/* ============================
 * base.css — Shared tokens & utilities
 * ============================ */
:root {
  /* Color tokens */
  --color-bg-950: #08080a;
  --color-bg-900: #0f1014;
  --color-bg-800: #15171d;
  --color-bg-700: #1d2028;
  --color-bg-600: #252a34;
  --color-surface-500: #2e3440;
  --color-surface-400: #374050;
  --color-surface-300: #40495c;
  --color-text-primary: #f5f7fa;
  --color-text-secondary: #cbd3e1;
  --color-text-muted: #9aa6bc;
  --color-border: rgba(255, 255, 255, 0.08);
  --color-shadow: rgba(15, 17, 24, 0.45);

  --color-accent: #00c6ff;
  --color-accent-strong: #42e8b4;
  --color-accent-gradient: linear-gradient(135deg, #00c6ff, #0072ff);
  --color-success: #2dd4bf;
  --color-warning: #fbbf24;
  --color-danger: #f87171;

  /* Typography */
  --font-family-base: 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, 'Helvetica Neue', sans-serif;
  --font-size-base: 16px;
  --font-line-height: 1.6;
  --font-weight-regular: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;

  /* Spacing scale */
  --space-2xs: 4px;
  --space-xs: 8px;
  --space-sm: 12px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;

  /* Radius & shadow */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --shadow-sm: 0 8px 20px rgba(0, 0, 0, 0.25);
  --shadow-md: 0 20px 45px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 36px 60px rgba(0, 0, 0, 0.45);

  /* Container widths */
  --container-sm: 680px;
  --container-md: 960px;
  --container-lg: 1180px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: radial-gradient(circle at top right, rgba(0, 198, 255, 0.08), transparent 35%),
              radial-gradient(circle at bottom left, rgba(66, 232, 180, 0.08), transparent 40%),
              var(--color-bg-900);
  color: var(--color-text-primary);
  font-family: var(--font-family-base);
  font-size: var(--font-size-base);
  line-height: var(--font-line-height);
  min-height: 100vh;
}

main {
  display: block;
}

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

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: opacity 0.2s ease;
}

a:hover {
  opacity: 0.85;
}

p {
  margin: 0 0 var(--space-md);
  color: var(--color-text-secondary);
}

h1, h2, h3, h4, h5, h6 {
  margin: 0 0 var(--space-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
}

ul {
  padding-left: 1.25rem;
  margin: 0 0 var(--space-md);
}

button,
.btn {
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: var(--font-weight-semibold);
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.3s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  padding: 0.65rem 1.35rem;
  -webkit-appearance: none;
  appearance: none;
  background-color: transparent;
  text-decoration: none;
}

.btn:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
  outline: 2px solid rgba(0, 198, 255, 0.6);
  outline-offset: 2px;
  box-shadow: 0 0 0 4px rgba(0, 198, 255, 0.15);
}

.btn-primary {
  background: linear-gradient(135deg, #00c6ff, #0072ff);
  background: var(--color-accent-gradient);
  color: #05131f;
  box-shadow: 0 15px 35px rgba(0, 114, 255, 0.35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 20px 45px rgba(0, 198, 255, 0.35);
}

.btn-secondary {
  background: rgba(0, 198, 255, 0.12);
  color: var(--color-text-primary);
  border: 1px solid rgba(0, 198, 255, 0.25);
}

.btn-secondary:hover {
  background: rgba(0, 198, 255, 0.18);
}

.btn-ghost {
  background: transparent;
  color: var(--color-text-secondary);
  border: 1px solid rgba(255, 255, 255, 0.12);
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.06);
}

.btn-outline {
  background: transparent;
  color: var(--color-text-primary);
  border: 1px solid var(--color-border);
}

.btn-outline:hover {
  border-color: rgba(0, 198, 255, 0.5);
  color: var(--color-accent);
}

.btn-danger {
  background: rgba(248, 113, 113, 0.1);
  color: #fca5a5;
  border: 1px solid rgba(248, 113, 113, 0.25);
}

.btn-danger:hover {
  background: rgba(248, 113, 113, 0.18);
}

.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  background: rgba(0, 198, 255, 0.12);
  color: var(--color-accent);
}

.container-sm {
  width: min(100%, var(--container-sm));
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.container-md {
  width: min(100%, var(--container-md));
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.container-lg {
  width: min(100%, var(--container-lg));
  margin: 0 auto;
  padding: 0 var(--space-xl);
}

.section {
  padding: var(--space-2xl) 0;
}

.section-muted {
  background: linear-gradient(180deg, rgba(15, 17, 24, 0.75), rgba(15, 17, 24, 0.95));
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.card {
  background: rgba(21, 23, 29, 0.92);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(12px);
}

.card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.grid {
  display: grid;
  gap: var(--space-lg);
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.grid-4 {
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.kpi-strip {
  display: grid;
  gap: var(--space-md);
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

.kpi-card {
  padding: var(--space-md);
  border-radius: var(--radius-md);
  background: rgba(0, 198, 255, 0.12);
  border: 1px solid rgba(0, 198, 255, 0.18);
  box-shadow: 0 12px 35px rgba(0, 198, 255, 0.15);
}

