/* ==============================
   Základní nastavení a motiv
   ============================== */

:root {
  --color-bg: #0f172a;
  --color-bg-elevated: #111827;
  --color-bg-soft: #1f2937;
  --color-border: rgba(148, 163, 184, 0.4);
  --color-text: #e5e7eb;
  --color-text-muted: #9ca3af;
  --color-primary: #4f46e5;
  --color-primary-soft: rgba(79, 70, 229, 0.16);
  --color-primary-strong: #4338ca;
  --color-danger: #ef4444;
  --color-success: #22c55e;
  --shadow-soft: 0 18px 45px rgba(15, 23, 42, 0.45);
}

.theme-light {
  --color-bg: #f3f4f6;
  --color-bg-elevated: #ffffff;
  --color-bg-soft: #e5e7eb;
  --color-border: rgba(148, 163, 184, 0.4);
  --color-text: #111827;
  --color-text-muted: #6b7280;
  --color-primary: #4f46e5;
  --color-primary-soft: rgba(79, 70, 229, 0.1);
  --color-primary-strong: #4338ca;
  --color-danger: #b91c1c;
  --color-success: #16a34a;
  --shadow-soft: 0 18px 45px rgba(15, 23, 42, 0.15);
}

.theme-dark {
  --color-bg: #020617;
  --color-bg-elevated: #020617;
  --color-bg-soft: #020617;
  --color-border: rgba(148, 163, 184, 0.35);
  --color-text: #e5e7eb;
  --color-text-muted: #9ca3af;
}

/* Reset / základ */

*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--color-text);
  background: radial-gradient(circle at top, #1e293b 0, var(--color-bg) 45%, #020617 100%);
}

/* ==============================
   Auth stránka (login)
   ============================== */

.auth-page {
  display: flex;
  align-items: center;
  justify-content: center;
}

.auth-wrapper {
  width: 100%;
  max-width: 440px;
  padding: 2rem;
}

.auth-card {
  background: radial-gradient(circle at top left, rgba(56, 189, 248, 0.2), transparent 36%),
              radial-gradient(circle at top right, rgba(79, 70, 229, 0.35), transparent 46%),
              var(--color-bg-elevated);
  border-radius: 1.5rem;
  border: 1px solid rgba(148, 163, 184, 0.35);
  padding: 2.25rem 2rem 1.5rem;
  box-shadow: var(--shadow-soft);
  backdrop-filter: blur(18px);
}

.auth-logo {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  padding: 0.35rem 0.9rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  font-size: 0.95rem;
  background: rgba(15, 23, 42, 0.85);
  border: 1px solid rgba(148, 163, 184, 0.5);
  color: #f9fafb;
  margin-bottom: 1.1rem;
}

.auth-card h1 {
  font-size: 1.5rem;
  margin-bottom: 0.25rem;
}

.auth-subtitle {
  margin: 0 0 1.75rem;
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

.auth-footer {
  margin: 1.75rem 0 0;
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

/* Bootstrap overrides */

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary) 0, var(--color-primary-strong) 100%);
  border: none;
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--color-primary-strong) 0, var(--color-primary) 100%);
}

.btn-light.btn-icon {
  background: rgba(15, 23, 42, 0.04);
  border: 1px solid rgba(148, 163, 184, 0.45);
  font-size: 1.1rem;
  padding-inline: 0.75rem;
}

/* ==============================
   Shell layout (sidebar + main)
   ============================== */

.app-shell {
  display: flex;
  min-height: 100vh;
}

/* Sidebar */

.sidebar {
  width: 260px;
  background:
    radial-gradient(circle at top left, rgba(56, 189, 248, 0.2), transparent 45%),
    radial-gradient(circle at bottom right, rgba(34, 197, 94, 0.18), transparent 55%),
    radial-gradient(circle at top right, rgba(37, 99, 235, 0.4), transparent 55%),
    #020617;
  color: #e5e7eb;
  padding: 1.25rem 1.25rem 1rem;
  display: flex;
  flex-direction: column;
  border-right: 1px solid rgba(148, 163, 184, 0.35);
}

.sidebar-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.75rem;
}

.sidebar-logo {
  width: 40px;
  height: 40px;
  border-radius: 999px;
  background: rgba(15, 23, 42, 0.8);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 10px 25px rgba(15, 23, 42, 0.55);
  font-size: 1.35rem;
}

.brand-name {
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-size: 0.8rem;
}

.brand-subtitle {
  display: block;
  font-size: 0.72rem;
  color: rgba(209, 213, 219, 0.85);
}

