/* ═══════════════════════════════════════════════════════════════
   Device 153 — Energy Monitor Dashboard  |  style.css
   ═══════════════════════════════════════════════════════════════ */

/* ── Design tokens ────────────────────────────────────────────── */
:root {
  /* Base */
  --color-bg:            #080c14;
  --color-surface:       #0e1623;
  --color-surface-2:     #131e2e;
  --color-border:        rgba(255,255,255,.07);
  --color-border-strong: rgba(255,255,255,.13);

  /* Text */
  --color-text:          #e2e8f0;
  --color-text-muted:    #64748b;
  --color-text-dim:      #94a3b8;

  /* Accent palette */
  --color-blue:          #3b82f6;
  --color-blue-glow:     rgba(59,130,246,.25);
  --color-blue-soft:     rgba(59,130,246,.12);
  --color-green:         #22c55e;
  --color-green-glow:    rgba(34,197,94,.22);
  --color-green-soft:    rgba(34,197,94,.10);
  --color-amber:         #f59e0b;
  --color-amber-glow:    rgba(245,158,11,.22);
  --color-amber-soft:    rgba(245,158,11,.10);
  --color-red:           #ef4444;
  --color-red-glow:      rgba(239,68,68,.22);
  --color-red-soft:      rgba(239,68,68,.10);
  --color-violet:        #a78bfa;
  --color-violet-glow:   rgba(167,139,250,.22);
  --color-violet-soft:   rgba(167,139,250,.10);

  /* Radius */
  --radius-sm:   8px;
  --radius-md:   14px;
  --radius-lg:   20px;
  --radius-xl:   28px;

  /* Shadow */
  --shadow-card: 0 4px 24px rgba(0,0,0,.45), 0 1px 2px rgba(0,0,0,.3);
  --shadow-glow-blue: 0 0 32px rgba(59,130,246,.15);

  /* Typography */
  --font:        'Inter', system-ui, -apple-system, sans-serif;

  /* Layout */
  --header-h:    72px;
  --max-w:       1360px;
  --gap:         20px;
}

/* ── Reset & base ──────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--color-bg);
  color: var(--color-text);
  min-height: 100dvh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* ── Animated background orbs ─────────────────────────────────── */
.bg-orb {
  position: fixed;
  border-radius: 50%;
  filter: blur(120px);
  pointer-events: none;
  z-index: 0;
  animation: orbDrift 20s ease-in-out infinite alternate;
}
.bg-orb--1 {
  width: 600px; height: 600px;
  top: -200px; left: -150px;
  background: radial-gradient(circle, rgba(59,130,246,.18) 0%, transparent 70%);
  animation-duration: 22s;
}
.bg-orb--2 {
  width: 500px; height: 500px;
  bottom: -150px; right: -100px;
  background: radial-gradient(circle, rgba(167,139,250,.14) 0%, transparent 70%);
  animation-duration: 18s;
  animation-delay: -8s;
}
.bg-orb--3 {
  width: 400px; height: 400px;
  top: 40%; left: 50%;
  transform: translate(-50%,-50%);
  background: radial-gradient(circle, rgba(34,197,94,.08) 0%, transparent 70%);
  animation-duration: 26s;
  animation-delay: -14s;
}
@keyframes orbDrift {
  from { transform: translate(0, 0) scale(1); }
  to   { transform: translate(40px, 30px) scale(1.08); }
}
.bg-orb--3 { animation-name: orbDrift3; }
@keyframes orbDrift3 {
  from { transform: translate(-50%,-50%) scale(1); }
  to   { transform: translate(calc(-50% + 30px), calc(-50% - 20px)) scale(1.06); }
}

/* ── App shell ─────────────────────────────────────────────────── */
.app-shell {
  position: relative;
  z-index: 1;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
}

/* ── Header ───────────────────────────────────────────────────── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 0 clamp(16px, 4vw, 40px);
  background: rgba(8,12,20,.82);
  backdrop-filter: blur(20px) saturate(1.4);
  border-bottom: 1px solid var(--color-border);
  box-shadow: 0 1px 0 rgba(255,255,255,.04);
}

.header-left {
  display: flex;
  align-items: center;
  gap: 14px;
  flex: 1;
  min-width: 0;
}

.logo-mark {
  flex-shrink: 0;
  width: 44px; height: 44px;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(59,130,246,.2), rgba(167,139,250,.2));
  border: 1px solid rgba(255,255,255,.1);
  display: grid;
  place-items: center;
}

.header-titles {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.site-title {
  font-size: clamp(0.9rem, 2vw, 1.1rem);
  font-weight: 700;
  color: var(--color-text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  letter-spacing: -0.01em;
}

.site-subtitle {
  font-size: 0.72rem;
  color: var(--color-text-muted);
  font-weight: 400;
  white-space: nowrap;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.update-badge {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: var(--color-surface-2);
  border: 1px solid var(--color-border-strong);
  border-radius: 999px;
  font-size: 0.75rem;
  color: var(--color-text-dim);
  white-space: nowrap;
}

