/* ═══════════════════════════════════════════════════════════════════
   ASSL Final Dashboard — Unified Stylesheet
   Visily-inspired dark technical dashboard system
═══════════════════════════════════════════════════════════════════ */

/* ── Google Fonts are loaded via <link> in each HTML file ── */

/* ── CSS Custom Properties ── */
:root {
  --app-bg: #050d18;
  --app-bg-secondary: #09111d;
  --surface: #0d1b2b;
  --surface-raised: #102238;
  --surface-hover: #132b44;

  --border: #1b3650;
  --border-strong: #24505a;

  --text-primary: #e6f1ff;
  --text-secondary: #aab4c8;
  --text-muted: #71829b;

  --accent-cyan: #22d3ee;
  --accent-cyan-strong: #00d9ff;
  --accent-green: #2cff9a;
  --accent-green-soft: #238e69;
  --accent-purple: #b48cff;
  --accent-blue: #1f6591;
  --accent-warning: #f5b84b;
  --accent-danger: #ff5c7a;

  --accent-cyan-rgb: 34, 211, 238;
  --accent-green-rgb: 44, 255, 154;
  --accent-purple-rgb: 180, 140, 255;
  --accent-warning-rgb: 245, 184, 75;
  --accent-danger-rgb: 255, 92, 122;
  --surface-rgb: 13, 27, 43;
  --surface-raised-rgb: 16, 34, 56;

  --shadow-soft: 0 12px 32px rgba(0, 0, 0, 0.35);
  --shadow-cyan: 0 0 24px rgba(var(--accent-cyan-rgb), 0.24);
  --shadow-green: 0 0 24px rgba(var(--accent-green-rgb), 0.18);

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-xl: 24px;

  /* Backward-compatible aliases used by the existing pages */
  --bg: var(--app-bg);
  --bg-2: var(--app-bg-secondary);
  --bg-surface: rgba(var(--surface-rgb), 0.94);
  --bg-card: rgba(var(--surface-raised-rgb), 0.86);
  --bg-input: rgba(5, 13, 24, 0.78);
  --panel: rgba(var(--surface-rgb), 0.95);
  --panel-strong: rgba(var(--surface-raised-rgb), 0.98);
  --success: var(--accent-green);
  --green: var(--accent-green);
  --cyan: var(--accent-cyan);
  --blue: var(--accent-blue);
  --purple: var(--accent-purple);
  --orange: var(--accent-warning);
  --danger: var(--accent-danger);
  --red: var(--accent-danger);
  --yellow: var(--accent-warning);
  --solar: var(--accent-warning);
  --wind: var(--accent-cyan);
  --hydro: var(--accent-green);
  --batt: var(--accent-purple);
  --load: var(--accent-warning);
  --shadow: var(--shadow-soft);
  --radius: var(--radius-md);
  --surface-card: var(--bg-card);
  --surface-strong: var(--panel-strong);
  --text:           var(--text-primary);
  --text-soft:      var(--text-secondary);
  --radius-card:    var(--radius-md);
  --radius-button:  var(--radius-sm);
  --shadow-card:    var(--shadow-soft);

  /* Typography */
  --font-sans: Inter, 'Segoe UI', system-ui, sans-serif;
  --font-mono: 'Roboto Mono', 'Cascadia Mono', Consolas, monospace;
  --font-orbitron: Orbitron, 'Roboto Mono', monospace;
}

/* Light mode */
body.light-mode {
  color-scheme: light;
  --app-bg: #e9f2fb;
  --app-bg-secondary: #f7fbff;
  --surface: #ffffff;
  --surface-raised: #f3f8ff;
  --surface-hover: #e8f3ff;
  --bg: var(--app-bg);
  --bg-2: var(--app-bg-secondary);
  --bg-surface: rgba(255,255,255,0.9);
  --bg-card: rgba(255,255,255,0.82);
  --bg-input: rgba(230,240,252,0.86);
  --panel: rgba(255,255,255,0.94);
  --panel-strong: rgba(247,251,255,0.98);
  --border: #bfd0df;
  --border-strong: #86a7bd;
  --text-primary: #0b1b2c;
  --text-secondary: #52687c;
  --text-muted: #71829b;
  --surface-card: var(--bg-card);
  --surface-strong: var(--panel-strong);
  --text: var(--text-primary);
  --text-soft: var(--text-secondary);
  --shadow: 0 12px 32px rgba(44,67,92,0.16);
  --shadow-card: var(--shadow);
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; color-scheme: dark; }
body {
  font-family: var(--font-sans);
  font-size: 14px;
  color: var(--text-primary);
  background:
    radial-gradient(circle at 12% -10%, rgba(var(--accent-cyan-rgb),0.13), transparent 30rem),
    radial-gradient(circle at 88% 0%, rgba(var(--accent-purple-rgb),0.08), transparent 26rem),
    linear-gradient(135deg, var(--app-bg), #071323 48%, var(--app-bg-secondary));
  min-height: 100vh;
  overflow-x: hidden;
  background-attachment: fixed;
}
button, input, select { font: inherit; color: inherit; }
a { text-decoration: none; color: inherit; }
svg { display: block; }

/* ── HEADER ── */
.top-header {
  position: sticky; top: 0; z-index: 20;
  display: grid; grid-template-columns: auto 1fr auto;
  align-items: center; gap: 16px;
  min-height: 72px; padding: 10px 20px;
  border-bottom: 1px solid var(--border);
  background: linear-gradient(135deg, rgba(9,17,29,0.96), rgba(13,27,43,0.94));
  box-shadow: var(--shadow-soft);
  backdrop-filter: blur(18px);
}
body.light-mode .top-header { background: rgba(255,255,255,0.94); }

