:root {
  --bg: #0f172a;
  --panel: #111827;
  --panel-soft: #1f2937;
  --text: #e5e7eb;
  --muted: #94a3b8;
  --primary: #2563eb;
  --primary-soft: #1d4ed8;
  --success: #16a34a;
  --danger: #dc2626;
  --border: rgba(148, 163, 184, 0.22);
  --shadow: 0 18px 50px rgba(15, 23, 42, 0.35);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: linear-gradient(180deg, #020617, #0f172a 30%, #111827);
  color: var(--text);
}

a {
  color: #93c5fd;
}

.container {
  width: min(1120px, calc(100% - 2rem));
  margin: 0 auto;
}

.page-shell {
  min-height: 100vh;
  padding: 2rem 0 4rem;
}

.hero,
.card,
.table-card,
.auth-card {
  background: rgba(17, 24, 39, 0.92);
  border: 1px solid var(--border);
  border-radius: 20px;
  box-shadow: var(--shadow);
}

.hero,
.auth-card {
  padding: 2rem;
}

.hero-grid,
.dashboard-grid,
.split-grid {
  display: grid;
  gap: 1.25rem;
}

.hero-grid {
  grid-template-columns: 1.2fr 0.8fr;
  align-items: stretch;
}

.dashboard-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.split-grid {
  grid-template-columns: 1fr 1fr;
}

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.nav-links {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.nav-links a,
.nav-links button {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
  padding: 0.75rem 1rem;
  border-radius: 999px;
  text-decoration: none;
  cursor: pointer;
}

.nav-links a.active {
  background: rgba(37, 99, 235, 0.2);
  border-color: rgba(96, 165, 250, 0.45);
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

.muted {
  color: var(--muted);
}

.card,
.table-card {
  padding: 1.25rem;
}

.stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.stat {
  padding: 1rem;
  background: rgba(15, 23, 42, 0.55);
  border-radius: 16px;
  border: 1px solid var(--border);
}

.form-grid {
  display: grid;
  gap: 1rem;
}

.field {
  display: grid;
  gap: 0.4rem;
}

label {
  font-size: 0.92rem;
  color: var(--muted);
}

input,
select,
textarea {
  width: 100%;
  padding: 0.85rem 1rem;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: rgba(15, 23, 42, 0.75);
  color: var(--text);
}

button,
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  border: none;
  border-radius: 12px;
  padding: 0.9rem 1.2rem;
  font-weight: 700;
  cursor: pointer;
  text-decoration: none;
}

.button-primary {
  background: var(--primary);
  color: #fff;
}

.button-secondary {
  background: rgba(30, 41, 59, 0.95);
  color: var(--text);
  border: 1px solid var(--border);
}

.button-danger {
  background: var(--danger);
  color: #fff;
}

.actions {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.message {
  padding: 0.85rem 1rem;
  border-radius: 12px;
  margin-bottom: 1rem;
  border: 1px solid transparent;
}

.message.info {
  background: rgba(37, 99, 235, 0.15);
  border-color: rgba(96, 165, 250, 0.35);
}

.message.success {
  background: rgba(22, 163, 74, 0.16);
  border-color: rgba(74, 222, 128, 0.3);
}

.message.error {
  background: rgba(220, 38, 38, 0.16);
  border-color: rgba(248, 113, 113, 0.3);
}

table {
  width: 100%;
  border-collapse: collapse;
}

th,
td {
  text-align: left;
  padding: 0.9rem;
  border-bottom: 1px solid rgba(148, 163, 184, 0.12);
}

th {
  color: var(--muted);
  font-weight: 600;
}

.badge {
  display: inline-flex;
  border-radius: 999px;
  padding: 0.35rem 0.7rem;
  font-size: 0.78rem;
  background: rgba(37, 99, 235, 0.18);
}

.auth-layout {
  max-width: 980px;
  margin: 2rem auto 0;
}

.section-stack {
  display: grid;
  gap: 1.25rem;
}

@media (max-width: 820px) {
  .hero-grid,
  .dashboard-grid,
  .split-grid,
  .stats {
    grid-template-columns: 1fr;
  }

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

/* SEO article styling */
.seo-hero {
  padding: 2.25rem 2rem;
}

.seo-content {
  line-height: 1.7;
  color: var(--text);
}

.seo-content p {
  color: var(--text);
}

.seo-content h2,
.seo-content h3 {
  margin-top: 1.25rem;
}

.footer {
  margin-top: 2.5rem;
  padding: 1.25rem 0;
  color: var(--muted);
  font-size: 0.95rem;
  border-top: 1px solid rgba(148, 163, 184, 0.18);
}

.contact-choice-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.25rem;
  margin-top: 1rem;
}

@media (max-width: 820px) {
  .contact-choice-grid {
    grid-template-columns: 1fr;
  }
}

.button-whatsapp {
  background: #25d366;
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.12);
}

.button-whatsapp:hover {
  filter: brightness(1.05);
}

.char-count {
  font-size: 0.85rem;
  color: var(--muted);
  text-align: right;
}