/* ── DESIGN TOKENS ───────────────────────────────────────── */
:root {
  --bg:         #0a0c10;
  --bg2:        #0f1218;
  --bg3:        #151a22;
  --border:     #1e2530;
  --border2:    #2a3340;
  --text:       #c8d4e0;
  --text-dim:   #5a6878;
  --text-mid:   #8a9ab0;
  --accent:     #00e5ff;
  --accent-dim: #004d5a;

  --red:        #ff3b3b;
  --red-glow:   rgba(255,59,59,0.35);
  --red-dim:    #3d1010;

  --yellow:     #ffc107;
  --yellow-glow:rgba(255,193,7,0.35);
  --yellow-dim: #3d2e00;

  --green:      #00e676;
  --green-glow: rgba(0,230,118,0.35);
  --green-dim:  #003d1a;

  --font-mono:  'Share Tech Mono', monospace;
  --font-cond:  'Barlow Condensed', sans-serif;
  --font-body:  'Barlow', sans-serif;

  --radius:     4px;
  --radius-lg:  8px;
}

/* ── RESET & BASE ────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 15px; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  min-height: 100vh;
  overflow-x: hidden;
}

/* scanline overlay */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 2px,
    rgba(0,0,0,0.08) 2px,
    rgba(0,0,0,0.08) 4px
  );
  pointer-events: none;
  z-index: 9999;
}

/* ── CONFIG BANNER ───────────────────────────────────────── */
#config-banner {
  background: #1a0d00;
  border-bottom: 1px solid #ffc10744;
  padding: 12px 24px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--yellow);
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}
#config-banner .cfg-label { color: var(--text-dim); }
#config-banner input {
  background: #0f0900;
  border: 1px solid #ffc10744;
  color: var(--yellow);
  padding: 4px 10px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  border-radius: var(--radius);
  width: 340px;
}
#config-banner input:focus { outline: none; border-color: var(--yellow); }
#config-banner button {
  background: #ffc107;
  color: #000;
  border: none;
  padding: 5px 16px;
  font-family: var(--font-cond);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  cursor: pointer;
  border-radius: var(--radius);
}
#config-banner button:hover { background: #ffe083; }

/* ── HEADER ──────────────────────────────────────────────── */
header {
  border-bottom: 1px solid var(--border);
  padding: 0 32px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--bg2);
  position: sticky;
  top: 0;
  z-index: 100;
}
.header-left {
  display: flex;
  align-items: center;
  gap: 16px;
}
.logo-mark {
  width: 28px; height: 28px;
  display: flex;
  flex-direction: column;
  gap: 3px;
  justify-content: center;
}
.logo-mark span {
  display: block;
  height: 6px;
  border-radius: 2px;
}
.logo-mark span:nth-child(1) { background: var(--red);    width: 28px; }
.logo-mark span:nth-child(2) { background: var(--yellow); width: 20px; }
.logo-mark span:nth-child(3) { background: var(--green);  width: 28px; }
.header-title {
  font-family: var(--font-cond);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #fff;
}
.header-sub {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--text-dim);
  letter-spacing: 0.06em;
}
.status-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--text-dim);
  transition: background 0.3s, box-shadow 0.3s;
}
.status-dot.connected {
  background: var(--green);
  box-shadow: 0 0 8px var(--green-glow);
  animation: pulse-dot 2s infinite;
}
@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.5; }
}
.conn-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-dim);
}
.conn-label.connected { color: var(--green); }

/* ── MAIN GRID ───────────────────────────────────────────── */
.grid-outer {
  display: grid;
  grid-template-columns: 320px 1fr;
  grid-template-rows: auto 1fr;
  gap: 1px;
  background: var(--border);
  min-height: calc(100vh - 57px);
}
.panel {
  background: var(--bg2);
  padding: 24px;
}

/* ── TRAFFIC LIGHT PANEL ─────────────────────────────────── */
.tl-panel {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
  grid-row: 1 / 3;
  border-right: 1px solid var(--border);
}

.tl-housing {
  width: 110px;
  background: #0c0e12;
  border: 2px solid var(--border2);
  border-radius: 14px;
  padding: 20px 16px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 18px;
  position: relative;
  box-shadow:
    inset 0 2px 8px rgba(0,0,0,0.6),
    0 0 30px rgba(0,0,0,0.4);
}
.tl-housing::before, .tl-housing::after {
  content: '';
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  width: 18px;
  height: 14px;
  background: var(--border2);
  border-radius: 3px;
}
.tl-housing::before { top: -15px; }
.tl-housing::after  { bottom: -15px; }

.tl-lens {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: #080a0d;
  border: 2px solid var(--border2);
  position: relative;
  transition: background 0.25s, box-shadow 0.25s;
  display: flex;
  align-items: center;
  justify-content: center;
}
.tl-lens::after {
  content: '';
  width: 20px; height: 20px;
  border-radius: 50%;
  background: rgba(255,255,255,0.04);
  position: absolute;
  top: 8px; left: 8px;
}

.tl-lens.red-on {
  background: var(--red);
  box-shadow: 0 0 20px var(--red-glow), 0 0 60px var(--red-glow), inset 0 0 10px rgba(255,255,255,0.15);
  animation: flicker 0.1s infinite alternate;
}
.tl-lens.yellow-on {
  background: var(--yellow);
  box-shadow: 0 0 20px var(--yellow-glow), 0 0 60px var(--yellow-glow), inset 0 0 10px rgba(255,255,255,0.15);
}
.tl-lens.green-on {
  background: var(--green);
  box-shadow: 0 0 20px var(--green-glow), 0 0 60px var(--green-glow), inset 0 0 10px rgba(255,255,255,0.15);
}
@keyframes flicker {
  0%   { opacity: 1; }
  100% { opacity: 0.93; }
}