/* Logo block */
.header-left { display: flex; align-items: center; gap: 14px; }
.logo-block   { display: flex; align-items: center; gap: 12px; }
.logo-icon {
  width: 46px; height: 46px;
  display: grid; place-items: center;
  border: 1px solid rgba(var(--accent-green-rgb),0.42); border-radius: var(--radius-md);
  background: linear-gradient(145deg, rgba(var(--accent-green-rgb),0.16), rgba(var(--accent-cyan-rgb),0.09));
  box-shadow: inset 0 0 18px rgba(var(--accent-green-rgb),0.12), var(--shadow-green);
  flex-shrink: 0;
}
.logo-icon svg { width: 36px; height: 36px; }
.logo-text { display: flex; flex-direction: column; }
.project-title {
  font-family: var(--font-orbitron);
  font-size: clamp(14px,1.8vw,20px); font-weight: 800;
  letter-spacing: 0.06em; color: var(--cyan);
}
.project-subtitle { font-size: 11px; color: var(--text-muted); margin-top: 1px; }
.header-divider { width: 1px; height: 36px; background: var(--border); flex-shrink: 0; }
.dashboard-label { display: flex; flex-direction: column; gap: 1px; }
.dash-tag {
  font-family: var(--font-mono); font-size: 10px; font-weight: 700;
  letter-spacing: 0.12em; color: var(--cyan); text-transform: uppercase;
}
.dash-subtitle { font-size: 11px; color: var(--text-muted); }

/* Header center */
.header-center { display: flex; justify-content: center; }
.system-status-badge {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 16px; border-radius: 999px;
  border: 1px solid rgba(var(--accent-green-rgb),0.32);
  background: rgba(var(--surface-rgb),0.72);
  font-family: var(--font-mono); font-size: 11px; font-weight: 700;
  letter-spacing: 0.08em; text-transform: uppercase; color: var(--green);
}
.system-status-badge.fault { border-color: rgba(var(--accent-danger-rgb),0.44); color: var(--red); }

/* Header right */
.header-right { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; justify-content: flex-end; }
.time-block { display: flex; flex-direction: column; gap: 1px; min-width: 70px; }
.time-value { font-family: var(--font-mono); font-size: 14px; font-weight: 700; }
.time-label { font-size: 9px; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; color: var(--text-muted); }
.update-block { display: flex; flex-direction: column; gap: 1px; }
.update-value { display: flex; align-items: center; gap: 5px; font-family: var(--font-mono); font-size: 14px; font-weight: 700; }
.update-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--green); box-shadow: 0 0 12px var(--green); animation: pulse 2s ease-in-out infinite; }
.connection-badges { display: flex; gap: 6px; }
.badge {
  padding: 4px 10px; border-radius: 999px;
  font-family: var(--font-mono); font-size: 10px; font-weight: 700; letter-spacing: 0.08em;
  border: 1px solid var(--border);
}
.badge-online { border-color: rgba(var(--accent-green-rgb),0.4); color: var(--green); background: rgba(var(--accent-green-rgb),0.08); box-shadow: var(--shadow-green); }
.badge-synced { border-color: rgba(var(--accent-cyan-rgb),0.35); color: var(--cyan); background: rgba(var(--accent-cyan-rgb),0.08); box-shadow: var(--shadow-cyan); }
.theme-toggle {
  display: grid; place-items: center;
  width: 38px; height: 38px;
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  background: rgba(var(--surface-rgb),0.72); color: var(--text-secondary); cursor: pointer;
  transition: 160ms ease;
}
.theme-toggle:hover { border-color: var(--accent-cyan); color: var(--cyan); box-shadow: var(--shadow-cyan); }
.theme-toggle svg { width: 18px; height: 18px; }

/* Animations */
@keyframes pulse { 50% { opacity: 0.4; } }
@keyframes blink { 50% { opacity: 0.3; } }
@keyframes flowPulse { to { stroke-dashoffset: -44; } }
@keyframes shimmer { 50% { opacity: 0.35; } }
@keyframes riseIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ── NAV BAR ── */
.page-nav {
  display: flex; align-items: center; gap: 2px;
  padding: 6px 16px;
  border-bottom: 1px solid var(--border);
  background: rgba(5,13,24,0.88);
  overflow-x: auto; scrollbar-width: none;
  backdrop-filter: blur(12px);
}
.page-nav::-webkit-scrollbar { display: none; }
.nav-link {
  display: inline-flex; align-items: center; gap: 6px;
  min-height: 36px; padding: 0 14px;
  border: 1px solid transparent; border-radius: var(--radius-sm);
  background: transparent; color: var(--text-secondary);
  font-size: 13px; font-weight: 500; white-space: nowrap;
  transition: 160ms ease; cursor: pointer;
}
.nav-link:hover { color: var(--text-primary); background: var(--surface-hover); border-color: var(--border); }
.nav-link.active {
  color: var(--accent-cyan-strong); background: var(--surface-raised);
  border-color: rgba(var(--accent-cyan-rgb),0.45);
  border-bottom: 2px solid var(--cyan);
  box-shadow: var(--shadow-cyan);
}
.nav-icon { font-size: 14px; }

/* ── ALERT BANNER ── */
.alert-banner {
  display: flex; align-items: center; justify-content: space-between;
  gap: 12px; padding: 10px 20px;
  border-bottom: 1px solid rgba(var(--accent-danger-rgb),0.4);
  background: rgba(var(--accent-danger-rgb),0.1); color: var(--red);
  font-family: var(--font-mono); font-size: 12px;
}
.alert-close { background: none; border: none; color: var(--red); cursor: pointer; font-size: 16px; }

/* ── PAGE CONTENT WRAPPER ── */
.page-content {
  max-width: 1800px; margin: 0 auto;
  padding: 18px 20px 32px;
}

.page-hero {
  display: flex; align-items: flex-end; justify-content: space-between; gap: 16px;
  margin-bottom: 16px; padding: 18px 20px;
  border: 1px solid var(--border); border-radius: var(--radius-lg);
  background: linear-gradient(180deg, rgba(var(--accent-cyan-rgb),0.055), transparent 38%), var(--surface);
  box-shadow: var(--shadow-card);
}
.page-hero-copy { min-width: 0; }
.page-hero-title {
  margin-bottom: 4px;
  font-size: clamp(22px, 2.1vw, 34px);
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--text-primary);
}
.page-hero-subtitle {
  max-width: 72ch;
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.5;
}
.page-hero-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  min-width: min(520px, 100%);
}
.hero-metric {
  min-width: 0;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--surface-raised);
  box-shadow: inset 0 0 0 1px rgba(var(--accent-cyan-rgb),0.035);
}
.hero-metric-label {
  margin-bottom: 5px;
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
}
.hero-metric-value {
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 700;
  line-height: 1;
}
.hero-metric-sub {
  margin-top: 4px;
  font-size: 11px;
  color: var(--text-muted);
}

