/* RedVio AI — Enterprise design system */

@import url("https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap");

:root {
  --font-sans: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;

  --bg-base: #070b12;
  --bg-subtle: #0c1220;
  --surface: #111827;
  --surface-raised: #161f33;
  --surface-overlay: rgba(17, 24, 39, 0.78);
  --border-subtle: rgba(148, 163, 184, 0.08);
  --border-default: rgba(148, 163, 184, 0.14);
  --border-strong: rgba(148, 163, 184, 0.22);

  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;

  --brand-red: #ef4444;
  --brand-red-hover: #f87171;
  --brand-red-soft: rgba(239, 68, 68, 0.14);
  --brand-cyan: #22d3ee;
  --brand-cyan-soft: rgba(34, 211, 238, 0.12);

  --bg: var(--bg-base);
  --surface2: var(--surface-raised);
  --border: var(--border-default);
  --text: var(--text-primary);
  --muted: var(--text-secondary);
  --accent: #3b82f6;
  --accent2: var(--brand-cyan);
  --danger: var(--brand-red);
  --warn: #f59e0b;
  --ok: #22c55e;

  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;
  --space-16: 64px;
  --space-20: 80px;
  --space-24: 96px;

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --radius-2xl: 24px;
  --radius: var(--radius-lg);

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.24);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.28), 0 2px 8px rgba(0, 0, 0, 0.16);
  --shadow-lg: 0 24px 48px rgba(0, 0, 0, 0.36);
  --shadow-xl: 0 32px 64px rgba(0, 0, 0, 0.45);
  --shadow-glow-red: 0 0 48px rgba(239, 68, 68, 0.12);
  --shadow-glow-cyan: 0 0 48px rgba(34, 211, 238, 0.1);
  --shadow: var(--shadow-md);

  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --duration-fast: 150ms;
  --duration-normal: 250ms;

  --sidebar-width: 272px;
  --content-max: 1200px;
}

html {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  line-height: 1.6;
}

h1 {
  font-size: clamp(1.75rem, 3vw, 2.125rem);
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.2;
}

h2 {
  font-size: clamp(1.375rem, 2.5vw, 1.75rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.25;
}

h3 {
  font-size: 1.0625rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.subtitle,
.text-secondary {
  color: var(--text-secondary);
  font-size: 1rem;
  line-height: 1.65;
  max-width: 52ch;
}

.page-header {
  margin-bottom: var(--space-8);
}

.page-header h1 {
  margin: 0 0 var(--space-2);
}

.page-header .subtitle {
  margin: 0;
}

.page-kicker {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--brand-cyan);
  margin-bottom: var(--space-3);
}

.page-kicker::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--brand-red);
  box-shadow: 0 0 8px var(--brand-red);
}

.mb-6 { margin-bottom: var(--space-6); }
.mb-4 { margin-bottom: var(--space-4); }
.mt-4 { margin-top: var(--space-4); }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  border: none;
  border-radius: var(--radius-md);
  padding: 0.625rem 1.125rem;
  font-family: inherit;
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  cursor: pointer;
  transition: transform var(--duration-fast) var(--ease-out),
    box-shadow var(--duration-normal) var(--ease-out),
    background var(--duration-fast) var(--ease-out),
    border-color var(--duration-fast) var(--ease-out);
  text-decoration: none;
}

.btn:hover {
  text-decoration: none;
  transform: translateY(-1px);
}

.btn:active {
  transform: translateY(0);
}

.btn-primary,
.btn:not(.secondary):not(.btn-ghost):not(.btn-sm) {
  background: linear-gradient(135deg, var(--brand-red) 0%, #dc2626 100%);
  color: #fff;
  box-shadow: var(--shadow-sm), 0 0 0 1px rgba(239, 68, 68, 0.2);
}

.btn-primary:hover,
.btn:not(.secondary):not(.btn-ghost):hover {
  box-shadow: var(--shadow-md), var(--shadow-glow-red);
}

.btn-secondary,
.btn.secondary {
  background: var(--surface-raised);
  border: 1px solid var(--border-default);
  color: var(--text-primary);
}

.btn-secondary:hover,
.btn.secondary:hover {
  background: rgba(255, 255, 255, 0.04);
  border-color: var(--border-strong);
}

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

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.04);
  border-color: var(--border-strong);
}

