* {
  box-sizing: border-box;
}

:root {
  color-scheme: light;
  --page-bg: #ffffff;
  --page-shell: #f9f9f9;
  --card: #ffffff;
  --card-border: rgba(255, 140, 0, 0.7);
  --text: #1f2937;
  --muted: #4b5563;
  --primary: #f59e0b;
  --primary-strong: #f97316;
  --primary-soft: #fef3c7;
  --shadow: 0 12px 28px rgba(15, 23, 42, 0.08);
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 16px;
  font-weight: 400;
  line-height: 1.7;
  background: var(--page-shell);
  color: var(--text);
}

p,
span,
div,
button,
a {
  font-family: inherit;
  font-size: inherit;
  font-weight: inherit;
  line-height: inherit;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  display: block;
  max-width: 100%;
}

.page-shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 30px 20px;
  background: var(--page-shell);
}

.maintenance-card {
  width: min(100%, 980px);
  padding: clamp(24px, 3vw, 40px);
  border: 2px solid var(--card-border);
  border-radius: 26px;
  background: var(--card);
  box-shadow: var(--shadow);
}

.status-chip {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1rem;
  color: var(--text);
  padding: 8px 14px;
  border-radius: 999px;
  background: var(--primary-soft);
  border: 1px solid rgba(245, 158, 11, 0.18);
}

.loading-icon {
  width: 14px;
  height: 14px;
  border: 2px solid rgba(245, 158, 11, 0.3);
  border-top-color: var(--primary-strong);
  border-radius: 50%;
  display: inline-block;
  animation: spin 0.9s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.site-title {
  margin: 14px 0 8px;
  font-size: clamp(2.1rem, 5vw, 4rem);
  font-weight: 900;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--primary-strong);
  line-height: 1.05;
}

.info-list {
  margin: 0 0 18px;
  padding-bottom: 18px;
  border-bottom: 1px solid rgba(15, 23, 42, 0.12);
}

.info-value {
  font-size: clamp(1.2rem, 2vw, 1.8rem);
  line-height: 1.5;
  font-weight: 500;
  color: var(--text);
}

.hero {
  margin-top: 12px;
}

.content-pane {
  display: block;
}

.lead {
  margin: 0;
  max-width: 100%;
  font-size: clamp(1.05rem, 2vw, 1.6rem);
  line-height: 1.7;
  color: var(--text);
}

.lead strong {
  font-weight: 800;
  color: var(--text);
}

.message {
  margin: 18px 0 0;
  max-width: 100%;
  font-size: clamp(1.05rem, 2vw, 1.55rem);
  line-height: 1.7;
  color: var(--muted);
}

.contact-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  margin-top: 28px;
}

.contact-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  min-height: 62px;
  padding: 0 24px;
  border-radius: 18px;
  border: 1px solid transparent;
  font-size: 1.1rem;
  font-weight: 700;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.contact-button:hover {
  transform: translateY(-1px);
}

.button-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  flex: 0 0 22px;
}

.button-icon svg,
.button-icon img {
  width: 100%;
  height: 100%;
  display: block;
}

.contact-button.call {
  background: linear-gradient(180deg, #22c55e, #16a34a);
  color: #fff;
  box-shadow: 0 12px 24px rgba(34, 197, 94, 0.2);
}

.contact-button.zalo {
  background: linear-gradient(180deg, #3b82f6, #2563eb);
  color: #fff;
  box-shadow: 0 12px 24px rgba(37, 99, 235, 0.18);
}

.bottom-note {
  margin-top: 30px;
  padding-top: 18px;
  border-top: 1px dashed rgba(15, 23, 42, 0.2);
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.7;
}

.bottom-note p {
  margin: 0;
}

.bottom-note p + p {
  margin-top: 10px;
}

@media (max-width: 860px) {
  .contact-grid {
    flex-direction: column;
    align-items: stretch;
  }

  .contact-button {
    width: 100%;
  }
}

@media (max-width: 540px) {
  .page-shell {
    padding: 14px;
  }

  .maintenance-card {
    padding: 22px;
    border-radius: 22px;
  }

  .contact-button {
    width: 100%;
  }
}