.device-page-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(360px, 0.72fr);
  gap: 16px;
  align-items: start;
  margin-bottom: 18px;
}
.device-stack {
  display: grid;
  gap: 12px;
}
.device-list {
  display: grid;
  gap: 8px;
  padding: 14px;
}
.device-row {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 10px;
  align-items: center;
  padding: 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--surface-raised);
}
.device-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 16px rgba(var(--accent-green-rgb),0.55);
}
.device-name {
  font-weight: 700;
  color: var(--text-primary);
}
.device-meta {
  margin-top: 2px;
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-muted);
}
.device-value {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  color: var(--cyan);
  text-align: right;
}
.screen-library-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  margin-top: 18px;
}
.screen-card {
  display: block;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--surface);
  box-shadow: var(--shadow-card);
  transition: border-color 160ms ease, transform 160ms ease;
}
.screen-card:hover {
  border-color: var(--border-strong);
  transform: translateY(-2px);
}
.screen-card-thumb {
  display: block;
  height: 180px;
  overflow: hidden;
  background: var(--app-bg);
  border-bottom: 1px solid var(--border);
}
.screen-card-thumb img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
}
.screen-card-body {
  display: block;
  padding: 11px 12px 13px;
}
.screen-card-title {
  display: block;
  font-size: 13px;
  font-weight: 800;
  color: var(--text-primary);
}
.screen-card-sub {
  display: block;
  margin-top: 4px;
  font-size: 11px;
  line-height: 1.45;
  color: var(--text-muted);
}

.hero-section,
.stat-card,
.card,
.chart-wrap,
.ns-card,
.screen-card {
  animation: riseIn 260ms ease-out both;
}

/* ── STAT GRID ── */
.stat-grid {
  display: grid; gap: 10px;
  grid-template-columns: repeat(6, minmax(0,1fr));
}
.stat-grid-4 { grid-template-columns: repeat(4, minmax(0,1fr)); }
.stat-grid-5 { grid-template-columns: repeat(5, minmax(0,1fr)); }
.stat-card {
  padding: 14px 16px;
  border: 1px solid var(--border); border-radius: var(--radius-md);
  background: var(--surface-raised);
  transition: border-color 160ms ease, transform 160ms ease; cursor: default;
}
.stat-card:hover { border-color: var(--border-strong); transform: translateY(-1px); box-shadow: var(--shadow-cyan); }
.stat-icon { font-size: 20px; display: block; margin-bottom: 8px; }
.stat-label { font-size: 10px; font-weight: 700; letter-spacing: 0.12em; text-transform: uppercase; color: var(--text-muted); margin-bottom: 6px; }
.stat-value { font-family: var(--font-mono); font-size: clamp(22px,2.4vw,32px); font-weight: 700; line-height: 1; }
.stat-sub   { font-size: 11px; color: var(--text-muted); margin-top: 4px; }

/* Stat card accent colors */
.stat-card.solar  { border-left: 2px solid var(--solar); }
.stat-card.wind   { border-left: 2px solid var(--wind); }
.stat-card.hydro  { border-left: 2px solid var(--hydro); }
.stat-card.batt   { border-left: 2px solid var(--batt); }
.stat-card.load   { border-left: 2px solid var(--load); }
.stat-card.success{ border-left: 2px solid var(--green); }
.c-solar  { color: var(--solar); }
.c-wind   { color: var(--cyan); }
.c-hydro  { color: var(--hydro); }
.c-batt   { color: var(--batt); }
.c-load   { color: var(--load); }
.c-green  { color: var(--green); }
.c-danger { color: var(--red); }

/* ── CARD ── */
.card {
  border: 1px solid var(--border); border-radius: var(--radius-md);
  background: linear-gradient(180deg, rgba(var(--accent-cyan-rgb),0.035), transparent 34%), var(--surface);
  box-shadow: var(--shadow-card);
}
.table-card { overflow-x: auto; }
body.light-mode .card { background: rgba(255,255,255,0.74); }
.card-header {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  min-height: 48px; padding: 10px 14px;
  border-bottom: 1px solid var(--border);
  background: rgba(var(--surface-raised-rgb),0.42);
}
.card-title { font-size: 13px; font-weight: 700; }
.card-badge {
  padding: 3px 9px; border-radius: 999px; font-family: var(--font-mono);
  font-size: 10px; font-weight: 700; letter-spacing: 0.06em;
  background: rgba(var(--accent-green-rgb),0.1); color: var(--green);
  border: 1px solid rgba(var(--accent-green-rgb),0.3);
}