.update-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--color-green);
  box-shadow: 0 0 8px var(--color-green);
  animation: pulse 2.4s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; box-shadow: 0 0 8px var(--color-green); }
  50%       { opacity: .5; box-shadow: 0 0 3px var(--color-green); }
}

.update-dot--loading { background: var(--color-amber); box-shadow: 0 0 8px var(--color-amber); }
.update-dot--error   { background: var(--color-red);   box-shadow: 0 0 8px var(--color-red); }

.btn-refresh {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  background: linear-gradient(135deg, var(--color-blue), #6366f1);
  color: #fff;
  font-family: var(--font);
  font-size: 0.8rem;
  font-weight: 600;
  border: none;
  border-radius: 999px;
  cursor: pointer;
  transition: opacity .2s, transform .15s, box-shadow .2s;
  box-shadow: 0 4px 18px rgba(59,130,246,.35);
  white-space: nowrap;
}

.btn-refresh:hover  { opacity: .9; transform: translateY(-1px); box-shadow: 0 6px 24px rgba(59,130,246,.45); }
.btn-refresh:active { transform: translateY(0); }

.download-controls a.is-downloading { opacity: .55; pointer-events: none; }

.btn-refresh__icon { flex-shrink: 0; }
.btn-refresh__icon--spinning { animation: spin .7s linear infinite; }

@keyframes spin { to { transform: rotate(360deg); } }

/* ── Status overlays ──────────────────────────────────────────── */
.status-overlay {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 20px;
  flex: 1;
  padding: 80px 24px;
  text-align: center;
}

.status-overlay--error { gap: 14px; }

.status-overlay__text {
  font-size: 1rem;
  color: var(--color-text-dim);
}

.error-icon { font-size: 3rem; filter: grayscale(.5); }

/* ── Spinner ──────────────────────────────────────────────────── */
.spinner {
  width: 48px; height: 48px;
  border: 3px solid var(--color-border-strong);
  border-top-color: var(--color-blue);
  border-radius: 50%;
  animation: spin .8s linear infinite;
}

/* ── Utility ──────────────────────────────────────────────────── */
.hidden { display: none !important; }

.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;
}

/* ── Main content ─────────────────────────────────────────────── */
.main-content {
  flex: 1;
  padding: clamp(20px, 4vw, 36px) clamp(16px, 4vw, 40px);
  max-width: var(--max-w);
  width: 100%;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--gap);
}

/* ── Card base ────────────────────────────────────────────────── */
.card {
  background: linear-gradient(135deg, var(--color-surface) 0%, var(--color-surface-2) 100%);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  backdrop-filter: blur(8px);
  transition: box-shadow .3s;
}

.card:hover { box-shadow: var(--shadow-card), var(--shadow-glow-blue); }

/* ── KPI grid ─────────────────────────────────────────────────── */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--gap);
}

.kpi-card {
  padding: 24px 20px;
  display: flex;
  align-items: flex-start;
  gap: 16px;
  position: relative;
  overflow: hidden;
}

.kpi-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: linear-gradient(135deg, rgba(255,255,255,.03), transparent);
  pointer-events: none;
}

.kpi-card__icon {
  flex-shrink: 0;
  width: 48px; height: 48px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  transition: transform .2s;
}
.kpi-card:hover .kpi-card__icon { transform: scale(1.08); }

.kpi-card__icon--blue   { background: var(--color-blue-soft);   color: var(--color-blue);   box-shadow: 0 0 18px var(--color-blue-glow); }
.kpi-card__icon--green  { background: var(--color-green-soft);  color: var(--color-green);  box-shadow: 0 0 18px var(--color-green-glow); }
.kpi-card__icon--amber  { background: var(--color-amber-soft);  color: var(--color-amber);  box-shadow: 0 0 18px var(--color-amber-glow); }
.kpi-card__icon--violet { background: var(--color-violet-soft); color: var(--color-violet); box-shadow: 0 0 18px var(--color-violet-glow); }

.kpi-card__body {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 0;
}

.kpi-card__label {
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--color-text-muted);
}

.kpi-card__value {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 800;
  color: var(--color-text);
  line-height: 1.1;
  letter-spacing: -0.03em;
  word-break: break-all;
}

.kpi-card__value--status {
  font-size: clamp(0.95rem, 2vw, 1.15rem);
  font-weight: 700;
  letter-spacing: 0;
}

.status--normal  { color: var(--color-green); }
.status--anomaly { color: var(--color-red); }
.status--waiting { color: var(--color-amber); }

.kpi-card__unit {
  font-size: 0.72rem;
  color: var(--color-text-muted);
  font-weight: 500;
}

/* ── Anomaly strip ────────────────────────────────────────────── */
.anomaly-strip {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 20px 32px;
  padding: 20px 28px;
}

.anomaly-strip__group {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.anomaly-strip__label {
  font-size: 0.68rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .07em;
  color: var(--color-text-muted);
}

.anomaly-strip__value {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-text);
}

