:root {
  --bg: #f4f7fb;
  --panel: rgba(255, 255, 255, 0.88);
  --panel-strong: #ffffff;
  --panel-border: rgba(15, 23, 42, 0.08);
  --text: #172033;
  --muted: #65728a;
  --accent: #1d4ed8;
  --accent-soft: rgba(29, 78, 216, 0.12);
  --accent-strong: #0f3aa8;
  --success: #0f9f6e;
  --warning: #d97706;
  --danger: #dc2626;
  --shadow: 0 22px 50px rgba(15, 23, 42, 0.10);
  --sidebar-bg: linear-gradient(180deg, #10233d 0%, #0f1d31 100%);
  --sidebar-text: #e8eef9;
  --sidebar-muted: rgba(232, 238, 249, 0.72);
  --sidebar-border: rgba(255, 255, 255, 0.08);
  --surface-soft: rgba(255, 255, 255, 0.78);
  --table-bg: rgba(255, 255, 255, 0.82);
  --table-head: rgba(248, 250, 252, 0.92);
  --table-hover: rgba(239, 246, 255, 0.66);
  --input-bg: #fff;
  --toast-bg: rgba(255, 255, 255, 0.98);
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(29, 78, 216, 0.12), transparent 28rem),
    radial-gradient(circle at bottom right, rgba(15, 159, 110, 0.10), transparent 24rem),
    linear-gradient(180deg, #f8fbff 0%, #eef3f9 100%);
}

a {
  color: inherit;
}

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

.sidebar {
  width: 270px;
  padding: 28px 22px;
  background: var(--sidebar-bg);
  color: var(--sidebar-text);
  border-right: 1px solid var(--sidebar-border);
  position: sticky;
  top: 0;
  height: 100vh;
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 34px;
}

.brand-marker {
  display: grid;
  place-items: center;
  width: 52px;
  height: 52px;
  border-radius: 18px;
  background: linear-gradient(135deg, #60a5fa 0%, #2563eb 100%);
  color: #fff;
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: 0.08em;
  box-shadow: 0 18px 32px rgba(37, 99, 235, 0.35);
}

.brand h1 {
  margin: 0;
  font-size: 1.05rem;
  letter-spacing: 0.18em;
}

.brand p {
  margin: 0.35rem 0 0;
  font-size: 0.88rem;
  color: var(--sidebar-muted);
}

.nav-list {
  display: grid;
  gap: 8px;
}

.nav-item {
  display: flex;
  align-items: center;
  min-height: 46px;
  padding: 0 14px;
  border-radius: 14px;
  color: rgba(232, 238, 249, 0.78);
  text-decoration: none;
  transition: background 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.nav-item:hover,
.nav-item.active {
  background: rgba(255, 255, 255, 0.10);
  color: #ffffff;
  transform: translateX(2px);
}

.sidebar-footer {
  margin-top: auto;
  padding-top: 22px;
  font-size: 0.92rem;
  color: var(--sidebar-muted);
}

.main-panel {
  flex: 1;
  padding: 32px;
}

.header-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 20px;
  margin-bottom: 10px;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.hero-title {
  margin: 0;
  font-size: 2.2rem;
  font-weight: 700;
  letter-spacing: -0.03em;
}

.hero-subtitle {
  margin: 0.8rem 0 0;
  max-width: 760px;
  color: var(--muted);
  line-height: 1.55;
}

.status-chip,
.notification-chip,
.status-pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  font-size: 0.87rem;
  font-weight: 600;
}

.status-chip {
  min-height: 42px;
  padding: 0 16px;
  background: var(--surface-soft);
  border: 1px solid var(--panel-border);
  box-shadow: 0 10px 24px rgba(15, 23, 42, 0.07);
}

.theme-toggle {
  display: none;
}

.notification-chip {
  gap: 10px;
  min-height: 42px;
  padding: 0 14px;
  text-decoration: none;
  color: #8f1d1d;
  background: rgba(254, 226, 226, 0.92);
  border: 1px solid rgba(220, 38, 38, 0.16);
}

.notification-chip strong {
  display: inline-grid;
  place-items: center;
  min-width: 28px;
  height: 28px;
  padding: 0 8px;
  border-radius: 999px;
  background: var(--danger);
  color: #fff;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
  margin-top: 22px;
}