/* ── SOURCE GRID ── */
.source-grid {
  display: grid; grid-template-columns: repeat(3,minmax(0,1fr));
  gap: 14px; margin-bottom: 18px;
}
.source-card {
  border: 1px solid var(--border); border-radius: var(--radius-lg);
  background: var(--surface); padding: 18px;
  transition: border-color 160ms ease, transform 160ms ease;
}
.source-card:hover { border-color: var(--border-strong); transform: translateY(-1px); box-shadow: var(--shadow-cyan); }
.source-card.solar { border-top: 2px solid var(--solar); }
.source-card.wind  { border-top: 2px solid var(--wind);  }
.source-card.hydro { border-top: 2px solid var(--hydro); }
.source-card-top { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; }
.source-icon-lg {
  width: 48px; height: 48px; border-radius: var(--radius-md);
  display: grid; place-items: center; flex-shrink: 0;
  background: var(--surface-raised); border: 1px solid var(--border);
}
.source-icon-lg svg { width: 32px; height: 32px; }
.source-name-lg  { font-size: 14px; font-weight: 700; }
.source-spec-lg  { font-size: 10px; color: var(--text-muted); margin-top: 3px; font-family: var(--font-mono); }
.source-status-badge {
  margin-left: auto; display: flex; align-items: center; gap: 6px;
  padding: 4px 10px; border-radius: 999px; border: 1px solid var(--border);
  background: var(--bg-input); font-family: var(--font-mono);
  font-size: 10px; font-weight: 700; letter-spacing: 0.06em; color: var(--text-secondary);
}
.source-power-big { font-family: var(--font-mono); font-size: 42px; font-weight: 800; line-height: 1; margin-bottom: 16px; }
.source-power-unit { font-size: 18px; font-weight: 500; color: var(--text-muted); margin-left: 4px; }
.source-metrics-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 8px; margin-bottom: 14px; }
.sm-item { padding: 8px; border: 1px solid var(--border); border-radius: var(--radius-sm); background: var(--bg-input); }
.sm-label { font-size: 9px; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; color: var(--text-muted); }
.sm-value { font-family: var(--font-mono); font-size: 14px; font-weight: 700; margin-top: 4px; }
.sparkline-wrap { height: 56px; margin-bottom: 10px; position: relative; }
.sparkline-wrap canvas { width: 100% !important; height: 56px !important; }
.cap-bar-row { margin-top: 8px; }
.cap-label-row { display: flex; justify-content: space-between; font-size: 10px; color: var(--text-muted); margin-bottom: 5px; }
.cap-bar { height: 6px; border-radius: 999px; background: rgba(var(--surface-raised-rgb),0.9); overflow: hidden; }
.cap-fill { height: 100%; border-radius: 999px; transition: width 300ms ease; }
.cf-solar  { background: linear-gradient(90deg, rgba(var(--accent-warning-rgb),0.45), var(--solar)); }
.cf-wind   { background: linear-gradient(90deg, rgba(var(--accent-cyan-rgb),0.45), var(--cyan)); }
.cf-hydro  { background: linear-gradient(90deg, rgba(var(--accent-green-rgb),0.45), var(--green)); }
.status-dot-sm { width: 7px; height: 7px; border-radius: 50%; }
.pulse-yellow { background: var(--solar); box-shadow: 0 0 10px var(--solar); animation: pulse 2s ease-in-out infinite; }
.pulse-blue   { background: var(--cyan);  box-shadow: 0 0 10px var(--cyan);  animation: pulse 2s ease-in-out infinite; }
.pulse-green  { background: var(--green); box-shadow: 0 0 10px var(--green); animation: pulse 2s ease-in-out infinite; }

/* ── LOG TERMINAL ── */
.log-terminal {
  background: rgba(3,10,19,0.88); border-radius: var(--radius-sm); padding: 10px 12px;
  font-family: var(--font-mono); font-size: 11px; line-height: 1.75;
  overflow-y: auto; border: 1px solid var(--border);
}
body.light-mode .log-terminal { background: rgba(8,21,36,0.92); }
.log-line         { opacity: 0.85; color: var(--text-secondary); }
.log-line.log-success { color: var(--accent-green); }
.log-line.log-info    { color: var(--accent-cyan); }
.log-line.log-warn    { color: var(--accent-warning); }
.log-line.log-error   { color: var(--accent-danger); }
.gateway-row { display: flex; justify-content: space-between; gap: 8px; padding: 10px 14px; border-top: 1px solid var(--border); }
.gw-item { text-align: center; }
.gw-label { font-size: 9px; text-transform: uppercase; letter-spacing: 0.1em; color: var(--text-muted); font-weight: 700; }
.gw-value { font-family: var(--font-mono); font-size: 13px; font-weight: 700; margin-top: 3px; }
.gw-online { color: var(--green); }

/* ── CHART WRAP ── */
.chart-wrap { padding: 14px; border: 1px solid var(--border); border-radius: var(--radius-md); background: linear-gradient(180deg, rgba(var(--accent-cyan-rgb),0.035), transparent 32%), var(--surface); box-shadow: var(--shadow-card); }
body.light-mode .chart-wrap { background: rgba(255,255,255,0.74); }
.chart-top { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 12px; }
.chart-title { font-size: 13px; font-weight: 700; }
.chart-legend { display: flex; gap: 12px; flex-wrap: wrap; }
.leg-item { display: flex; align-items: center; gap: 5px; font-size: 11px; color: var(--text-muted); }
.leg-dot  { width: 10px; height: 10px; border-radius: 50%; flex-shrink: 0; }
.time-filter-group { display: flex; gap: 4px; }
.tf-btn {
  padding: 4px 10px; border-radius: 5px; border: 1px solid var(--border);
  background: var(--bg-input); color: var(--text-muted);
  font-family: var(--font-mono); font-size: 11px; cursor: pointer; transition: 160ms ease;
}
.tf-btn.active, .tf-btn:hover { border-color: var(--accent-cyan); color: var(--cyan); background: rgba(var(--accent-cyan-rgb),0.1); box-shadow: var(--shadow-cyan); }

/* Reusable page layouts */
.overview-main-grid,
.control-main-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}
.overview-main-grid { gap: 14px; margin-bottom: 18px; }
.control-main-grid { margin-bottom: 20px; }
.analytics-chart-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-bottom: 16px;
}
.generation-bottom-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 360px;
  gap: 16px;
}
.storage-layout {
  display: grid;
  grid-template-columns: 340px minmax(0, 1fr);
  gap: 18px;
  margin-bottom: 20px;
}
.stack-gap { display: flex; flex-direction: column; gap: 14px; }
.filter-row,
.algo-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.filter-row { margin-bottom: 14px; }
.algo-bar {
  padding: 10px 16px;
  margin-bottom: 18px;
  border: 1px solid rgba(var(--accent-cyan-rgb),0.2);
  border-radius: var(--radius-md);
  background: rgba(var(--accent-cyan-rgb),0.06);
}
.algo-metrics {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-muted);
}
.metric-grid-2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; }
.metric-grid-3 { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px; }
.panel-pad { padding: 12px; }
.chart-h-80 { position: relative; height: 80px; }
.chart-h-120 { position: relative; height: 120px; width: 100%; }
.chart-h-130 { position: relative; height: 130px; width: 100%; }
.chart-h-140 { position: relative; height: 140px; width: 100%; }
.mono-note {
  background: var(--bg-input);
  border-radius: var(--radius-sm);
  padding: 10px;
  font-family: var(--font-mono);
  font-size: 10px;
  line-height: 1.7;
  color: var(--text-muted);
}

