:root {
  --bg:        #252525;
  --surface:   #252525;
  --surface-2: #252525;
  --border:    rgba(255,255,255,0.08);
  --border-hi: rgba(255,255,255,0.15);

  --text:       var(--brand-text);
  --text-mid:   var(--brand-text);
  --text-muted: var(--brand-text);

  --accent:       var(--brand-blue);
  --accent-tint:  #a8c4ec; /* light blue, for text on dark surfaces */
  --accent-glow:  rgba(var(--brand-blue-rgb), 0.18);

  --accent-2:      var(--brand-red);
  --accent-2-tint: #e8a3af; /* light red, for text on dark surfaces */

  --accent-success:      var(--brand-blue);
  --accent-success-tint: #a8c4ec; /* light blue, for text on dark surfaces */
}

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

nav.topnav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(37,37,37,0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  padding: 0 2rem;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.nav-logo img {
  height: 32px;
  width: auto;
}

.nav-logo-text {
  font-size: 18px;
  color: var(--text);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.nav-badge {
  font-size: 11px;
  font-weight: 700;
  color: var(--text-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.lang-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 5px 10px;
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
  color: var(--text);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.06em;
}

.lang-btn svg {
  width: 20px;
  height: 10px;
  border-radius: 2px;
  display: block;
  flex-shrink: 0;
}

.lang-btn:hover {
  border-color: var(--border-hi);
  background: rgba(255,255,255,0.05);
  color: var(--text);
}

.lang-btn.active {
  border-color: rgba(var(--brand-blue-rgb), 0.5);
  background: var(--accent-glow);
  color: var(--accent);
}

header {
  padding: 6rem 2rem 5rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.header-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1.5rem;
  padding: 6px 14px;
  border: 1px solid rgba(var(--brand-blue-rgb),0.3);
  border-radius: 100px;
  background: rgba(var(--brand-blue-rgb),0.08);
}

header h1 {
  font-size: clamp(2.4rem, 6vw, 4rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--text);
  margin-bottom: 1.5rem;
}

header h1 span { color: var(--accent); }

.header-meta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  flex-wrap: wrap;
  font-size: 13px;
  color: var(--text-muted);
}

.header-meta-item {
  padding: 0 1rem;
  border-right: 1px solid var(--border-hi);
}
.header-meta-item:last-child { border-right: none; }

.wrapper {
  max-width: 820px;
  margin: 0 auto;
  padding: 3rem 2rem 7rem;
}

.intro-callout {
  border: 1px solid rgba(var(--brand-blue-rgb),0.25);
  background: rgba(var(--brand-blue-rgb),0.05);
  border-radius: 12px;
  padding: 1.25rem 1.5rem;
  margin-bottom: 3rem;
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}

.intro-callout-icon {
  font-size: 18px;
  flex-shrink: 0;
  margin-top: 2px;
}

.intro-callout p {
  font-size: 14.5px;
  color: var(--accent-tint);
  margin: 0;
  line-height: 1.6;
  text-align: justify;
  text-justify: inter-word;
}

.toc {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.75rem 2rem;
  margin-bottom: 3.5rem;
  overflow: hidden;
}

.toc-title {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 1.25rem;
}

.toc ol {
  list-style: none;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.15rem 2rem;
}

@media (max-width: 540px) { .toc ol { grid-template-columns: 1fr; } }

.toc li { margin-bottom: 0.3rem; }

.toc a {
  color: var(--text-mid);
  text-decoration: none;
  font-size: 13.5px;
  font-weight: 400;
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
  padding: 3px 0;
  transition: color 0.15s;
}

.toc a:hover { color: var(--accent); }

.toc a .num {
  font-size: 10px;
  color: var(--text-muted);
  font-weight: 700;
  min-width: 20px;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.05em;
}

/* ── Sections ── */
section { margin-bottom: 3.5rem; }

.section-header {
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border);
}

.section-num {
  font-variant-numeric: tabular-nums;
}

.wrapper h2 {
  font-size: 1.4rem;
  color: var(--text);
  letter-spacing: -0.01em;
}

.wrapper h3 {
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 1.75rem 0 0.6rem;
}

.wrapper p {
  margin-bottom: 1rem;
  color: var(--text-mid);
  text-align: justify;
  text-justify: inter-word;
}
.wrapper p:last-child { margin-bottom: 0; }

.wrapper ul, .wrapper ol {
  margin: 0.75rem 0 1rem 1.25rem;
  color: var(--text-mid);
}

.wrapper li { margin-bottom: 0.45rem; }

.wrapper strong { color: var(--text); }

.wrapper a { color: var(--accent); text-decoration: none; }
.wrapper a:hover { text-decoration: underline; }

.callout {
  border-left: 2px solid;
  padding: 1rem 1.25rem;
  border-radius: 0 8px 8px 0;
  margin: 1.5rem 0;
  font-size: 14.5px;
}

.callout-warn {
  border-color: var(--accent-2);
  background: rgba(var(--brand-red-rgb),0.06);
  color: var(--accent-2-tint);
}

.callout-info {
  border-color: var(--accent);
  background: var(--accent-glow);
  color: var(--accent-tint);
}