.stat-card,
.panel,
.message-box {
  background: var(--panel);
  backdrop-filter: blur(12px);
  border: 1px solid var(--panel-border);
  box-shadow: var(--shadow);
}

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

.stat-card h2 {
  margin: 0 0 14px;
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  color: var(--muted);
}

.stat-card.alert {
  background: linear-gradient(180deg, rgba(254, 242, 242, 0.96), rgba(255, 255, 255, 0.92));
  border-color: rgba(220, 38, 38, 0.12);
}

.value {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.04em;
}

.desc {
  margin-top: 8px;
  color: var(--muted);
  font-size: 0.95rem;
}

.panel-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(320px, 1fr);
  gap: 18px;
  margin-top: 24px;
}

.panel {
  border-radius: 24px;
  padding: 24px;
}

.panel-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 18px;
}

.panel h3 {
  margin: 0;
  font-size: 1.18rem;
}

.panel-meta {
  margin: 0.35rem 0 0;
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.5;
}

.status-pill {
  min-height: 34px;
  padding: 0 12px;
  border: 1px solid rgba(15, 23, 42, 0.08);
  background: #f8fafc;
  color: #334155;
}

.activity-card {
  padding: 18px;
  border: 1px dashed rgba(100, 116, 139, 0.26);
  border-radius: 18px;
  background: rgba(248, 250, 252, 0.72);
  color: var(--muted);
}

.message-box {
  padding: 16px 18px;
  border-radius: 18px;
  margin: 18px 0 0;
}

.message-success {
  background: rgba(236, 253, 245, 0.92);
  color: #166534;
  border-color: rgba(22, 163, 74, 0.16);
}

.message-error {
  background: rgba(254, 242, 242, 0.94);
  color: #991b1b;
  border-color: rgba(220, 38, 38, 0.16);
}

.form-card {
  display: grid;
  gap: 18px;
  padding: 22px;
  margin-bottom: 20px;
  border-radius: 20px;
  background: linear-gradient(180deg, rgba(248, 250, 252, 0.95), rgba(255, 255, 255, 0.92));
  border: 1px solid rgba(15, 23, 42, 0.08);
}

.form-row {
  display: grid;
  gap: 16px;
}

.form-row label {
  display: grid;
  gap: 8px;
  font-size: 0.95rem;
  color: var(--text);
  font-weight: 600;
}

input[type="text"],
input[type="email"],
input[type="password"],
select,
textarea {
  width: 100%;
  border: 1px solid rgba(148, 163, 184, 0.34);
  border-radius: 16px;
  padding: 13px 14px;
  background: var(--input-bg);
  color: var(--text);
  font: inherit;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="password"]:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: rgba(29, 78, 216, 0.44);
  box-shadow: 0 0 0 4px rgba(29, 78, 216, 0.10);
}

textarea {
  min-height: 116px;
  resize: vertical;
}

.button {
  width: max-content;
  min-height: 44px;
  padding: 0 18px;
  border: none;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-strong) 100%);
  color: #fff;
  font-weight: 700;
  cursor: pointer;
  box-shadow: 0 16px 28px rgba(29, 78, 216, 0.22);
  transition: transform 0.2s ease, box-shadow 0.2s ease, opacity 0.2s ease;
}

.button:hover {
  transform: translateY(-1px);
  box-shadow: 0 18px 34px rgba(29, 78, 216, 0.28);
}

.button-danger {
  background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
  box-shadow: 0 16px 28px rgba(220, 38, 38, 0.18);
}

.inline-form {
  margin: 0;
}

.table-wrap {
  overflow-x: auto;
  border: 1px solid rgba(15, 23, 42, 0.06);
  border-radius: 18px;
}

.table {
  width: 100%;
  border-collapse: collapse;
  background: var(--table-bg);
}

.table th,
.table td {
  padding: 15px 16px;
  border-bottom: 1px solid rgba(15, 23, 42, 0.06);
  text-align: left;
  vertical-align: top;
}

.table th {
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #64748b;
  background: var(--table-head);
}

