/* ========================================
   COMPONENTS - SYSTEM
======================================== */

/* BUTTONS */

.button,
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: var(--control-height);
  padding: 0 20px;
  border: 1px solid var(--line);
  border-radius: var(--pill-radius);
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
  font-family: var(--font-ui);
  font-size: var(--text-base);
  line-height: 1;
  text-decoration: none;
  transition:
    border-color var(--dur-fast) var(--ease-standard),
    background-color var(--dur-fast) var(--ease-standard),
    color var(--dur-fast) var(--ease-standard),
    transform var(--dur-fast) var(--ease-standard),
    box-shadow var(--dur-fast) var(--ease-standard);
}

.button:hover,
.btn:hover {
  border-color: var(--accent);
  background: var(--surface-soft);
  color: var(--text);
  text-decoration: none;
}

.button:focus-visible,
.btn:focus-visible {
  outline: 2px solid var(--focus-ring);
  outline-offset: 2px;
}

.button.primary,
.btn.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--text);
  box-shadow: var(--atelier-depth-soft);
}

.button.primary:hover,
.btn.primary:hover {
  background: var(--accent-primary-hover);
  border-color: var(--accent-primary-hover);
  color: var(--text);
}

.button.ghost,
.btn.ghost {
  background: transparent;
  color: var(--text-muted);
}

.button.ghost:hover,
.btn.ghost:hover {
  background: var(--accent-soft);
  color: var(--text);
}

.button.secondary,
.btn.secondary {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--text);
  box-shadow: var(--atelier-depth-soft);
}

.button.secondary:hover,
.btn.secondary:hover {
  background: var(--accent-primary-hover);
  border-color: var(--accent-primary-hover);
  color: var(--text);
}

.button.danger,
.btn.danger {
  background: var(--danger);
  border-color: var(--danger);
  color: var(--color-white);
}

.button.danger:hover,
.btn.danger:hover {
  background: color-mix(in srgb, var(--danger) 82%, var(--color-paper));
  border-color: color-mix(in srgb, var(--danger) 82%, var(--color-paper));
}

.button.is-disabled,
.btn.is-disabled,
.button[aria-disabled="true"],
.btn[aria-disabled="true"] {
  opacity: 0.45;
  pointer-events: none;
  border-color: var(--line);
}

/* FORM ELEMENTS */

label {
  display: block;
  margin-bottom: 8px;
  font-size: var(--text-sm);
  color: var(--text);
}

.field,
input[type="text"],
input[type="email"],
input[type="password"],
input[type="url"],
input[type="search"],
textarea,
select {
  width: 100%;
  min-height: var(--control-height);
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--surface-soft);
  color: var(--text);
  font-family: var(--font-ui);
  font-size: var(--text-base);
  line-height: 1.5;
  outline: none;
  transition:
    border-color var(--dur-fast) var(--ease-standard),
    box-shadow var(--dur-fast) var(--ease-standard),
    background-color var(--dur-fast) var(--ease-standard);
}

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

input::placeholder,
textarea::placeholder {
  color: var(--muted);
}

.field:focus,
input:focus,
textarea:focus,
select:focus {
  border-color: var(--accent-system);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent-system) 22%, transparent);
}

/* SURFACE ELEMENTS */

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: none;
}

.panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: none;
}

.badge,
.tag {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: color-mix(in srgb, var(--surface-soft) 86%, var(--accent-system) 14%);
  font-size: var(--text-sm);
  line-height: 1;
  color: var(--text);
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.content-block {
  display: grid;
  gap: 16px;
}

.partner {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 120px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  transition:
    border-color var(--dur-fast) var(--ease-standard),
    transform var(--dur-fast) var(--ease-standard),
    box-shadow var(--dur-fast) var(--ease-standard);
}

.partner:hover {
  border-color: var(--accent);
  background: color-mix(in srgb, var(--surface) 88%, var(--accent-soft));
}

.partner img {
  max-height: 56px;
  width: auto;
  object-fit: contain;
}

.form-card {
  display: grid;
  gap: 18px;
}

.help-inline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 8px;
}

.help-inline > label,
.help-inline > h1,
.help-inline > h2,
.help-inline > h3,
.help-inline > h4,
.help-inline > h5,
.help-inline > h6,
.help-inline > p,
.help-inline > strong {
  margin: 0;
}

.help-inline > label {
  margin-bottom: 0;
}

.help {
  position: relative;
  display: inline-flex;
  align-items: center;
  vertical-align: middle;
}

