/* ─── TOKENS ─────────────────────────────────────── */
:root {
  --bg:        #080c14;
  --bg-2:      #0d1220;
  --bg-3:      #111827;
  --panel:     #0f1623;
  --panel-2:   #141d2e;
  --border:    rgba(99,179,237,0.1);
  --border-2:  rgba(99,179,237,0.18);
  --cyan:      #38bdf8;
  --cyan-dim:  rgba(56,189,248,0.12);
  --green:     #34d399;
  --green-dim: rgba(52,211,153,0.12);
  --yellow:    #fbbf24;
  --red:       #f87171;
  --red-dim:   rgba(248,113,113,0.12);
  --purple:    #a78bfa;
  --white:     #f0f6ff;
  --muted:     #4a5568;
  --muted-2:   #2d3748;
  --text:      #cbd5e1;
  --font-mono: 'JetBrains Mono', monospace;
  --font-body: 'Inter', sans-serif;
  --sidebar-w: 220px;
}

/* light theme */
body.light {
  --bg:      #f0f4f8;
  --bg-2:    #e2e8f0;
  --bg-3:    #edf2f7;
  --panel:   #ffffff;
  --panel-2: #f7fafc;
  --border:  rgba(0,0,0,0.08);
  --border-2:rgba(0,0,0,0.14);
  --text:    #2d3748;
  --muted:   #a0aec0;
  --muted-2: #e2e8f0;
  --white:   #1a202c;
}

/* ─── RESET ──────────────────────────────────────── */
*, *::before, *::after { margin:0; padding:0; box-sizing:border-box; }
html { font-size:14px; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  display: flex;
  min-height: 100vh;
  overflow-x: hidden;
}

button { cursor: pointer; font-family: var(--font-body); border: none; background: none; }

/* ─── SIDEBAR ────────────────────────────────────── */
.sidebar {
  width: var(--sidebar-w);
  background: var(--bg-2);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  padding: 24px 0;
  position: fixed;
  left: 0; top: 0; bottom: 0;
  z-index: 100;
}

.sidebar-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0 20px 24px;
  border-bottom: 1px solid var(--border);
}

.logo-icon {
  font-size: 28px;
  color: var(--cyan);
  line-height: 1;
  filter: drop-shadow(0 0 8px rgba(56,189,248,0.5));
}

.logo-main {
  font-family: var(--font-mono);
  font-size: 16px;
  font-weight: 700;
  color: var(--white);
  letter-spacing: 0.1em;
}

.logo-sub {
  font-family: var(--font-mono);
  font-size: 16px;
  font-weight: 300;
  color: var(--cyan);
  letter-spacing: 0.1em;
}

.sidebar-status {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
}

.sys-status {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 8px;
}

.sys-status.online { color: var(--green); }
.sys-status .ss-dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 8px var(--green);
  animation: blink 2s infinite;
}

@keyframes blink { 0%,100%{opacity:1} 50%{opacity:0.3} }

.sys-time {
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 700;
  color: var(--white);
  letter-spacing: 0.05em;
  line-height: 1.2;
}

.sys-date {
  font-size: 11px;
  color: var(--muted);
  margin-top: 2px;
  letter-spacing: 0.04em;
}

.sidebar-nav {
  flex: 1;
  padding: 16px 12px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 500;
  color: var(--muted);
  transition: all 0.2s ease;
  position: relative;
  text-align: left;
  width: 100%;
}

.nav-item:hover { background: var(--panel); color: var(--text); }
.nav-item.active {
  background: var(--cyan-dim);
  color: var(--cyan);
  border: 1px solid rgba(56,189,248,0.2);
}

.ni-icon { font-size: 16px; flex-shrink: 0; }

.nav-badge {
  margin-left: auto;
  background: var(--red);
  color: white;
  font-size: 10px;
  font-weight: 700;
  padding: 1px 6px;
  border-radius: 10px;
  display: none;
}

.nav-badge.visible { display: block; }

.sidebar-footer {
  padding: 16px 20px;
  border-top: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.sf-row {
  display: flex;
  justify-content: space-between;
  font-size: 11px;
}

.sf-label { color: var(--muted); }
.sf-val { font-family: var(--font-mono); color: var(--text); }
.sf-val.green { color: var(--green); }
.sf-val.muted { color: var(--muted); }

/* ─── MAIN ───────────────────────────────────────── */
.main {
  margin-left: var(--sidebar-w);
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* ─── TOPBAR ─────────────────────────────────────── */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 28px;
  border-bottom: 1px solid var(--border);
  background: var(--bg);
  position: sticky;
  top: 0;
  z-index: 50;
}

.page-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 2px;
}

.page-subtitle {
  font-size: 11px;
  color: var(--muted);
  letter-spacing: 0.06em;
}

.topbar-right {
  display: flex;
  align-items: center;
  gap: 16px;
}

.refresh-info {
  display: flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--muted);
}

