font-size: .9375rem; color: var(--c-navy); }

/* ---------- Back to top ---------- */
.to-top {
  position: fixed; right: 24px; bottom: 24px; z-index: 90;
  width: 48px; height: 48px; display: grid; place-items: center;
  background: var(--c-navy); border-radius: var(--radius);
  opacity: 0; visibility: hidden; pointer-events: none; transform: translateY(8px);
  transition: opacity var(--dur-2) var(--ease), transform var(--dur-2) var(--ease),
              visibility var(--dur-2), background var(--dur-1) var(--ease);
}
.to-top.is-visible { opacity: 1; visibility: visible; pointer-events: auto; transform: translateY(0); }
.to-top:hover { background: var(--c-navy-soft); }
.to-top svg { width: 20px; height: 20px; fill: none; stroke: #fff; stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round; }

/* ---------- Scroll reveal ---------- */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity var(--dur-3) var(--ease), transform var(--dur-3) var(--ease); }
.reveal.is-visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .reveal { opacity: 1; transform: none; } }

/* ============================================================
   PROJECT MODAL — popup รายละเอียดผลงาน + แกลเลอรีรูป
   หมายเหตุ: [hidden] ถูกบังคับ display:none ใน reset.css แล้ว
   ============================================================ */
.pm {
  position: fixed; inset: 0; z-index: var(--z-modal);
  display: grid; place-items: center; padding: var(--gutter);
  background: rgba(14, 15, 17, .9);
  opacity: 0; pointer-events: none;
  transition: opacity var(--dur-2) var(--ease);
}
.pm.is-open { opacity: 1; pointer-events: auto; }

.pm__panel {
  position: relative;
  width: min(1180px, 100%); max-height: 90vh;
  display: grid; grid-template-columns: 1.55fr 1fr;
  background: var(--c-white); border-radius: var(--radius-md); overflow: hidden;
  transform: translateY(14px); transition: transform var(--dur-2) var(--ease);
}
.pm.is-open .pm__panel { transform: translateY(0); }

.pm__close {
  position: absolute; top: 16px; right: 16px; z-index: 3;
  width: 44px; height: 44px; display: grid; place-items: center;
  background: rgba(14,15,17,.55); border-radius: var(--radius);
  transition: background var(--dur-1) var(--ease);
}
.pm__close:hover { background: rgba(14,15,17,.8); }
.pm__close svg { width: 22px; height: 22px; fill: none; stroke: #fff; stroke-width: 1.5; }

.pm__stage { position: relative; background: var(--c-black); display: grid; place-items: center; min-height: 320px; }
.pm__stage img { width: 100%; height: 100%; max-height: 90vh; object-fit: contain; }
.pm__nav {
  position: absolute; top: 50%; transform: translateY(-50%); z-index: 2;
  width: 46px; height: 46px; display: grid; place-items: center;
  background: rgba(255,255,255,.14); border-radius: var(--radius);
  transition: background var(--dur-1) var(--ease);
}
.pm__nav:hover { background: rgba(255,255,255,.3); }
.pm__nav svg { width: 22px; height: 22px; fill: none; stroke: #fff; stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round; }
.pm__nav--prev { left: 14px; }
.pm__nav--next { right: 14px; }
.pm__counter {
  position: absolute; bottom: 14px; left: 50%; transform: translateX(-50%);
  font-size: .75rem; letter-spacing: .14em; color: rgba(255,255,255,.8);
}

.pm__info { padding: var(--sp-4) var(--sp-3); overflow-y: auto; }
.pm__cat { font-size: .75rem; letter-spacing: .14em; text-transform: uppercase; color: var(--c-accent); }
html[lang="th"] .pm__cat, html[lang="zh"] .pm__cat { text-transform: none; letter-spacing: .04em; font-size: .8125rem; }
.pm__title { font-family: var(--font-display); font-size: 1.75rem; font-weight: 400; line-height: 1.2; color: var(--c-black); margin: 8px 0; }
.pm__meta { font-size: .8125rem; color: var(--c-grey-500); padding-bottom: var(--sp-2); border-bottom: var(--line); margin-bottom: var(--sp-2); }
.pm__desc { font-size: .9375rem; color: var(--c-graphite); white-space: pre-line; }

.pm__thumbs { display: grid; grid-template-columns: repeat(5, 1fr); gap: 6px; margin-top: var(--sp-3); }
.pm__thumb {
  aspect-ratio: 1; overflow: hidden; border: 1px solid transparent; border-radius: var(--radius); opacity: .55;
  transition: opacity var(--dur-1) var(--ease), border-color var(--dur-1) var(--ease);
}
.pm__thumb img { width: 100%; height: 100%; object-fit: cover; }
.pm__thumb:hover { opacity: 1; }
.pm__thumb.is-active { opacity: 1; border-color: var(--c-accent); }

@media (max-width: 992px) {
  .pm { padding: 0; }
  .pm__panel { grid-template-columns: 1fr; max-height: 100vh; height: 100%; overflow-y: auto; border-radius: 0; }
  .pm__stage { min-height: 44vh; }
  .pm__stage img { max-height: 44vh; }
  .pm__thumbs { grid-template-columns: repeat(6, 1fr); }
}