.help-trigger {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.65rem;
  min-width: 1.65rem;
  height: 1.65rem;
  min-height: 1.65rem;
  padding: 0;
  border: 1px solid color-mix(in srgb, var(--line) 72%, var(--accent-system) 28%);
  border-radius: 999px;
  background: var(--surface-soft);
  color: color-mix(in srgb, var(--muted) 82%, var(--accent-system) 18%);
  font-family: var(--font-ui);
  font-size: 0.82rem;
  font-weight: 600;
  line-height: 1;
  cursor: pointer;
  transition:
    border-color var(--dur-fast) var(--ease-standard),
    background-color var(--dur-fast) var(--ease-standard),
    color var(--dur-fast) var(--ease-standard),
    transform var(--dur-fast) var(--ease-standard),
    box-shadow var(--dur-fast) var(--ease-standard);
}

.help-trigger:hover,
.help-trigger[aria-expanded="true"] {
  border-color: var(--accent-system);
  background: color-mix(in srgb, var(--surface-soft) 84%, var(--accent-system) 16%);
  color: var(--text);
}

.help-trigger:focus-visible {
  outline: 2px solid var(--focus-ring);
  outline-offset: 2px;
}

.help-panel {
  position: absolute;
  top: calc(100% + 10px);
  left: 0;
  z-index: 1200;
  display: grid;
  gap: 8px;
  width: min(22rem, calc(100vw - 24px));
  max-width: 100vw;
  padding: 14px 16px;
  border: 1px solid var(--line-strong);
  border-radius: 18px;
  background: color-mix(in srgb, var(--surface-soft) 94%, var(--color-black));
  box-shadow: var(--shadow-overlay);
  transform: translateX(var(--help-panel-shift, 0px));
}

.help-panel[hidden] {
  display: none !important;
}

.help--align-center .help-panel {
  left: 50%;
  transform: translateX(calc(-50% + var(--help-panel-shift, 0px)));
}

.help--align-end .help-panel {
  left: auto;
  right: 0;
}

.help--panel .help-panel {
  width: min(26rem, calc(100vw - 24px));
}

.help--modal .help-panel {
  position: fixed;
  top: 50%;
  left: 50%;
  width: min(26rem, calc(100vw - 24px));
  max-height: calc(100vh - 32px);
  overflow: auto;
  transform: translate(-50%, -50%);
  z-index: 1301;
}

.help-backdrop {
  position: fixed;
  inset: 0;
  z-index: 1300;
  border: 0;
  background: var(--bg-overlay-soft);
  backdrop-filter: blur(4px);
}

.help-backdrop[hidden] {
  display: none !important;
}

.help-panel__head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}

.help-panel__title {
  display: block;
  margin: 0;
  font-family: var(--font-ui);
  font-size: 0.9rem;
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--text);
}

.help-panel__body {
  margin: 0;
  font-family: var(--font-ui);
  font-size: 0.88rem;
  line-height: 1.55;
  color: var(--muted);
}

.help-panel__close {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  min-width: 2rem;
  height: 2rem;
  min-height: 2rem;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: transparent;
  color: var(--muted);
  font-family: var(--font-ui);
  line-height: 1;
  cursor: pointer;
}

.help-panel__close:hover,
.help-panel__close:focus-visible {
  border-color: var(--accent-system);
  color: var(--text);
}

body.has-help-modal {
  overflow: hidden;
}

/* ========================================
   SHARED PUBLIC HEADER
======================================== */

.site-header,
.platform-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  width: 100%;
  background: color-mix(in srgb, var(--bg-default) 92%, transparent);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(6px);
  transition:
    background-color var(--dur-fast) var(--ease-standard),
    border-color var(--dur-fast) var(--ease-standard),
    box-shadow var(--dur-fast) var(--ease-standard);
}

.header-inner,
.platform-header-inner {
  min-height: 82px;
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: clamp(24px, 2.8vw, 40px);
  padding-top: clamp(16px, 2vw, 22px);
  padding-bottom: clamp(16px, 2vw, 20px);
}

.brand,
.platform-brand-wrap {
  min-width: 0;
}

.brand-link,
.platform-brand-link {
  display: grid;
  gap: 6px;
}

.brand-name,
.platform-brand {
  font-family: var(--font-ui);
  font-weight: 700;
  font-size: clamp(1.55rem, 2.7vw, 2.15rem);
  line-height: 0.98;
  letter-spacing: -0.04em;
}