.btn-sm {
  padding: 0.5rem 0.875rem;
  font-size: 0.8125rem;
}

.btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
  transform: none;
}

/* Cards */
.card {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.03) 0%, transparent 100%), var(--surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: var(--shadow-sm);
  transition: border-color var(--duration-normal) var(--ease-out),
    box-shadow var(--duration-normal) var(--ease-out),
    transform var(--duration-normal) var(--ease-out);
}

.card:hover {
  border-color: var(--border-default);
}

.card h3 {
  margin: 0 0 var(--space-2);
}

.card-glass {
  background: var(--surface-overlay);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-subtle);
}

/* App shell */
body.app-shell {
  background: var(--bg-base);
  background-image:
    radial-gradient(ellipse 80% 50% at 50% -20%, rgba(34, 211, 238, 0.06), transparent),
    radial-gradient(ellipse 60% 40% at 100% 0%, rgba(239, 68, 68, 0.05), transparent);
}

.layout {
  display: grid;
  grid-template-columns: var(--sidebar-width) 1fr;
  min-height: 100vh;
}

.sidebar {
  position: sticky;
  top: 0;
  height: 100vh;
  display: flex;
  flex-direction: column;
  padding: var(--space-6) var(--space-4);
  background: rgba(11, 17, 28, 0.85);
  border-right: 1px solid var(--border-subtle);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  z-index: 40;
}

.sidebar .nav {
  margin-top: var(--space-2);
  margin-bottom: var(--space-2);
}

.nav a {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: 0.625rem 0.75rem;
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: var(--space-1);
  transition: background var(--duration-fast) var(--ease-out),
    color var(--duration-fast) var(--ease-out);
  text-decoration: none;
}

.nav a:hover {
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-primary);
  text-decoration: none;
}

.nav a.active {
  background: rgba(59, 130, 246, 0.14);
  color: var(--text-primary);
  box-shadow: inset 0 0 0 1px rgba(96, 165, 250, 0.24);
}

.nav-meta {
  font-size: 0.8125rem;
  color: var(--text-muted);
  margin: 0 0 var(--space-4) var(--space-1);
  line-height: 1.5;
  padding: var(--space-3);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-subtle);
}

.nav-logout {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-top: 0;
  margin-bottom: var(--space-2);
  padding: 0.7rem 0.75rem;
  color: #cbd5e1;
  font-size: 0.875rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  border: 1px solid rgba(239, 68, 68, 0.12);
  background:
    linear-gradient(180deg, rgba(239, 68, 68, 0.07), rgba(239, 68, 68, 0.025)),
    rgba(255, 255, 255, 0.015);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.03);
  transition:
    background var(--duration-fast) var(--ease-out),
    border-color var(--duration-fast) var(--ease-out),
    color var(--duration-fast) var(--ease-out),
    box-shadow var(--duration-normal) var(--ease-out),
    transform var(--duration-fast) var(--ease-out);
  text-decoration: none;
}

.nav-logout::before {
  content: "";
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  opacity: 0.86;
  background: currentColor;
  -webkit-mask: url("data:image/svg+xml,%3Csvg viewBox='0 0 24 24' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M10 6H7.5A2.5 2.5 0 0 0 5 8.5v7A2.5 2.5 0 0 0 7.5 18H10' stroke='black' stroke-width='1.8' stroke-linecap='round'/%3E%3Cpath d='M14 8l4 4-4 4' stroke='black' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'/%3E%3Cpath d='M18 12H9' stroke='black' stroke-width='1.8' stroke-linecap='round'/%3E%3C/svg%3E") center / contain no-repeat;
  mask: url("data:image/svg+xml,%3Csvg viewBox='0 0 24 24' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M10 6H7.5A2.5 2.5 0 0 0 5 8.5v7A2.5 2.5 0 0 0 7.5 18H10' stroke='black' stroke-width='1.8' stroke-linecap='round'/%3E%3Cpath d='M14 8l4 4-4 4' stroke='black' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'/%3E%3Cpath d='M18 12H9' stroke='black' stroke-width='1.8' stroke-linecap='round'/%3E%3C/svg%3E") center / contain no-repeat;
}

.nav-logout:hover {
  background:
    linear-gradient(180deg, rgba(239, 68, 68, 0.105), rgba(239, 68, 68, 0.04)),
    rgba(255, 255, 255, 0.025);
  border-color: rgba(239, 68, 68, 0.2);
  color: var(--text-primary);
  box-shadow: 0 12px 24px rgba(239, 68, 68, 0.06), inset 0 1px 0 rgba(255, 255, 255, 0.04);
  transform: translateY(-1px);
  text-decoration: none;
}