/* ── BATTERY SoC BAR ── */
.soc-bar-container {
  height: 28px; border-radius: 999px;
  background: rgba(var(--surface-raised-rgb),0.86); overflow: hidden;
  margin: 12px 14px; border: 1px solid var(--border);
}
.soc-bar {
  height: 100%; border-radius: 999px;
  background: linear-gradient(90deg, rgba(var(--accent-purple-rgb),0.68), var(--accent-purple));
  box-shadow: 0 0 18px rgba(var(--accent-purple-rgb),0.35);
  display: flex; align-items: center; justify-content: flex-end;
  padding-right: 10px; transition: width 400ms ease;
}
.soc-text { font-family: var(--font-mono); font-size: 11px; font-weight: 700; color: var(--text-primary); }
.batt-metrics-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 8px; padding: 12px 14px; }

/* ── BM-ITEM (sidebar / battery metrics) ── */
.bm-item { padding: 8px; border: 1px solid var(--border); border-radius: var(--radius-sm); background: var(--bg-input); }
.bm-label { font-size: 9px; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; color: var(--text-muted); }
.bm-value { font-family: var(--font-mono); font-size: 13px; font-weight: 700; margin-top: 4px; }

/* ── LOAD GRID ── */
.load-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 10px; padding: 14px; }
.load-tile {
  border: 1px solid var(--border); border-radius: var(--radius-md);
  background: var(--bg-input); padding: 12px; text-align: center;
  cursor: pointer; transition: 160ms ease;
}
.load-tile:hover { border-color: var(--border-strong); transform: translateY(-1px); box-shadow: var(--shadow-cyan); }
.load-tile.active-load { border-left: 2px solid var(--load); background: rgba(var(--accent-warning-rgb),0.07); }
.load-tile.inactive-load { opacity: 0.5; }
.lt-icon  { font-size: 22px; margin-bottom: 6px; }
.lt-name  { font-size: 11px; color: var(--text-muted); margin-bottom: 5px; font-weight: 600; }
.lt-power { font-family: var(--font-mono); font-size: 18px; font-weight: 800; margin-bottom: 6px; color: var(--text-primary); }
.lt-status { padding: 3px 10px; border-radius: 999px; font-family: var(--font-mono); font-size: 10px; font-weight: 700; display: inline-block; }
.lt-status.on  { background: rgba(var(--accent-green-rgb),0.12); color: var(--green); }
.lt-status.off { background: rgba(var(--surface-raised-rgb),0.8); color: var(--text-muted); }

/* ── EFFICIENCY RING ── */
.eff-ring-container { position: relative; width: 180px; height: 180px; }
.eff-center-text {
  position: absolute; inset: 0;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
}
.eff-value { font-family: var(--font-mono); font-weight: 800; color: var(--cyan); }
.eff-label { font-size: 10px; font-weight: 700; letter-spacing: 0.14em; text-transform: uppercase; color: var(--text-muted); margin-top: 4px; }

/* ── ENERGY STRIP ── */
.energy-strip { display: grid; grid-template-columns: repeat(5,1fr); gap: 10px; }
.es-card {
  padding: 14px; border: 1px solid var(--border); border-radius: var(--radius-md);
  background: var(--surface-raised); text-align: center;
}
.es-icon { font-size: 20px; margin-bottom: 6px; }
.es-val  { font-family: var(--font-mono); font-size: 20px; font-weight: 800; line-height: 1.2; }
.es-lbl  { font-size: 10px; color: var(--text-muted); margin-top: 5px; font-weight: 600; letter-spacing: 0.06em; }

/* ── TWIN PAGE ── */
.twin-page { display: flex; flex-direction: column; }
.twin-main { display: flex; flex: 1; overflow: hidden; min-height: calc(100vh - 72px - 48px - 40px); }
.twin-svg-area { flex: 1; position: relative; overflow: hidden; background: rgba(5,13,24,0.82); }
.twin-sidebar {
  width: 260px; background: var(--bg-surface);
  border-left: 1px solid var(--border); overflow-y: auto;
  padding: 12px; display: flex; flex-direction: column; gap: 10px; flex-shrink: 0;
}
body.light-mode .twin-sidebar { background: rgba(255,255,255,0.94); }
.twin-footer {
  height: 40px; background: var(--bg-surface); border-top: 1px solid var(--border);
  display: flex; align-items: center; padding: 0 20px; gap: 12px;
  font-family: var(--font-mono); font-size: 11px; color: var(--text-muted); flex-shrink: 0;
}
.tf-sep { width: 1px; height: 16px; background: var(--border); }

/* Twin SVG node animations */
.node-group { cursor: pointer; transition: opacity 160ms; }
.node-group:hover { opacity: 0.88; }
.flow-path { stroke-dasharray: 8 13; animation: flowPulse 1.9s linear infinite; }
.pulse-node { animation: pulse 1.4s ease-in-out infinite; }

/* ── CONTROL PAGE ── */
.ctrl-section-title { font-family: var(--font-mono); font-size: 11px; color: var(--text-muted); margin-bottom: 12px; padding: 0 14px; }
.toggle-group { display: flex; flex-direction: column; gap: 4px; padding: 0 14px; }
.toggle-item { display: flex; align-items: center; justify-content: space-between; gap: 10px; min-height: 38px; }
.toggle-label { font-size: 12px; color: var(--text-secondary); }
.toggle-switch { position: relative; width: 44px; height: 24px; flex-shrink: 0; }
.toggle-switch input { opacity: 0; width: 0; height: 0; }
.toggle-slider {
  position: absolute; inset: 0; border-radius: 999px;
  background: rgba(var(--surface-raised-rgb),0.88); border: 1px solid var(--border);
  cursor: pointer; transition: 160ms ease;
}
.toggle-slider::after {
  content: ''; position: absolute; width: 16px; height: 16px;
  border-radius: 50%; background: var(--text-muted);
  top: 3px; left: 3px; transition: 160ms ease;
}
input:checked + .toggle-slider { background: rgba(var(--accent-green-rgb),0.14); border-color: rgba(var(--accent-green-rgb),0.5); }
input:checked + .toggle-slider::after { left: 23px; background: var(--green); box-shadow: 0 0 10px var(--green); }