.ri-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--cyan);
  animation: blink 1.5s infinite;
}

.btn-icon {
  width: 34px; height: 34px;
  border-radius: 8px;
  background: var(--panel);
  border: 1px solid var(--border);
  color: var(--muted);
  font-size: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
}

.btn-icon:hover { border-color: var(--cyan); color: var(--cyan); }

/* ─── VIEWS ──────────────────────────────────────── */
.view { display: none; padding: 24px 28px; flex: 1; }
.view.active { display: block; }

/* ─── STAT ROW ───────────────────────────────────── */
.stat-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 20px;
}

.stat-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
  position: relative;
  overflow: hidden;
  transition: border-color 0.3s ease;
}

.stat-card:hover { border-color: var(--border-2); }

.sc-label {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted);
  margin-bottom: 10px;
}

.sc-value {
  font-family: var(--font-mono);
  font-size: 32px;
  font-weight: 700;
  color: var(--cyan);
  line-height: 1;
  margin-bottom: 6px;
}

.sc-value.alert-val { color: var(--red); }

.sc-trend {
  font-size: 11px;
  color: var(--muted);
}

.sc-icon {
  position: absolute;
  top: 16px; right: 16px;
  font-size: 28px;
  opacity: 0.2;
}

/* ─── DASH GRID ──────────────────────────────────── */
.dash-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: auto auto;
  gap: 16px;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
}

.panel-rooms { grid-column: 1; grid-row: 1; }
.panel-chart { grid-column: 2; grid-row: 1; }
.panel-alerts { grid-column: 1; grid-row: 2; }
.panel-controls { grid-column: 2; grid-row: 2; }

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 18px;
  border-bottom: 1px solid var(--border);
}

.ph-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--white);
  letter-spacing: 0.02em;
}

.ph-badge {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--cyan);
  background: var(--cyan-dim);
  padding: 3px 10px;
  border-radius: 20px;
  border: 1px solid rgba(56,189,248,0.2);
}

.ph-action {
  font-size: 11px;
  color: var(--muted);
  padding: 4px 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
  transition: all 0.2s ease;
}

.ph-action:hover { border-color: var(--border-2); color: var(--text); }

/* ─── ROOM CARDS ─────────────────────────────────── */
.rooms-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--border);
}

.room-card {
  background: var(--panel);
  padding: 16px;
  transition: background 0.2s ease;
}

.room-card:hover { background: var(--panel-2); }

.rc-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.rc-room {
  font-size: 12px;
  font-weight: 600;
  color: var(--white);
  display: flex;
  align-items: center;
  gap: 6px;
}

.rc-status {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 6px var(--green);
}

.rc-status.warn { background: var(--yellow); box-shadow: 0 0 6px var(--yellow); }
.rc-status.alert { background: var(--red); box-shadow: 0 0 6px var(--red); }

.rc-readings {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.rc-reading {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.rr-label {
  font-size: 10px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.rr-val {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
}

.rr-bar {
  width: 60px;
  height: 3px;
  background: var(--muted-2);
  border-radius: 2px;
  overflow: hidden;
  margin: 0 8px;
}

.rr-fill {
  height: 100%;
  border-radius: 2px;
  transition: width 1s ease;
}

/* ─── CHART ──────────────────────────────────────── */
#tempChart {
  display: block;
  width: 100%;
  height: 200px;
  padding: 12px 16px 16px;
}

/* ─── ALERT LOG ──────────────────────────────────── */
.alert-log {
  max-height: 220px;
  overflow-y: auto;
  padding: 8px 0;
}

.log-entry {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  padding: 10px 18px;
  border-bottom: 1px solid var(--border);
  animation: logIn 0.3s ease;
}

@keyframes logIn {
  from { opacity:0; transform: translateX(-8px); }
  to   { opacity:1; transform: none; }
}

.le-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  margin-top: 4px;
  flex-shrink: 0;
}

.le-dot.info  { background: var(--cyan); }
.le-dot.warn  { background: var(--yellow); }
.le-dot.alert { background: var(--red); }
.le-dot.ok    { background: var(--green); }

.le-content { flex: 1; }

.le-msg {
  font-size: 12px;
  color: var(--text);
  margin-bottom: 2px;
}

.le-time {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--muted);
}

.log-empty {
  padding: 24px 18px;
  font-size: 12px;
  color: var(--muted);
  font-style: italic;
}

/* ─── CONTROLS ───────────────────────────────────── */
.controls-list {
  padding: 12px 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.control-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px;
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: 8px;
  transition: border-color 0.2s ease;
}

.control-item:hover { border-color: var(--border-2); }

.ci-left {
  display: flex;
  align-items: center;
  gap: 10px;
}

.ci-icon { font-size: 18px; }

.ci-name {
  font-size: 13px;
  font-weight: 500;
  color: var(--text);
}

.ci-room {
  font-size: 10px;
  color: var(--muted);
  margin-top: 1px;
}

/* TOGGLE */
.toggle {
  width: 40px; height: 22px;
  background: var(--muted-2);
  border-radius: 11px;
  position: relative;
  cursor: pointer;
  transition: background 0.3s ease;
  border: none;
  flex-shrink: 0;
}

