* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

html {
  min-width: 320px;
  background: var(--canvas);
}

body {
  min-height: 100vh;
  margin: 0;
  overflow-x: hidden;
  background: radial-gradient(circle at 50% 0, rgb(40 223 255 / 6%), transparent 34rem), var(--canvas);
  color: var(--ink);
  font-family: "Noto Sans Thai", "Leelawadee UI", Tahoma, Arial, sans-serif;
  line-height: 1.5;
  scrollbar-color: var(--line-strong) var(--surface);
}

::selection {
  background: var(--brand-cyan);
  color: var(--on-accent);
}

button,
input,
select {
  font: inherit;
}

input::placeholder {
  color: var(--muted);
  opacity: 1;
}

button,
a,
select,
input {
  outline-offset: 3px;
}

:focus-visible {
  outline: 3px solid var(--blue-600);
}

.workspace-hero :focus-visible,
.upload-summary :focus-visible {
  outline-color: #fff;
  box-shadow: 0 0 0 5px var(--brand-cyan);
}

a {
  color: inherit;
}

.skip-link {
  position: fixed;
  z-index: 200;
  top: 8px;
  left: 8px;
  padding: 10px 14px;
  border-radius: 8px;
  background: var(--surface-raised);
  color: var(--ink);
  transform: translateY(-160%);
}

.skip-link:focus {
  transform: translateY(0);
}

.app-header {
  position: sticky;
  z-index: 50;
  top: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 66px;
  padding: 8px max(24px, calc((100vw - var(--content-width)) / 2));
  border-top: 4px solid var(--brand-cyan);
  border-bottom: 1px solid var(--line);
  background: rgb(17 25 35 / 96%);
  backdrop-filter: blur(14px);
}

.brand,
.header-actions,
.factory-switch {
  display: flex;
  align-items: center;
}

.brand {
  gap: 12px;
  text-decoration: none;
}

.brand-logo {
  display: block;
  width: 46px;
  height: 46px;
  object-fit: contain;
  filter: drop-shadow(0 4px 8px rgb(0 0 0 / 24%));
}

.brand-copy {
  display: grid;
}

.brand-copy strong {
  color: var(--ink);
  font-size: 17px;
}

.brand-copy small {
  color: var(--muted);
  font-size: 10px;
  letter-spacing: 0.08em;
}

.header-actions {
  gap: 12px;
}

.nav-link {
  padding: 9px 12px;
  border-radius: 9px;
  color: var(--ink);
  font-weight: 700;
  text-decoration: none;
}

.nav-link-button {
  border: 1px solid transparent;
  background: transparent;
}

.nav-link:hover {
  background: var(--surface-soft);
}

.nav-link-button:hover {
  border-color: var(--line-strong);
}

.factory-switch {
  gap: 8px;
}

.factory-switch span {
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
}

.factory-switch select,
.form-control {
  min-height: 42px;
  padding: 8px 34px 8px 12px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  background: var(--surface-soft);
  color: var(--ink);
}

.factory-switch select:hover,
.form-control:hover {
  border-color: var(--brand-sky);
}

.current-factory {
  padding: 7px 10px;
  border: 1px solid var(--factory-accent);
  border-radius: 999px;
  border-color: var(--line-strong);
  background: var(--surface-soft);
  box-shadow: inset 3px 0 0 var(--factory-accent);
  color: var(--ink);
  font-size: 12px;
  font-weight: 800;
}

#main-content {
  width: min(calc(100% - 40px), var(--content-width));
  min-height: calc(100vh - 66px);
  margin: 0 auto;
  padding: 30px 0 64px;
}

#main-content:focus {
  outline: none;
}

#main-content.factory-workspace {
  padding-bottom: 8px;
}

.page-loading,
.empty-state {
  padding: 48px 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--surface);
  text-align: center;
}

.login-shell {
  display: grid;
  place-items: center;
  min-height: calc(100vh - 180px);
}

.login-card {
  display: grid;
  gap: 12px;
  width: min(460px, 100%);
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
}

.login-card h1,
.login-card p {
  margin: 0;
}

.login-card > p:nth-child(3) {
  color: var(--muted);
}

.login-field {
  display: grid;
  gap: 6px;
}

.login-field span {
  font-size: 12px;
  font-weight: 700;
  color: var(--muted);
}

.page-title {
  max-width: 850px;
  margin: 0;
  color: var(--ink);
  font-size: clamp(30px, 3vw, 44px);
  line-height: 1.03;
  letter-spacing: -0.035em;
}

.page-lead {
  max-width: 850px;
  color: var(--muted);
  font-size: 15px;
}

.eyebrow {
  margin: 0 0 6px;
  color: var(--brand-cyan);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.16em;
}

.section-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
  margin: 22px 0 14px;
}

.section-heading h2,
.section-heading p {
  margin: 0;
}

.section-heading > p {
  color: var(--muted);
}

.upload-intro {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.upload-intro .page-title {
  font-size: clamp(26px, 2.2vw, 34px);
}

.pre-line {
  white-space: pre-line;
}

@media (max-width: 820px) {
  .app-header {
    align-items: flex-start;
    padding-inline: 16px;
  }

  .header-actions {
    flex-wrap: wrap;
    justify-content: flex-end;
  }

  .brand-copy small,
  .factory-switch span,
  .nav-link {
    display: none;
  }

  #main-content {
    width: min(calc(100% - 24px), var(--content-width));
    padding-top: 22px;
  }

  .section-heading {
    align-items: flex-start;
    flex-direction: column;
  }

  .brand-logo {
    width: 42px;
    height: 42px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.001ms !important;
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
  }
}