.anomaly-strip__divider {
  width: 1px;
  height: 36px;
  background: var(--color-border-strong);
  flex-shrink: 0;
}

/* Score progress bar */
.anomaly-bar-wrap {
  flex: 1 1 260px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.anomaly-bar-track {
  position: relative;
  height: 8px;
  background: rgba(255,255,255,.07);
  border-radius: 999px;
  overflow: visible;
}

.anomaly-bar-fill {
  position: absolute;
  left: 0; top: 0; bottom: 0;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--color-blue), var(--color-violet));
  width: 0%;
  transition: width .8s cubic-bezier(.4,0,.2,1);
}

.anomaly-bar-fill--danger {
  background: linear-gradient(90deg, var(--color-amber), var(--color-red));
}

.anomaly-bar-threshold {
  position: absolute;
  top: -4px; bottom: -4px;
  width: 2px;
  background: var(--color-amber);
  border-radius: 1px;
  box-shadow: 0 0 8px var(--color-amber-glow);
  left: 60%;
  transition: left .8s cubic-bezier(.4,0,.2,1);
}

.anomaly-bar-labels {
  display: flex;
  justify-content: space-between;
  font-size: 0.65rem;
  color: var(--color-text-muted);
}

/* ── Chart section ────────────────────────────────────────────── */
.chart-section {
  padding: 28px;
}

.chart-section__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 24px;
}

.section-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.01em;
}

.chart-legend {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 0.75rem;
  color: var(--color-text-dim);
}

.legend-dot {
  display: inline-block;
  width: 10px; height: 10px;
  border-radius: 50%;
}

.legend-dot--predicted { background: var(--color-blue); box-shadow: 0 0 6px var(--color-blue-glow); }
.legend-dot--actual    { background: var(--color-green); box-shadow: 0 0 6px var(--color-green-glow); }
.legend-dot--error     { background: var(--color-amber); box-shadow: 0 0 6px var(--color-amber-glow); }
.legend-dot--baseline  { background: #a78bfa; box-shadow: 0 0 6px rgba(167,139,250,0.5); }

.chart-wrap {
  position: relative;
  width: 100%;
  height: clamp(240px, 35vw, 380px);
}

.chart-wrap canvas { width: 100% !important; height: 100% !important; }

/* ── Table section ────────────────────────────────────────────── */
.table-section {
  padding: 28px;
}

.table-section__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 20px;
}

.no-actual-note {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.75rem;
  color: var(--color-amber);
  background: var(--color-amber-soft);
  border: 1px solid rgba(245,158,11,.25);
  padding: 5px 12px;
  border-radius: 999px;
}

.table-wrap {
  width: 100%;
  overflow-x: auto;
  border-radius: var(--radius-md);
  scrollbar-width: thin;
  scrollbar-color: var(--color-border-strong) transparent;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.84rem;
}

thead tr {
  background: rgba(255,255,255,.04);
}

th {
  padding: 13px 18px;
  text-align: left;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .07em;
  color: var(--color-text-muted);
  border-bottom: 1px solid var(--color-border-strong);
  white-space: nowrap;
}

td {
  padding: 11px 18px;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text-dim);
  white-space: nowrap;
}

td:first-child { color: var(--color-text); font-weight: 600; }

tbody tr:last-child td { border-bottom: none; }

tbody tr {
  transition: background .15s;
}

tbody tr:hover {
  background: rgba(255,255,255,.03);
}

.td-predicted { color: var(--color-blue) !important; font-weight: 600; }
.td-actual    { color: var(--color-green) !important; font-weight: 600; }
.td-error     { color: var(--color-amber) !important; font-weight: 600; }
.td-na        { color: var(--color-text-muted) !important; font-style: italic; }

/* ── Footer ───────────────────────────────────────────────────── */
.site-footer {
  padding: 20px clamp(16px, 4vw, 40px);
  border-top: 1px solid var(--color-border);
  font-size: 0.72rem;
  color: var(--color-text-muted);
  text-align: center;
}

/* ── Responsive breakpoints ───────────────────────────────────── */
@media (max-width: 800px) {
  .kpi-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 700px) {
  :root { --header-h: auto; }

  .site-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
    padding: 16px;
    height: auto;
  }

  .header-right {
    width: 100%;
    justify-content: space-between;
  }

  .update-badge { font-size: 0.7rem; padding: 5px 10px; }

  .kpi-grid { grid-template-columns: 1fr 1fr; gap: 12px; }

  .kpi-card { padding: 18px 14px; gap: 10px; }

  .kpi-card__icon { width: 40px; height: 40px; }

  .anomaly-strip {
    gap: 14px 20px;
    padding: 16px 18px;
  }

  .anomaly-strip__divider { display: none; }

  .chart-section, .table-section { padding: 20px 16px; }

  th, td { padding: 10px 12px; }
}

@media (max-width: 400px) {
  .kpi-grid { grid-template-columns: 1fr; }
}

/* ── Fade-in animation for main content ───────────────────────── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

.main-content:not(.hidden) {
  animation: fadeUp .5s ease both;
}