.table tr:hover {
  background: var(--table-hover);
}

.pill-low {
  background: rgba(226, 232, 240, 0.92);
  color: #334155;
}

.pill-medium {
  background: rgba(254, 243, 199, 0.95);
  color: #92400e;
}

.pill-high {
  background: rgba(220, 252, 231, 0.95);
  color: #166534;
}

.pill-critical {
  background: rgba(254, 226, 226, 0.96);
  color: #991b1b;
}

.action-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.action-card {
  display: block;
  padding: 20px;
  border-radius: 20px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.96), rgba(241, 245, 249, 0.9));
  border: 1px solid rgba(15, 23, 42, 0.08);
  color: var(--text);
  text-decoration: none;
  box-shadow: 0 16px 36px rgba(15, 23, 42, 0.08);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.action-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 22px 42px rgba(15, 23, 42, 0.12);
}

.action-card strong {
  display: block;
  margin-bottom: 8px;
  font-size: 1rem;
}

.toast-stack {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 9999;
  display: grid;
  gap: 12px;
  width: min(360px, calc(100vw - 32px));
  pointer-events: none;
}

.toast {
  pointer-events: auto;
  padding: 16px 18px;
  border-radius: 18px;
  border: 1px solid rgba(220, 38, 38, 0.12);
  background: var(--toast-bg);
  color: var(--text);
  box-shadow: 0 22px 40px rgba(15, 23, 42, 0.14);
  animation: toast-slide-in 0.25s ease;
}

.toast strong {
  display: block;
  margin-bottom: 6px;
}

.toast p {
  margin: 8px 0 0;
  color: var(--muted);
}

.toast-critical {
  border-left: 4px solid var(--danger);
}

.toast-high {
  border-left: 4px solid var(--warning);
}

.toast-medium {
  border-left: 4px solid #d4a017;
}

.toast-low {
  border-left: 4px solid var(--success);
}

.toast-hide {
  opacity: 0;
  transform: translateX(18px);
  transition: opacity 0.3s ease, transform 0.3s ease;
}

.user-card {
  display: grid;
  gap: 4px;
  padding: 14px 16px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.user-card strong {
  font-size: 0.95rem;
}

.user-card span {
  color: var(--sidebar-muted);
  font-size: 0.84rem;
  word-break: break-word;
}

.logout-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  min-height: 42px;
  margin-top: 12px;
  border-radius: 999px;
  text-decoration: none;
  color: #fff;
  background: rgba(220, 38, 38, 0.18);
  border: 1px solid rgba(248, 113, 113, 0.26);
  transition: background 0.2s ease, transform 0.2s ease;
}

.logout-link:hover {
  background: rgba(220, 38, 38, 0.28);
  transform: translateY(-1px);
}

.auth-body {
  display: grid;
  place-items: center;
  padding: 24px;
}

.auth-shell {
  width: min(100%, 1080px);
}

.auth-card {
  width: min(100%, 460px);
  margin: 0 auto;
  padding: 32px;
  border-radius: 30px;
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid var(--panel-border);
  box-shadow: var(--shadow);
  backdrop-filter: blur(12px);
}

.auth-brand {
  display: flex;
  align-items: center;
  gap: 16px;
}

.auth-brand h1 {
  margin: 4px 0 0;
  font-size: 2rem;
  letter-spacing: -0.04em;
}

.auth-eyebrow {
  margin: 0;
  color: var(--accent);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-size: 0.76rem;
  font-weight: 700;
}

.auth-copy {
  margin: 18px 0 22px;
  color: var(--muted);
  line-height: 1.6;
}

.auth-form {
  margin-bottom: 0;
}

.auth-submit {
  width: 100%;
}

.auth-message {
  margin: 0 0 18px;
}

.auth-hint {
  display: grid;
  gap: 6px;
  margin-top: 18px;
  padding: 18px;
  border-radius: 20px;
  background: rgba(239, 246, 255, 0.82);
  border: 1px solid rgba(59, 130, 246, 0.16);
  color: #1e3a8a;
}

@keyframes toast-slide-in {
  from {
    opacity: 0;
    transform: translateX(20px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@media (max-width: 1200px) {
  .stats-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .panel-grid,
  .action-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 960px) {
  .page-shell {
    flex-direction: column;
  }

  .sidebar {
    width: 100%;
    height: auto;
    position: relative;
  }

  .main-panel {
    padding: 24px 18px 30px;
  }
}

@media (max-width: 700px) {
  .header-row,
  .header-actions {
    flex-direction: column;
    align-items: stretch;
  }

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

  .toast-stack {
    left: 16px;
    right: 16px;
    width: auto;
  }
}