.tagline,
.platform-tagline {
  font-family: var(--font-ui);
  font-weight: 400;
  font-size: clamp(0.96rem, 1.1vw, 1.04rem);
  line-height: 1.15;
  letter-spacing: -0.01em;
  color: var(--muted);
}

.main-nav ul,
.platform-nav ul {
  display: flex;
  align-items: center;
  gap: clamp(16px, 1.9vw, 28px);
  flex-wrap: wrap;
}

.nav-link,
.platform-nav a {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  padding: 0;
  border: 0;
  border-bottom: 2px solid transparent;
  background: none;
  appearance: none;
  cursor: pointer;
  color: var(--text);
  font-family: var(--font-ui);
  font-size: clamp(0.95rem, 1vw, 1.02rem);
  font-weight: 400;
  line-height: 1;
  text-decoration: none;
  opacity: 0.84;
  transition:
    border-color var(--dur-fast) var(--ease-standard),
    color var(--dur-fast) var(--ease-standard),
    opacity var(--dur-fast) var(--ease-standard);
}

.nav-link:focus-visible,
.platform-nav a:focus-visible {
  border-bottom-color: var(--accent);
  opacity: 1;
  outline: 2px solid var(--focus-ring);
  outline-offset: 4px;
}

.nav-link:hover,
.nav-link.active,
.nav-link[aria-current="page"],
.platform-nav a:hover,
.platform-nav a.active,
.platform-nav a[aria-current="page"] {
  border-bottom-color: var(--accent);
  opacity: 1;
}

/* ========================================
   SHARED FOOTER
======================================== */

.site-footer {
  margin-top: var(--space-8);
  padding-top: clamp(28px, 3vw, 40px);
  padding-bottom: clamp(32px, 3.2vw, 48px);
  border-top: 1px solid var(--line);
}

.site-footer > .container.footer-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: clamp(24px, 4vw, 48px);
}

.site-footer .footer-col {
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-width: 0;
}

.site-footer .footer-title {
  margin: 0;
  font-family: var(--font-ui);
  font-weight: 400;
  font-size: clamp(0.8rem, 1vw, 0.95rem);
  line-height: 1.2;
  color: var(--muted);
  opacity: 0.6;
}

.site-footer .footer-stack {
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-width: 0;
}

.site-footer .footer-stack p,
.site-footer .footer-stack a {
  margin: 0;
  color: var(--text);
  font-family: var(--font-ui);
  font-size: clamp(0.85rem, 1vw, 1rem);
  line-height: 1.4;
  text-decoration: none;
}

.site-footer .footer-stack a:hover,
.site-footer .footer-stack a:focus-visible {
  text-decoration: underline;
  text-underline-offset: 0.12em;
}

.site-footer .footer-license {
  opacity: 0.74;
}

.site-footer--amt {
  margin-top: clamp(1.25rem, 2vw, 2rem);
  padding-top: clamp(20px, 2.4vw, 28px);
  padding-bottom: calc(clamp(22px, 2.8vw, 34px) + env(safe-area-inset-bottom, 0px));
  background:
    linear-gradient(
      180deg,
      transparent,
      color-mix(in srgb, var(--amt-bg, var(--bg-default)) 84%, transparent) 22%,
      var(--amt-bg, var(--bg-default))
    );
}

.site-footer--amt > .container.footer-grid {
  gap: clamp(16px, 2vw, 24px) clamp(18px, 2.4vw, 32px);
}

.site-footer--amt .footer-col {
  gap: 6px;
}

.site-footer--amt .footer-title {
  font-size: clamp(0.74rem, 0.92vw, 0.84rem);
  opacity: 0.52;
  letter-spacing: 0.01em;
}

.site-footer--amt .footer-stack {
  gap: 6px;
}

.site-footer--amt .footer-stack p,
.site-footer--amt .footer-stack a {
  font-size: clamp(0.82rem, 0.96vw, 0.92rem);
  line-height: 1.34;
}

.site-footer--amt .footer-license {
  font-size: 0.8rem;
  opacity: 0.62;
}

/* ========================================
   LEGAL PAGES
======================================== */

.legal-page .container.narrow,
.legal-page > .container.narrow {
  max-width: min(100%, 860px);
}

.legal-page__intro {
  margin-top: var(--space-4);
  max-width: var(--measure-text);
  color: var(--muted);
}