/* Fault buttons */
.fault-grid { display: grid; gap: 8px; padding: 0 14px; }
.fault-grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.fault-btn {
  display: flex; align-items: center; gap: 8px;
  min-height: 40px; padding: 0 12px;
  border: 1px solid rgba(var(--accent-warning-rgb),0.32); border-radius: var(--radius-md);
  background: rgba(var(--accent-warning-rgb),0.08); color: var(--orange);
  cursor: pointer; font-size: 12px; text-align: left; transition: 160ms ease;
}
.fault-btn:hover { border-color: rgba(var(--accent-warning-rgb),0.55); transform: translateY(-1px); box-shadow: 0 0 20px rgba(var(--accent-warning-rgb),0.14); }
.fault-btn.active-fault { border-color: rgba(var(--accent-danger-rgb),0.5); background: rgba(var(--accent-danger-rgb),0.12); color: var(--red); }
.fault-btn.fault-reset { border-color: rgba(var(--accent-green-rgb),0.32); background: rgba(var(--accent-green-rgb),0.07); color: var(--green); }
.fb-icon { font-size: 16px; }

/* Algo status */
.algo-status { display: flex; align-items: center; gap: 10px; font-family: var(--font-mono); font-size: 12px; }
.algo-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--green); box-shadow: 0 0 12px var(--green); animation: pulse 1.5s ease-in-out infinite; flex-shrink: 0; }

/* Scenario cards */
.scenario-grid { display: grid; grid-template-columns: repeat(4,minmax(0,1fr)); gap: 14px; }
.scenario-card {
  border: 1px solid var(--border); border-radius: var(--radius-lg);
  background: var(--surface); padding: 18px; cursor: pointer;
  transition: border-color 160ms ease, transform 160ms ease;
}
.scenario-card:hover { border-color: var(--border-strong); transform: translateY(-2px); box-shadow: var(--shadow-cyan); }
.sc-eff  { border-top: 2px solid var(--cyan); }
.sc-zero { border-top: 2px solid var(--green); }
.sc-batt { border-top: 2px solid var(--batt); }
.sc-peak { border-top: 2px solid var(--solar); }
.sc-icon  { font-size: 28px; margin-bottom: 10px; }
.sc-title { font-size: 14px; font-weight: 700; margin-bottom: 8px; }
.sc-desc  { font-size: 11px; color: var(--text-muted); line-height: 1.55; margin-bottom: 12px; }
.sc-btn {
  padding: 6px 12px; border-radius: var(--radius-sm); background: rgba(var(--accent-cyan-rgb),0.1);
  border: 1px solid rgba(var(--accent-cyan-rgb),0.3); color: var(--cyan);
  font-family: var(--font-mono); font-size: 10px; font-weight: 700; text-align: center;
  transition: 160ms ease;
}
.scenario-card:hover .sc-btn { background: rgba(var(--accent-cyan-rgb),0.18); box-shadow: var(--shadow-cyan); }

/* Twin status grid (control page) */
.twin-status-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 12px; }
.ts-card { padding: 14px; border: 1px solid var(--border); border-radius: var(--radius-md); background: var(--surface-raised); }
.ts-icon  { font-size: 22px; margin-bottom: 8px; }
.ts-title { font-size: 13px; font-weight: 700; margin-bottom: 6px; }
.ts-val   { font-family: var(--font-mono); font-size: 11px; color: var(--text-muted); margin-bottom: 2px; }
.ts-ind   { display: inline-block; margin-top: 8px; font-family: var(--font-mono); font-size: 10px; font-weight: 700; letter-spacing: 0.08em; padding: 3px 8px; border-radius: 999px; }
.ts-online{ background: rgba(var(--accent-green-rgb),0.1); color: var(--green); }
.ts-good  { background: rgba(var(--accent-cyan-rgb),0.1); color: var(--cyan); }

/* Section header */
.section-header { display: flex; align-items: center; gap: 10px; margin-bottom: 14px; margin-top: 4px; }
.section-icon   { font-size: 20px; }
.section-title  { font-size: 16px; font-weight: 700; }

/* Alert cards */
.alert-card { padding: 10px 12px; border-radius: var(--radius-sm); background: rgba(var(--accent-danger-rgb),0.1); border: 1px solid rgba(var(--accent-danger-rgb),0.3); margin-bottom: 4px; }
.alert-card.warn { background: rgba(var(--accent-warning-rgb),0.1); border-color: rgba(var(--accent-warning-rgb),0.3); }
.ac-title  { font-size: 12px; font-weight: 700; color: var(--text-primary); }
.ac-action { font-size: 11px; color: var(--text-muted); margin-top: 3px; }
.no-alerts { font-size: 12px; color: var(--green); padding: 8px 0; }

/* Modal */
.modal-overlay {
  position: fixed; inset: 0; z-index: 100;
  background: rgba(0,0,0,0.68); backdrop-filter: blur(4px);
  display: none; align-items: center; justify-content: center;
}
.modal-box {
  max-width: 500px; width: calc(100% - 40px);
  padding: 28px; border: 1px solid var(--border-strong); border-radius: var(--radius-lg);
  background: var(--panel-strong); box-shadow: var(--shadow-soft), var(--shadow-cyan);
  white-space: pre-wrap; font-size: 12px; line-height: 1.65; color: var(--text-secondary);
}
.modal-title { font-size: 18px; font-weight: 800; color: var(--text-primary); margin-bottom: 14px; white-space: normal; }
.modal-body  { margin-bottom: 14px; }
.modal-stat  { display: flex; justify-content: space-between; padding: 7px 0; border-bottom: 1px solid var(--border); font-family: var(--font-mono); font-size: 11px; }
.modal-stat:last-child { border-bottom: 0; }
.ms-val { color: var(--cyan); font-weight: 700; }
.modal-close { display: block; width: 100%; margin-top: 18px; padding: 10px; border-radius: var(--radius-sm); border: 1px solid var(--border); background: var(--surface-raised); cursor: pointer; font-size: 13px; color: var(--text-secondary); transition: 160ms ease; }
.modal-close:hover { background: var(--surface-hover); color: var(--text-primary); border-color: var(--accent-cyan); box-shadow: var(--shadow-cyan); }