.callout-neutral {
  border-color: var(--border-hi);
  background: var(--surface);
  color: var(--text-mid);
}

.callout-success {
  border-color: var(--accent-success);
  background: rgba(var(--brand-blue-rgb),0.08);
  color: var(--accent-success-tint);
}

.callout p { color: inherit; margin-bottom: 0.5rem; }
.callout p:last-child { margin-bottom: 0; }

.callout-label {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
  opacity: 0.7;
}

/* ── Data table ── */
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  margin: 1rem 0;
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid var(--border);
}

.data-table th {
  background: var(--surface-2);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  padding: 0.7rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.data-table td {
  padding: 0.7rem 1rem;
  border-bottom: 1px solid var(--border);
  color: var(--text-mid);
  vertical-align: top;
}

.data-table tr:last-child td { border-bottom: none; }
.data-table td:first-child { font-weight: 500; color: var(--text); width: 32%; }
.data-table tr:hover td { background: rgba(255,255,255,0.02); }

/* ── Divider (used between the last section and the footer) ── */
.section-divider {
  border: none;
  border-top: 1px solid var(--border);
  margin: 0 0 3.5rem;
}

.mobile-menu-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  padding: 0;
  border: none;
  background: transparent;
  color: var(--text);
  cursor: pointer;
}

.mobile-menu-toggle svg {
  width: 24px;
  height: 24px;
}

.mobile-menu-overlay {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(10, 10, 10, 0.6);
  backdrop-filter: blur(2px);
  -webkit-backdrop-filter: blur(2px);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.25s ease, visibility 0.25s ease;
}

.mobile-menu-overlay.is-open {
  opacity: 1;
  visibility: visible;
}

.mobile-menu {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  z-index: 201;
  width: min(78vw, 320px);
  display: flex;
  flex-direction: column;
  padding: 1.25rem 1.75rem;
  background: var(--bg);
  border-left: 1px solid var(--border);
  box-shadow: -20px 0 60px rgba(0, 0, 0, 0.4);
  transform: translateX(100%);
  transition: transform 0.3s ease;
}

.mobile-menu.is-open {
  transform: translateX(0);
}

.mobile-menu-close {
  align-self: flex-end;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  padding: 0;
  margin-bottom: 2rem;
  border: none;
  background: transparent;
  color: var(--text);
  cursor: pointer;
}

.mobile-menu-close svg {
  width: 20px;
  height: 20px;
}

.mobile-menu-links {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.mobile-menu-links a {
  font-family: 'Sora', sans-serif;
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
  text-decoration: none;
}

.mobile-menu-links a:hover {
  text-decoration: underline;
}

.mobile-menu-footnote {
  margin-top: auto;
  padding-top: 1.5rem;
  font-size: 12px;
  font-weight: 700;
  color: var(--text);
  opacity: 0.7;
}

.mobile-menu-langs {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  margin-top: 1.25rem;
}

.mobile-menu-langs .lang-btn {
  width: 100%;
  justify-content: flex-start;
}

section[id] { scroll-margin-top: 72px; }

@media (max-width: 600px) {
  header { padding: 4rem 1.5rem 3rem; }
  .wrapper { padding: 2rem 1.25rem 5rem; }
  nav.topnav { padding: 0 1.25rem; }
  .header-meta-item { padding: 0 0.6rem; font-size: 12px; }
}

.contact-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 2rem;
}

@media (max-width: 600px) {
  .contact-card {
    padding: 1.5rem;
  }
}

.form-field {
  margin-bottom: 1.5rem;
}

.form-field:last-of-type {
  margin-bottom: 2rem;
}

.form-field label {
  display: block;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 0.6rem;
}

.form-field input,
.form-field select,
.form-field textarea {
  width: 100%;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.75rem 1rem;
  color: var(--text);
  font-family: 'Sora', sans-serif;
  font-size: 14.5px;
  transition: border-color 0.15s, background 0.15s;
}

.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus {
  outline: none;
  border-color: rgba(var(--brand-blue-rgb), 0.6);
  background: rgba(255, 255, 255, 0.04);
}

.form-field textarea {
  resize: vertical;
  min-height: 140px;
  line-height: 1.6;
}

.form-field select {
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%239E9E9E' stroke-width='2' stroke-linecap='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.9rem center;
  background-size: 16px;
  padding-right: 2.5rem;
  cursor: pointer;
}

.form-field select option {
  background: var(--surface-2);
  color: var(--text);
}

.form-submit {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.85rem 2.25rem;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 8px;
  font-family: 'Sora', sans-serif;
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0.03em;
  cursor: pointer;
  transition: opacity 0.15s ease;
}

.form-submit:hover {
  opacity: 0.88;
}

/* ── Toast ── */
.toast {
  position: fixed;
  left: 50%;
  bottom: 2rem;
  z-index: 500;
  transform: translateX(-50%) translateY(20px);
  background: var(--surface-2);
  border: 1px solid var(--border-hi);
  color: var(--text);
  padding: 0.85rem 1.75rem;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 700;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.45);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease, transform 0.25s ease;
}

.toast.is-visible {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}