.sidebar-nav {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.sidebar-link {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.55rem 0.7rem;
  border-radius: 0.75rem;
  color: rgba(209, 213, 219, 0.92);
  text-decoration: none;
  font-size: 0.9rem;
}

.sidebar-link .icon {
  width: 1.4rem;
  display: inline-flex;
  justify-content: center;
}

.sidebar-link:hover {
  background: rgba(15, 23, 42, 0.75);
}

.sidebar-link.active {
  background: linear-gradient(135deg, rgba(56, 189, 248, 0.22), rgba(59, 130, 246, 0.28));
  color: #f9fafb;
}

.sidebar-footer {
  margin-top: 1.25rem;
  border-top: 1px solid rgba(148, 163, 184, 0.35);
  padding-top: 1rem;
}

.sidebar-user {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
}

.user-avatar {
  width: 32px;
  height: 32px;
  border-radius: 999px;
  background: rgba(15, 23, 42, 0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
}

.user-name {
  font-weight: 500;
  font-size: 0.9rem;
}

.user-role {
  font-size: 0.75rem;
  color: rgba(209, 213, 219, 0.8);
}

/* Main content */

.main-content {
  flex: 1;
  padding: 1.75rem 2rem;
  background:
    radial-gradient(circle at top, rgba(59, 130, 246, 0.22), transparent 50%),
    radial-gradient(circle at bottom left, rgba(56, 189, 248, 0.12), transparent 55%),
    var(--color-bg);
}

/* Page header */

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

.page-title {
  font-size: 1.4rem;
  margin-bottom: 0.25rem;
}

.page-subtitle {
  margin: 0;
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

.page-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

/* Cards & stat grid */

.card {
  border-radius: 1rem;
  border: 1px solid var(--color-border);
  background-color: rgba(15, 23, 42, 0.92);
  box-shadow: 0 16px 44px rgba(15, 23, 42, 0.45);
}

.theme-light .card {
  background-color: var(--color-bg-elevated);
  box-shadow: 0 16px 35px rgba(15, 23, 42, 0.1);
}

.card-title {
  font-size: 1.05rem;
  margin-bottom: 0.15rem;
}

.card-subtitle {
  font-size: 0.85rem;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.9rem;
}

.stat-card {
  border-radius: 0.9rem;
  padding: 0.85rem 0.9rem;
  background: linear-gradient(135deg, rgba(15, 23, 42, 0.88), rgba(15, 23, 42, 0.96));
  border: 1px solid rgba(148, 163, 184, 0.35);
}

.theme-light .stat-card {
  background: linear-gradient(135deg, #eef2ff, #e0f2fe);
}

.stat-label {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-bottom: 0.15rem;
}

.stat-value {
  font-size: 1.35rem;
  font-weight: 600;
}

/* VM tabulka */

.vm-table thead {
  background: linear-gradient(to right, rgba(15, 23, 42, 0.95), rgba(15, 23, 42, 0.9));
}

.theme-light .vm-table thead {
  background: linear-gradient(to right, #e5e7eb, #e0e7ff);
}

.vm-table thead th {
  border-bottom-width: 0;
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
}

.vm-table tbody tr + tr {
  border-top: 1px solid rgba(148, 163, 184, 0.25);
}

.vm-name {
  font-weight: 500;
}

.vm-id {
  font-size: 0.75rem;
}

/* Nastavení stránka */

.settings-card {
  margin-bottom: 1rem;
}

.theme-preview {
  display: flex;
  gap: 0.4rem;
}

.theme-preview-light,
.theme-preview-dark {
  flex: 1;
  height: 34px;
  border-radius: 0.55rem;
  border: 1px solid rgba(148, 163, 184, 0.7);
}

.theme-preview-light {
  background: linear-gradient(135deg, #ffffff, #e5e7eb);
}

.theme-preview-dark {
  background: radial-gradient(circle at top, #1e293b 0, #020617 48%, #020617 100%);
}

/* Responsivita */

@media (max-width: 992px) {
  .sidebar {
    display: none;
  }

  .main-content {
    padding: 1.25rem 1.2rem 1.75rem;
  }

  .page-header {
    flex-direction: column;
  }

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

@media (max-width: 576px) {
  .auth-card {
    padding-inline: 1.5rem;
  }

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

  .page-actions {
    width: 100%;
    justify-content: flex-start;
    flex-wrap: wrap;
  }

  .page-actions .btn {
    flex: 1 1 auto;
  }
}