.table-wrapper {
  overflow-x: auto;
  border-radius: var(--radius-md);
  border: 1px solid rgba(255, 255, 255, 0.06);
  background: rgba(15, 17, 24, 0.85);
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 560px;
}

thead {
  background: rgba(0, 198, 255, 0.12);
  color: var(--color-text-primary);
}

thead th {
  position: sticky;
  top: 0;
  padding: var(--space-sm) var(--space-md);
  text-align: left;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

tbody td {
  padding: var(--space-sm) var(--space-md);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  color: var(--color-text-secondary);
}

tbody tr:nth-child(even) {
  background: rgba(255, 255, 255, 0.02);
}

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 0.25rem 0.75rem;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: var(--font-weight-medium);
}

.status-pill.success {
  background: rgba(45, 212, 191, 0.16);
  color: #5eead4;
}

.status-pill.warning {
  background: rgba(251, 191, 36, 0.16);
  color: #facc15;
}

.status-pill.danger {
  background: rgba(248, 113, 113, 0.16);
  color: #fca5a5;
}

input,
textarea,
select {
  width: 100%;
  padding: 0.75rem 1rem;
  border-radius: var(--radius-sm);
  background: rgba(18, 20, 26, 0.9);
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--color-text-primary);
  font-size: 0.95rem;
  transition: border 0.2s ease, box-shadow 0.2s ease;
}

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

input:focus,
textarea:focus,
select:focus {
  border-color: rgba(0, 198, 255, 0.45);
  box-shadow: 0 0 0 4px rgba(0, 198, 255, 0.12);
}

.form-grid {
  display: grid;
  gap: var(--space-md);
}

.form-grid.two-col {
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.form-footer {
  display: flex;
  justify-content: flex-end;
  gap: var(--space-sm);
}

.alert-banner {
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(255, 255, 255, 0.04);
  font-weight: var(--font-weight-medium);
}

.hero {
  display: grid;
  gap: var(--space-xl);
  align-items: center;
}

.hero.two-col {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.hero-visual {
  position: relative;
  padding: var(--space-lg);
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, rgba(0, 198, 255, 0.12), rgba(66, 232, 180, 0.12));
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: var(--shadow-md);
}

.hero-visual::after {
  content: '';
  position: absolute;
  inset: 16px;
  border-radius: var(--radius-md);
  border: 1px dashed rgba(0, 198, 255, 0.25);
  pointer-events: none;
  z-index: 0;
}

.section-heading {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  margin-bottom: var(--space-lg);
  max-width: 640px;
}

.section-heading span {
  color: var(--color-text-muted);
  font-size: 0.85rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.testimonials-grid {
  display: grid;
  gap: var(--space-lg);
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.testimonial-card {
  padding: var(--space-lg);
  background: rgba(21, 23, 29, 0.95);
  border-radius: var(--radius-md);
  border: 1px solid rgba(255, 255, 255, 0.06);
  box-shadow: var(--shadow-sm);
}

.feature-card {
  padding: var(--space-lg);
  background: rgba(21, 23, 29, 0.9);
  border: 1px solid rgba(0, 198, 255, 0.12);
  border-radius: var(--radius-lg);
  box-shadow: 0 12px 36px rgba(0, 198, 255, 0.12);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.feature-card strong {
  font-size: 1.1rem;
  color: var(--color-text-primary);
}

.feature-card p {
  margin: 0;
}

.icon-circle {
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: rgba(0, 198, 255, 0.14);
  color: var(--color-accent);
  font-size: 1.4rem;
}

.cta-banner {
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  background: linear-gradient(135deg, rgba(0, 198, 255, 0.28), rgba(66, 232, 180, 0.22));
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: var(--shadow-md);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  align-items: flex-start;
}

.divider {
  height: 1px;
  width: 100%;
  background: rgba(255, 255, 255, 0.08);
  margin: var(--space-lg) 0;
}

.tabs {
  display: flex;
  gap: var(--space-sm);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  margin-bottom: var(--space-md);
}

.tab {
  padding: 0.6rem 1.1rem;
  border-radius: var(--radius-sm) var(--radius-sm) 0 0;
  background: transparent;
  border: none;
  color: var(--color-text-muted);
  cursor: pointer;
  transition: color 0.2s ease, background 0.2s ease;
}

.tab.active {
  background: rgba(0, 198, 255, 0.12);
  color: var(--color-text-primary);
}

.subtitle {
  color: var(--color-text-muted);
  font-size: 1rem;
}

.muted-link {
  color: var(--color-text-muted);
  text-decoration: underline;
}

.table-actions {
  display: inline-flex;
  gap: var(--space-xs);
}

.hidden {
  display: none !important;
}

.modal-open {
  overflow: hidden;
}

@media (max-width: 768px) {
  .container-lg,
  .container-md,
  .container-sm {
    padding: 0 var(--space-md);
  }

  .hero.two-col {
    grid-template-columns: 1fr;
  }

  table {
    min-width: unset;
  }
}