.legal-page__body {
  margin-top: var(--space-7);
  gap: var(--space-6);
}

.legal-section {
  display: grid;
  gap: var(--space-3);
  padding-top: var(--space-5);
  border-top: 1px solid var(--line);
}

.legal-section:first-child {
  padding-top: 0;
  border-top: 0;
}

.legal-section h2 {
  font-size: clamp(1.15rem, 1.7vw, 1.5rem);
  line-height: 1.15;
}

.legal-address {
  display: grid;
  gap: 2px;
  font-style: normal;
}

.legal-page a {
  color: var(--accent-system);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.14em;
}

.legal-page a:hover,
.legal-page a:focus-visible {
  text-decoration-thickness: 2px;
}

/* ========================================
   RESPONSIVE
======================================== */

@media (max-width: 900px) {
  .header-inner,
  .platform-header-inner {
    gap: 20px;
  }

  .main-nav ul,
  .platform-nav ul {
    gap: 14px;
  }

  .site-footer > .container.footer-grid {
    gap: clamp(18px, 3vw, 32px);
  }

  .site-footer .footer-title {
    font-size: clamp(0.76rem, 0.92vw, 0.88rem);
  }

  .site-footer .footer-stack p,
  .site-footer .footer-stack a {
    font-size: clamp(0.8rem, 0.94vw, 0.92rem);
  }
}

@media (max-width: 720px) {
  .header-inner,
  .platform-header-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .main-nav ul,
  .platform-nav ul {
    gap: 12px;
  }

  .site-footer > .container.footer-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .site-footer--amt {
    margin-top: 0.45rem;
    padding-top: 10px;
    padding-bottom: calc(12px + env(safe-area-inset-bottom, 0px));
  }

  .site-footer--amt > .container.footer-grid {
    gap: 8px 14px;
  }

  .site-footer--amt .footer-col {
    gap: 3px;
  }

  .site-footer--amt .footer-stack {
    gap: 3px;
  }

  .site-footer--amt .footer-stack p,
  .site-footer--amt .footer-stack a {
    font-size: 0.8rem;
    line-height: 1.18;
  }
}

@media (max-width: 520px) {
  .site-footer > .container.footer-grid {
    grid-template-columns: 1fr;
  }

  .site-footer--amt {
    margin-top: 0.32rem;
    padding-top: 8px;
    padding-bottom: calc(10px + env(safe-area-inset-bottom, 0px));
  }

  .site-footer--amt > .container.footer-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 6px 12px;
  }

  .site-footer--amt .footer-title {
    font-size: 0.68rem;
    opacity: 0.42;
  }

  .site-footer--amt .footer-stack p,
  .site-footer--amt .footer-stack a {
    font-size: 0.74rem;
    line-height: 1.12;
  }

  .site-footer--amt .footer-license {
    font-size: 0.7rem;
  }

  .help-panel,
  .help--panel .help-panel,
  .help--modal .help-panel {
    width: min(100vw - 20px, 22rem);
  }

  .help-inline {
    gap: 6px;
  }
}

/* SAFETY */

.card,
.panel,
.platform-card,
.section-card {
  min-width: 0;
}

.card h1,
.card h2,
.card h3,
.card h4,
.panel h1,
.panel h2,
.panel h3,
.panel h4,
.platform-card h1,
.platform-card h2,
.platform-card h3,
.platform-card h4,
.section-card h1,
.section-card h2,
.section-card h3,
.section-card h4,
.card p,
.panel p,
.platform-card p,
.section-card p {
  min-width: 0;
  max-width: 100%;
  overflow-wrap: anywhere;
  word-break: break-word;
}

.project-map-excerpt {
  display: grid;
  gap: 14px;
}

.project-map-excerpt__stage {
  min-height: 280px;
  border: 1px solid var(--line);
  border-radius: 18px;
  overflow: hidden;
  background:
    radial-gradient(circle at top left, color-mix(in srgb, var(--accent-system) 20%, transparent), transparent 48%),
    linear-gradient(180deg, color-mix(in srgb, var(--surface-soft) 90%, var(--color-paper)), var(--surface));
}

.project-map-excerpt__meta {
  display: grid;
  gap: 10px;
}

.project-map-excerpt__meta p {
  margin: 0;
}

.project-map-excerpt__chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.project-map-excerpt__chips span {
  display: inline-flex;
  align-items: center;
  padding: 6px 10px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--surface-soft) 84%, var(--accent-system) 16%);
  color: var(--muted);
  font-size: 0.86rem;
}