.toggle.on { background: var(--cyan); }

.toggle::after {
  content:'';
  position: absolute;
  width: 16px; height: 16px;
  background: white;
  border-radius: 50%;
  top: 3px; left: 3px;
  transition: left 0.3s ease;
  box-shadow: 0 1px 3px rgba(0,0,0,0.3);
}

.toggle.on::after { left: 21px; }

/* ─── SENSORS VIEW ───────────────────────────────── */
.sensors-detail {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.sensor-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
  transition: border-color 0.3s ease;
}

.sensor-card:hover { border-color: var(--border-2); }

.sensor-card.warn  { border-color: rgba(251,191,36,0.3); }
.sensor-card.alert { border-color: rgba(248,113,113,0.35); }

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

.senc-room {
  font-size: 13px;
  font-weight: 700;
  color: var(--white);
}

.senc-type {
  font-size: 10px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-top: 2px;
}

.senc-badge {
  font-size: 9px;
  font-weight: 600;
  text-transform: uppercase;
  padding: 3px 8px;
  border-radius: 4px;
  letter-spacing: 0.06em;
}

.senc-badge.ok    { background: var(--green-dim); color: var(--green); }
.senc-badge.warn  { background: rgba(251,191,36,0.12); color: var(--yellow); }
.senc-badge.alert { background: var(--red-dim); color: var(--red); }

.senc-readings {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.senc-val-row {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.svr-label {
  font-size: 10px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.svr-value {
  font-family: var(--font-mono);
  font-size: 28px;
  font-weight: 700;
  color: var(--cyan);
  line-height: 1;
}

.svr-bar {
  height: 4px;
  background: var(--muted-2);
  border-radius: 2px;
  overflow: hidden;
  margin-top: 4px;
}

.svr-fill {
  height: 100%;
  border-radius: 2px;
  transition: width 1.5s cubic-bezier(0.16,1,0.3,1);
}

/* ─── ALERTS PAGE ────────────────────────────────── */
.alerts-page {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.alert-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px 20px;
  display: flex;
  gap: 14px;
  align-items: flex-start;
  animation: logIn 0.3s ease;
}

.alert-card.warn  { border-left: 3px solid var(--yellow); }
.alert-card.alert { border-left: 3px solid var(--red); }
.alert-card.ok    { border-left: 3px solid var(--green); }

.ac-icon { font-size: 20px; flex-shrink: 0; }
.ac-title { font-size: 14px; font-weight: 600; color: var(--white); margin-bottom: 4px; }
.ac-desc  { font-size: 12px; color: var(--muted); }
.ac-time  { font-family: var(--font-mono); font-size: 10px; color: var(--muted); margin-top: 4px; }

/* ─── DEVICES GRID ───────────────────────────────── */
.devices-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.device-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
  text-align: center;
  transition: all 0.3s ease;
}

.device-card.on { border-color: rgba(56,189,248,0.25); background: var(--cyan-dim); }

.dc-icon { font-size: 32px; margin-bottom: 10px; }
.dc-name { font-size: 13px; font-weight: 600; color: var(--white); margin-bottom: 4px; }
.dc-room { font-size: 11px; color: var(--muted); margin-bottom: 14px; }
.dc-power {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--muted);
  margin-bottom: 14px;
}

.chart-legend {
  display: flex;
  gap: 14px;
  font-size: 11px;
}

.cl-item {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--muted);
}

.cl-item::before {
  content:'';
  width: 20px; height: 2px;
  border-radius: 1px;
  background: var(--cyan);
}

.cl-item.green::before { background: var(--green); }

/* ─── SCROLL ─────────────────────────────────────── */
.alert-log::-webkit-scrollbar { width: 4px; }
.alert-log::-webkit-scrollbar-track { background: transparent; }
.alert-log::-webkit-scrollbar-thumb { background: var(--muted-2); border-radius: 2px; }

/* ─── RESPONSIVE ─────────────────────────────────── */
@media (max-width: 1100px) {
  .stat-row { grid-template-columns: repeat(2, 1fr); }
  .dash-grid { grid-template-columns: 1fr; }
  .panel-rooms, .panel-chart, .panel-alerts, .panel-controls { grid-column: 1; grid-row: auto; }
  .sensors-detail { grid-template-columns: 1fr 1fr; }
  .devices-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  :root { --sidebar-w: 0px; }
  .sidebar { display: none; }
  .main { margin-left: 0; }
  .stat-row { grid-template-columns: 1fr 1fr; }
  .rooms-grid { grid-template-columns: 1fr; }
  .sensors-detail { grid-template-columns: 1fr; }
  .devices-grid { grid-template-columns: repeat(2, 1fr); }
}