/* Tooltip */
.tooltip {
  position: fixed; z-index: 50;
  padding: 7px 11px; border-radius: var(--radius-sm);
  background: rgba(3,10,22,0.96); border: 1px solid var(--border-strong);
  color: var(--text-primary); font-family: var(--font-mono); font-size: 11px; line-height: 1.45;
  pointer-events: none; opacity: 0; transition: opacity 140ms ease;
  max-width: min(320px,80vw);
}
body.light-mode .tooltip { background: rgba(255,255,255,0.98); color: #0b1b2c; }
.tooltip.visible { opacity: 1; }

/* ── OVERVIEW PAGE extras ── */
.hero-section {
  padding: 22px 26px; margin-bottom: 16px;
  border: 1px solid var(--border); border-radius: var(--radius-lg);
  background: linear-gradient(120deg, rgba(var(--surface-rgb),0.94), rgba(var(--surface-raised-rgb),0.86));
  box-shadow: var(--shadow-card);
  display: flex; align-items: center; justify-content: space-between; gap: 24px;
}
.hero-title {
  font-size: clamp(22px,3vw,32px); font-weight: 800; letter-spacing: -0.02em;
  background: linear-gradient(90deg, var(--text-primary) 60%, var(--cyan));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.hero-subtitle { margin-top: 6px; color: var(--text-muted); font-size: 13px; }
.hero-badges   { display: flex; gap: 8px; margin-top: 14px; flex-wrap: wrap; }
.hbadge {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 4px 10px; border-radius: 999px;
  border: 1px solid var(--border-strong); background: var(--surface-raised);
  font-family: var(--font-mono); font-size: 10px; font-weight: 700;
  letter-spacing: 0.06em; text-transform: uppercase;
}
.hbadge.ok   { border-color: rgba(var(--accent-green-rgb),0.4); color: var(--green); box-shadow: var(--shadow-green); }
.hbadge.sync { border-color: rgba(var(--accent-cyan-rgb),0.35); color: var(--cyan); box-shadow: var(--shadow-cyan); }
.hdot { width: 6px; height: 6px; border-radius: 50%; background: currentColor; }

.nav-shortcut-grid { display: grid; grid-template-columns: repeat(5,1fr); gap: 10px; margin-top: 20px; }
.ns-card {
  padding: 16px; border: 1px solid var(--border); border-radius: var(--radius-md);
  background: var(--surface-raised); text-align: center; cursor: pointer;
  transition: border-color 160ms, transform 160ms; text-decoration: none; display: block;
}
.ns-card:hover { border-color: var(--accent-cyan); transform: translateY(-2px); box-shadow: var(--shadow-cyan); }
.ns-icon { font-size: 28px; margin-bottom: 8px; }
.ns-title { font-size: 13px; font-weight: 700; color: var(--text-primary); }
.ns-sub   { font-size: 11px; color: var(--text-muted); margin-top: 4px; }

/* IoT pipeline strip */
.iot-pipeline { display: grid; grid-template-columns: 1fr 40px 1fr 40px 1fr 40px 1fr; align-items: center; gap: 8px; padding: 14px; margin-top: 16px; }
.iot-step  { text-align: center; padding: 12px; border: 1px solid var(--border); border-radius: var(--radius-md); background: var(--bg-input); }
.iot-arrow { text-align: center; font-family: var(--font-mono); font-size: 18px; color: var(--cyan); }
.iot-icon  { font-size: 20px; margin-bottom: 6px; }
.iot-label { font-size: 11px; font-weight: 700; }
.iot-sub   { font-size: 10px; color: var(--text-muted); margin-top: 3px; }
.iot-path  { height: 2px; border-radius: 999px; background: linear-gradient(90deg, transparent, var(--cyan), transparent); animation: shimmer 1.8s linear infinite; }

/* Status grid (overview) */
.status-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 10px; }
.status-row  { display: flex; justify-content: space-between; gap: 8px; padding: 7px 0; border-bottom: 1px solid var(--border); }
.status-row:last-child { border-bottom: 0; }
.status-row-label  { font-size: 11px; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; color: var(--text-muted); }
.status-row-value  { font-family: var(--font-mono); font-size: 12px; color: var(--text-primary); }

