sentinel/frontend/src/styles.css

:root {
  --sentinel-bg: #08131c;
  --sentinel-bg-soft: #102734;
  --sentinel-panel: rgba(252, 255, 255, 0.82);
  --sentinel-panel-strong: rgba(255, 255, 255, 0.9);
  --sentinel-border: rgba(255, 255, 255, 0.24);
  --sentinel-ink: #09161e;
  --sentinel-ink-soft: #57717d;
  --sentinel-accent: #07b093;
  --sentinel-accent-deep: #0d7e8b;
  --sentinel-warn: #ef7f41;
  --sentinel-danger: #dc4f53;
  --sentinel-shadow: 0 30px 80px rgba(2, 12, 18, 0.22);
  --el-color-primary: #0b9e88;
  --el-color-success: #1aa36f;
  --el-color-warning: #ef7f41;
  --el-color-danger: #dc4f53;
  color: var(--sentinel-ink);
  font-family: "Avenir Next", "Segoe UI Variable", "Segoe UI", "PingFang SC", sans-serif;
  line-height: 1.5;
  font-weight: 400;
}

* {
  box-sizing: border-box;
}

*:focus-visible {
  outline: 3px solid rgba(11, 158, 136, 0.34);
  outline-offset: 2px;
}

html {
  min-height: 100%;
  background:
    radial-gradient(circle at top left, rgba(12, 193, 152, 0.22), transparent 34%),
    radial-gradient(circle at top right, rgba(255, 170, 76, 0.18), transparent 30%),
    linear-gradient(180deg, #09131d 0%, #0d1d29 35%, #112d3d 100%);
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--sentinel-ink);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background:
    linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 34px 34px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.5), transparent 95%);
  pointer-events: none;
}

#app {
  min-height: 100vh;
}

.panel {
  background: var(--sentinel-panel);
  border: 1px solid var(--sentinel-border);
  border-radius: 28px;
  backdrop-filter: blur(18px);
  box-shadow: var(--sentinel-shadow);
}

.glass-panel {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.88), rgba(250, 255, 252, 0.74));
}

.eyebrow {
  margin: 0;
  color: var(--sentinel-accent-deep);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 0.74rem;
  font-weight: 700;
}

.muted {
  color: var(--sentinel-ink-soft);
}

.page-grid {
  display: grid;
  gap: 24px;
}

.hero-panel {
  position: relative;
  padding: 26px;
  overflow: hidden;
}

.hero-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(260px, 0.7fr);
  gap: 20px;
  align-items: stretch;
}

.hero-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.hero-description {
  max-width: 60ch;
}

.hero-side {
  display: grid;
  gap: 12px;
  align-content: start;
}

.hero-aside,
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: flex-end;
}

.hero-panel::after {
  content: "";
  position: absolute;
  top: -80px;
  right: -40px;
  width: 220px;
  height: 220px;
  background: radial-gradient(circle, rgba(7, 176, 147, 0.28), transparent 70%);
  pointer-events: none;
}

.hero-panel h3,
.section-title {
  margin: 10px 0 8px;
  font-size: 1.4rem;
}

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

.metric-card {
  position: relative;
  overflow: hidden;
  padding: 20px;
}

.metric-card--enhanced {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.9), rgba(244, 252, 249, 0.78));
}

.metric-card::before {
  content: "";
  position: absolute;
  inset: auto -60px -60px auto;
  width: 140px;
  height: 140px;
  border-radius: 999px;
  background: radial-gradient(circle, rgba(7, 176, 147, 0.16), transparent 70%);
}

.metric-card[data-accent="amber"]::before {
  background: radial-gradient(circle, rgba(239, 127, 65, 0.16), transparent 70%);
}

.metric-card[data-accent="slate"]::before {
  background: radial-gradient(circle, rgba(54, 97, 135, 0.16), transparent 70%);
}

.metric-value {
  margin: 10px 0 0;
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  font-weight: 800;
}

.metric-footnote {
  margin: 10px 0 0;
  color: var(--sentinel-ink-soft);
}

.content-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(320px, 0.9fr);
  gap: 24px;
}

.content-grid--balanced {
  grid-template-columns: minmax(0, 1.1fr) minmax(300px, 0.9fr);
}

.chart-card,
.table-card,
.form-card {
  padding: 24px;
}

.chart-surface {
  width: 100%;
  min-height: 340px;
}

.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  justify-content: space-between;
}

.toolbar-left,
.toolbar-right {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

.data-table .el-table {
  --el-table-border-color: rgba(9, 22, 30, 0.08);
  --el-table-header-bg-color: rgba(7, 176, 147, 0.08);
  --el-table-row-hover-bg-color: rgba(7, 176, 147, 0.05);
  border-radius: 18px;
  overflow: hidden;
}