.main {
  padding: var(--space-8) var(--space-10) var(--space-16);
  max-width: calc(var(--content-max) + var(--space-20));
  width: 100%;
}

.mobile-nav-toggle {
  display: none;
  position: fixed;
  top: var(--space-4);
  left: var(--space-4);
  z-index: 50;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-default);
  background: var(--surface-overlay);
  backdrop-filter: blur(8px);
  color: var(--text-primary);
  cursor: pointer;
  align-items: center;
  justify-content: center;
}

.sidebar-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  z-index: 35;
  backdrop-filter: blur(4px);
}

/* Dashboard cards */
.dashboard-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-6);
}

.dashboard-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding: var(--space-6);
  min-height: 200px;
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.04) 0%, transparent 50%), var(--surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  color: inherit;
  text-decoration: none;
  transition: transform var(--duration-normal) var(--ease-out),
    box-shadow var(--duration-normal) var(--ease-out),
    border-color var(--duration-normal) var(--ease-out);
}

.dashboard-card:hover {
  transform: translateY(-3px);
  border-color: rgba(34, 211, 238, 0.25);
  box-shadow: var(--shadow-lg), var(--shadow-glow-cyan);
  text-decoration: none;
}

.dashboard-card-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: var(--brand-cyan-soft);
  color: var(--brand-cyan);
  border: 1px solid rgba(34, 211, 238, 0.15);
}

.dashboard-card h3 {
  margin: 0;
  font-size: 1.125rem;
}

.dashboard-card p {
  margin: 0;
  color: var(--text-secondary);
  font-size: 0.875rem;
  line-height: 1.55;
  flex: 1;
}

.dashboard-card-cta {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--brand-cyan);
}

/* Tables */
table {
  width: 100%;
  border-collapse: collapse;
}

th {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text-muted);
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--border-subtle);
  text-align: left;
}

td {
  padding: var(--space-4);
  border-bottom: 1px solid var(--border-subtle);
  font-size: 0.875rem;
}

.card table td:first-child,
.card table th:first-child {
  padding-left: 0;
}

/* Alerts */
.alert {
  padding: var(--space-4) var(--space-5);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-4);
  font-size: 0.875rem;
  line-height: 1.55;
}

.alert.info {
  background: var(--brand-cyan-soft);
  border: 1px solid rgba(34, 211, 238, 0.2);
  color: var(--text-secondary);
}

.alert.warn {
  background: rgba(245, 158, 11, 0.1);
  border: 1px solid rgba(245, 158, 11, 0.25);
}

.alert.ok {
  background: rgba(34, 197, 94, 0.1);
  border: 1px solid rgba(34, 197, 94, 0.22);
  color: #86efac;
}

.alert.error {
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.22);
  color: #fca5a5;
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.625rem;
  border-radius: 999px;
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.badge.red {
  background: var(--brand-red-soft);
  color: #fca5a5;
  border: 1px solid rgba(239, 68, 68, 0.25);
}

.badge.yellow {
  background: rgba(245, 158, 11, 0.15);
  color: #fcd34d;
}

.badge.green {
  background: rgba(34, 197, 94, 0.15);
  color: #86efac;
}

.badge.neutral {
  background: rgba(148, 163, 184, 0.1);
  color: var(--text-muted);
}

a {
  color: var(--brand-cyan);
  text-decoration: none;
  transition: color var(--duration-fast);
}

a:hover {
  color: #67e8f9;
}

@media (max-width: 960px) {
  .layout {
    grid-template-columns: 1fr;
  }

  .mobile-nav-toggle {
    display: inline-flex;
  }

  .sidebar {
    position: fixed;
    left: 0;
    top: 0;
    transform: translateX(-100%);
    transition: transform var(--duration-normal) var(--ease-out);
    width: min(var(--sidebar-width), 88vw);
    box-shadow: var(--shadow-xl);
  }

  body.nav-open .sidebar {
    transform: translateX(0);
  }

  body.nav-open .sidebar-backdrop {
    display: block;
  }

  .main {
    padding: calc(var(--space-12) + var(--space-4)) var(--space-5) var(--space-10);
  }
}

@media (max-width: 600px) {
  .dashboard-cards {
    grid-template-columns: 1fr;
  }
}