/* Auth and account surfaces */
.auth-screen {
  min-height: 100vh;
  background:
    radial-gradient(circle at 15% 15%, rgba(var(--accent-cyan-rgb), 0.14), transparent 34%),
    linear-gradient(135deg, var(--app-bg), #020712 70%);
}
.auth-layout {
  display: grid;
  grid-template-columns: minmax(320px, 520px) minmax(260px, 1fr);
  gap: 28px;
  min-height: 100vh;
  align-items: center;
  padding: 28px;
}
.auth-layout.single { grid-template-columns: minmax(320px, 560px); justify-content: center; }
.auth-panel,
.auth-context .panel {
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, rgba(16, 34, 56, 0.94), rgba(9, 17, 29, 0.94));
  box-shadow: var(--shadow-soft), var(--shadow-cyan);
  padding: 28px;
}
.auth-brand { display: flex; gap: 16px; align-items: flex-start; margin-bottom: 22px; }
.auth-brand h1,
.auth-panel h1,
.auth-context h2,
.auth-copy h2 { margin: 4px 0 8px; color: var(--text-primary); }
.auth-brand p,
.auth-panel p,
.auth-context p,
.auth-copy p { color: var(--text-secondary); line-height: 1.65; }
.auth-switch {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
  margin-bottom: 18px;
  padding: 5px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--app-bg-secondary);
}
.auth-switch button {
  border: 0;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  background: transparent;
  padding: 10px 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  cursor: pointer;
}
.auth-switch button.active {
  color: var(--app-bg);
  background: var(--accent-cyan);
  box-shadow: var(--shadow-cyan);
}
.auth-form { display: grid; gap: 14px; }
.auth-form.inline { max-width: 560px; }
.auth-form label { display: grid; gap: 7px; color: var(--text-secondary); font-size: 12px; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; }
.auth-form input {
  min-height: 44px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--app-bg-secondary);
  color: var(--text-primary);
  padding: 0 12px;
  font: 500 14px var(--font-sans);
  outline: none;
}
.auth-form input:focus { border-color: var(--accent-cyan); box-shadow: 0 0 0 3px rgba(var(--accent-cyan-rgb), 0.14); }
.primary-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  border: 0;
  border-radius: var(--radius-md);
  background: var(--accent-cyan);
  color: var(--app-bg);
  font-weight: 800;
  padding: 0 16px;
  cursor: pointer;
  box-shadow: var(--shadow-cyan);
  text-decoration: none;
}
.primary-action.compact { min-height: 36px; padding: 0 14px; font-size: 13px; }
.primary-action:disabled { cursor: wait; opacity: 0.6; }
.auth-message { min-height: 18px; color: var(--accent-warning); font-size: 13px; }
.auth-footer { display: flex; justify-content: space-between; gap: 12px; margin-top: 18px; flex-wrap: wrap; }
.auth-footer.left { justify-content: flex-start; }
.auth-footer a { color: var(--accent-cyan); text-decoration: none; font-weight: 700; }
.auth-footer a:hover { text-decoration: underline; }
.auth-kpi-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin-top: 18px;
}
.auth-kpi-grid span,
.account-details dd {
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--app-bg-secondary);
  padding: 12px;
  color: var(--text-secondary);
}
.auth-kpi-grid b { display: block; color: var(--accent-green); font-family: var(--font-mono); margin-bottom: 4px; }
.signup-only { display: none; }
body[data-auth-view="signup"] .signup-only { display: grid; }
.account-details { display: grid; grid-template-columns: 160px 1fr; gap: 10px; margin-top: 18px; }
.account-details dt { color: var(--text-muted); font-size: 12px; text-transform: uppercase; letter-spacing: 0.08em; padding: 12px 0; }
.account-details dd { margin: 0; overflow-wrap: anywhere; font-family: var(--font-mono); }
.mono { font-family: var(--font-mono); color: var(--accent-cyan); }
.auth-nav-link .nav-icon { font-size: 10px; font-family: var(--font-mono); }

/* ── RESPONSIVE ── */
@media (max-width: 1400px) {
  .stat-grid { grid-template-columns: repeat(3,minmax(0,1fr)); }
  .stat-grid-4,
  .stat-grid-5 { grid-template-columns: repeat(3,minmax(0,1fr)); }
  .energy-strip { grid-template-columns: repeat(3,1fr); }
  .overview-main-grid,
  .control-main-grid { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .scenario-grid { grid-template-columns: repeat(2,1fr); }
  .twin-status-grid { grid-template-columns: repeat(2,1fr); }
  .screen-library-grid { grid-template-columns: repeat(3,minmax(0,1fr)); }
  .nav-shortcut-grid { grid-template-columns: repeat(3,1fr); }
}
@media (max-width: 1100px) {
  .device-page-grid { grid-template-columns: 1fr; }
  .screen-library-grid { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .source-grid { grid-template-columns: 1fr 1fr; }
  .generation-bottom-grid,
  .storage-layout,
  .analytics-chart-grid { grid-template-columns: 1fr; }
  .twin-sidebar { display: none; }
}
@media (max-width: 900px) {
  .top-header { grid-template-columns: 1fr; grid-template-rows: auto auto auto; min-height: auto; }
  .header-center { justify-content: flex-start; }
  .stat-grid { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .stat-grid-4,
  .stat-grid-5,
  .overview-main-grid,
  .control-main-grid { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .source-grid { grid-template-columns: 1fr; }
  .load-grid { grid-template-columns: repeat(2,1fr); }
  .energy-strip { grid-template-columns: repeat(2,1fr); }
  .scenario-grid { grid-template-columns: 1fr; }
  .twin-status-grid { grid-template-columns: 1fr 1fr; }
  .nav-shortcut-grid { grid-template-columns: repeat(2,1fr); }
  .iot-pipeline { grid-template-columns: 1fr; }
  .iot-arrow { transform: rotate(90deg); }
  .twin-main { flex-direction: column; }
  .twin-svg-area { min-height: 400px; }
  .twin-footer { height: auto; min-height: 40px; flex-wrap: wrap; padding: 8px 12px; }
  .auth-layout { grid-template-columns: 1fr; }
  .auth-context { display: none; }
}
@media (max-width: 680px) {
  .page-content { padding: 12px 12px 24px; }
  .page-hero { align-items: flex-start; flex-direction: column; }
  .page-hero-metrics { width: 100%; min-width: 0; grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .screen-library-grid { grid-template-columns: 1fr; }
  .screen-card-thumb { height: 210px; }
  .stat-grid,
  .stat-grid-4,
  .stat-grid-5,
  .overview-main-grid,
  .control-main-grid { grid-template-columns: 1fr; }
  .batt-metrics-grid { grid-template-columns: repeat(2,1fr); }
  .load-grid { grid-template-columns: 1fr 1fr; }
  .metric-grid-2,
  .metric-grid-3 { grid-template-columns: 1fr; }
  .fault-grid-2 { grid-template-columns: 1fr; }
  .hero-section { align-items: flex-start; flex-direction: column; }
  .auth-layout { padding: 14px; }
  .auth-panel { padding: 20px; }
  .auth-kpi-grid { grid-template-columns: 1fr; }
  .account-details { grid-template-columns: 1fr; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}