:root {
  --color-primary: #b91c1c;
  --color-primary-hover: #991b1b;
  --color-primary-light: #fef2f2;
  --color-primary-border: #fecaca;
  --bg-page: #f1f5f9;
  --bg-card: #ffffff;
  --text: #0f172a;
  --text-muted: #64748b;
  --border: #e2e8f0;
  --shadow: 0 4px 24px rgba(15, 23, 42, 0.06);
  --radius: 1rem;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: 'Roboto', system-ui, sans-serif;
  background: var(--bg-page);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

.page {
  padding: 2.5rem 1.25rem 3rem;
}

@media (min-width: 640px) {
  .page { padding: 3rem 1.5rem 4rem; }
}

/* Một khối trắng duy nhất */
.notice-shell {
  max-width: 600px;
  margin: 0 auto;
  padding: 2.5rem 1.75rem;
  background: var(--bg-card);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

@media (min-width: 640px) {
  .notice-shell { padding: 3rem 2.25rem; }
}

/* Brand — to nhất */
.brand {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin: 0;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  line-height: 1.15;
}

.brand__name {
  font-size: clamp(1.5rem, 5.5vw, 2rem);
  color: var(--color-primary);
}

.brand__highlight {
  font-size: clamp(1.6rem, 6vw, 2.15rem);
  color: var(--color-primary-hover);
}

/* Hero */
.notice-hero {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  text-align: center;
  padding-bottom: 2.25rem;
  margin-bottom: 2.25rem;
  border-bottom: 1px solid var(--border);
}

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.9rem;
  margin: 0;
  border-radius: 999px;
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-primary);
  background: var(--bg-card);
  border: 1px solid var(--color-primary-border);
}

.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-primary);
}

/* Thông báo — nhãn phụ giữa brand và badge */
.notice-subtitle {
  display: flex;
  align-items: center;
  gap: 0.875rem;
  width: 100%;
  max-width: 22rem;
}

.notice-subtitle__line {
  flex: 1;
  height: 1px;
  background: var(--border);
}

.notice-title {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  margin: 0;
  line-height: 1;
  color: var(--text-muted);
  white-space: nowrap;
}

.notice-body {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  max-width: 480px;
  margin: 0 auto;
}

.notice-text {
  font-size: 0.9375rem;
  color: var(--text-muted);
}

.text-accent {
  color: var(--color-primary);
  font-weight: 600;
}

/* Contacts */
.notice-section {
  padding-bottom: 2.25rem;
  margin-bottom: 2.25rem;
  border-bottom: 1px solid var(--border);
}

.section-head {
  text-align: center;
  margin-bottom: 1.5rem;
}

.section-head__line { display: none; }

.section-head__title {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.contacts-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.875rem;
}

@media (min-width: 480px) {
  .contacts-grid { grid-template-columns: repeat(4, 1fr); }
}

.contact-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  padding: 1rem 0.5rem;
  text-decoration: none;
  color: inherit;
  border: 1px solid var(--border);
  border-radius: 0.625rem;
  transition: border-color 0.2s, background 0.2s;
}

.contact-card:hover {
  border-color: var(--color-primary-border);
  background: var(--color-primary-light);
}

.contact-card__icon {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.contact-card__icon svg { width: 26px; height: 26px; }

.contact-card--discord .contact-card__icon { color: #5865f2; }
.contact-card--telegram .contact-card__icon { color: #0088cc; }
.contact-card--zalo .contact-card__icon { color: #0068ff; }
.contact-card--facebook .contact-card__icon { color: #1877f2; }

.contact-card__label {
  font-size: 0.78rem;
  font-weight: 500;
}

.contact-card__arrow { display: none; }

/* Warning */
.warning-box {
  display: flex;
  gap: 0.875rem;
  align-items: flex-start;
  padding: 1.125rem 1.25rem;
  margin-bottom: 2.25rem;
  border-radius: 0.625rem;
  background: var(--color-primary-light);
  border-left: 3px solid var(--color-primary);
}

.warning-box__icon {
  flex-shrink: 0;
  color: var(--color-primary);
  margin-top: 2px;
}

.warning-box__text {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* SEO */
.seo-card {
  padding-bottom: 2.25rem;
  margin-bottom: 2.25rem;
  border-bottom: 1px solid var(--border);
  text-align: left;
}

.seo-card__title {
  font-size: 0.9rem;
  font-weight: 700;
  margin-bottom: 0.875rem;
  line-height: 1.45;
}

.seo-card p {
  font-size: 0.8125rem;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
  line-height: 1.65;
}

.seo-card p:last-child { margin-bottom: 0; }

.seo-card__keywords {
  margin-top: 0.875rem !important;
  padding-top: 0.875rem;
  border-top: 1px dashed var(--border);
  font-size: 0.75rem !important;
}

.seo-card__keywords span { font-weight: 600; color: var(--text); }

/* Footer */
.notice-footer {
  text-align: center;
}

.closing {
  font-size: 0.9rem;
  font-weight: 500;
  margin-bottom: 1.25rem;
  line-height: 1.6;
}

.closing__heart {
  color: var(--color-primary);
  margin-right: 0.2rem;
}

.site-footer {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.site-footer strong {
  color: var(--color-primary);
  font-weight: 600;
}