.soft-grid {
  display: grid;
  gap: 16px;
}

.support-card {
  padding: 20px;
  border-radius: 24px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.82), rgba(243, 251, 248, 0.72));
  border: 1px solid rgba(255, 255, 255, 0.32);
}

.support-card h4 {
  margin: 10px 0 8px;
  font-size: 1.08rem;
}

.support-card p {
  margin: 0;
  color: var(--sentinel-ink-soft);
}

.support-list {
  display: grid;
  gap: 10px;
}

.support-list-item {
  display: grid;
  gap: 4px;
  padding: 12px 0;
  border-top: 1px solid rgba(9, 22, 30, 0.08);
}

.support-list-item:first-child {
  padding-top: 0;
  border-top: 0;
}

.support-kpi {
  display: grid;
  gap: 8px;
}

.support-kpi strong {
  font-size: 1.55rem;
}

.insight-card {
  padding: 18px 20px;
  border-radius: 22px;
  background: linear-gradient(180deg, rgba(8, 31, 45, 0.92), rgba(12, 24, 33, 0.8));
  color: #f2fffd;
}

.insight-value {
  margin: 6px 0 0;
  font-size: 1.65rem;
  font-weight: 800;
}

.insight-note {
  margin: 8px 0 0;
  color: rgba(242, 255, 253, 0.72);
}

.table-stack {
  display: grid;
  gap: 14px;
}

.inline-meta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.login-shell {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 24px;
  padding: 24px;
}

.login-stage,
.login-card {
  position: relative;
  z-index: 1;
}

.login-stage {
  padding: 42px;
  display: flex;
  flex-direction: column;
  gap: 28px;
  justify-content: space-between;
  color: #f7fffe;
  background:
    radial-gradient(circle at top left, rgba(17, 231, 181, 0.24), transparent 28%),
    linear-gradient(160deg, rgba(8, 24, 34, 0.95), rgba(15, 37, 50, 0.92));
}

.login-stage h1 {
  margin: 12px 0;
  font-size: clamp(2.4rem, 4vw, 4rem);
  line-height: 0.96;
}

.login-copy {
  max-width: 520px;
  font-size: 1rem;
  color: rgba(247, 255, 254, 0.78);
}

.login-card {
  display: grid;
  place-items: center;
  padding: 36px;
}

.login-card-inner {
  width: min(100%, 460px);
  padding: 34px;
  background: var(--sentinel-panel-strong);
  border-radius: 32px;
  border: 1px solid var(--sentinel-border);
  box-shadow: var(--sentinel-shadow);
}

.status-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(7, 176, 147, 0.12);
  color: var(--sentinel-accent-deep);
  font-weight: 700;
  font-size: 0.82rem;
}

.status-chip .el-icon {
  flex: 0 0 auto;
}

.stack {
  display: grid;
  gap: 24px;
}

.empty-state {
  padding: 28px;
  text-align: center;
  color: var(--sentinel-ink-soft);
}

.brand-subtitle {
  margin: 6px 0 0;
  color: var(--sentinel-ink-soft);
  font-size: 0.92rem;
}

.rail-grid {
  display: grid;
  gap: 10px;
}

.rail-card {
  display: grid;
  gap: 4px;
  padding: 14px 16px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.44);
  border: 1px solid rgba(255, 255, 255, 0.26);
}

.rail-label,
.header-chip-label {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--sentinel-ink-soft);
}

.rail-meta {
  color: var(--sentinel-ink-soft);
  font-size: 0.86rem;
}

.header-copy {
  display: grid;
  gap: 4px;
}

.header-note {
  margin: 0;
}

.header-chip-group {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.header-chip {
  display: grid;
  gap: 2px;
  min-width: 140px;
  padding: 10px 14px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.56);
  border: 1px solid rgba(255, 255, 255, 0.26);
}

.hero-stat-pair {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.hero-stat {
  padding: 14px 16px;
  border-radius: 20px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.78), rgba(248, 255, 252, 0.64));
  border: 1px solid rgba(255, 255, 255, 0.36);
}

.hero-stat strong {
  display: block;
  margin-top: 6px;
  font-size: 1.35rem;
}

.table-toolbar-block {
  display: grid;
  gap: 8px;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}

@media (max-width: 1180px) {
  .metric-grid,
  .content-grid,
  .login-shell {
    grid-template-columns: 1fr;
  }

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

  .hero-side {
    justify-items: start;
  }

  .hero-aside,
  .hero-actions {
    justify-content: flex-start;
  }
}

@media (max-width: 760px) {
  .metric-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .chart-card,
  .table-card,
  .form-card,
  .hero-panel {
    padding: 18px;
  }
}

@media (max-width: 560px) {
  .metric-grid {
    grid-template-columns: 1fr;
  }

  .login-shell {
    padding: 16px;
  }
}