.tl-pole {
  width: 8px;
  height: 50px;
  background: var(--border2);
  border-radius: 2px;
  margin-top: -8px;
}

/* ── STATUS DISPLAY ──────────────────────────────────────── */
.status-badge {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  width: 100%;
}
.status-color-label {
  font-family: var(--font-cond);
  font-weight: 900;
  font-size: 2rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  transition: color 0.25s;
}
.status-color-label.RED    { color: var(--red);    text-shadow: 0 0 20px var(--red-glow); }
.status-color-label.YELLOW { color: var(--yellow); text-shadow: 0 0 20px var(--yellow-glow); }
.status-color-label.GREEN  { color: var(--green);  text-shadow: 0 0 20px var(--green-glow); }

/* ── COUNTDOWN ───────────────────────────────────────────── */
.countdown-wrap {
  width: 100%;
  text-align: center;
}
.countdown-label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  color: var(--text-dim);
  margin-bottom: 6px;
  text-transform: uppercase;
}
.countdown-value {
  font-family: var(--font-mono);
  font-size: 3rem;
  font-weight: 400;
  line-height: 1;
  color: #fff;
  letter-spacing: -0.02em;
}
.countdown-bar {
  height: 4px;
  background: var(--border2);
  border-radius: 2px;
  margin-top: 8px;
  overflow: hidden;
}
.countdown-bar-fill {
  height: 100%;
  border-radius: 2px;
  transition: width 1s linear, background 0.3s;
}

/* ── MODE SECTION ────────────────────────────────────────── */
.mode-section {
  width: 100%;
}
.section-label {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.15em;
  color: var(--text-dim);
  text-transform: uppercase;
  margin-bottom: 10px;
  border-bottom: 1px solid var(--border);
  padding-bottom: 6px;
}

.mode-toggle {
  display: flex;
  gap: 0;
  border: 1px solid var(--border2);
  border-radius: var(--radius);
  overflow: hidden;
}
.mode-btn {
  flex: 1;
  padding: 10px 0;
  font-family: var(--font-cond);
  font-weight: 700;
  font-size: 0.9rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  background: transparent;
  color: var(--text-dim);
  border: none;
  cursor: pointer;
  transition: background 0.2s, color 0.2s;
}
.mode-btn:hover { background: var(--bg3); color: var(--text); }
.mode-btn.active-auto {
  background: var(--accent-dim);
  color: var(--accent);
}
.mode-btn.active-manual {
  background: #3d2900;
  color: var(--yellow);
}

/* ── MANUAL CONTROLS ─────────────────────────────────────── */
.manual-controls {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 12px;
}
.manual-controls.hidden { display: none; }

.ctrl-btn {
  width: 100%;
  padding: 13px 16px;
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-cond);
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border: 1px solid var(--border2);
  border-radius: var(--radius);
  background: var(--bg3);
  color: var(--text-mid);
  cursor: pointer;
  transition: all 0.15s;
}
.ctrl-btn:hover { border-color: var(--border2); transform: translateX(2px); }
.ctrl-btn-dot {
  width: 14px; height: 14px;
  border-radius: 50%;
  flex-shrink: 0;
}
.ctrl-btn.red-btn .ctrl-btn-dot    { background: var(--red-dim);    border: 2px solid #ff3b3b44; }
.ctrl-btn.yellow-btn .ctrl-btn-dot { background: var(--yellow-dim); border: 2px solid #ffc10744; }
.ctrl-btn.green-btn .ctrl-btn-dot  { background: var(--green-dim);  border: 2px solid #00e67644; }
.ctrl-btn.red-btn:hover {
  border-color: var(--red);
  background: var(--red-dim);
  color: var(--red);
  box-shadow: 0 0 12px var(--red-glow);
}
.ctrl-btn.red-btn:hover .ctrl-btn-dot { background: var(--red); border-color: var(--red); }
.ctrl-btn.yellow-btn:hover {
  border-color: var(--yellow);
  background: var(--yellow-dim);
  color: var(--yellow);
  box-shadow: 0 0 12px var(--yellow-glow);
}
.ctrl-btn.yellow-btn:hover .ctrl-btn-dot { background: var(--yellow); border-color: var(--yellow); }
.ctrl-btn.green-btn:hover {
  border-color: var(--green);
  background: var(--green-dim);
  color: var(--green);
  box-shadow: 0 0 12px var(--green-glow);
}
.ctrl-btn.green-btn:hover .ctrl-btn-dot { background: var(--green); border-color: var(--green); }

.ctrl-btn.active-red {
  border-color: var(--red);
  background: var(--red-dim);
  color: var(--red);
  box-shadow: 0 0 16px var(--red-glow);
}
.ctrl-btn.active-red .ctrl-btn-dot { background: var(--red); }
.ctrl-btn.active-yellow {
  border-color: var(--yellow);
  background: var(--yellow-dim);
  color: var(--yellow);
  box-shadow: 0 0 16px var(--yellow-glow);
}
.ctrl-btn.active-yellow .ctrl-btn-dot { background: var(--yellow); }
.ctrl-btn.active-green {
  border-color: var(--green);
  background: var(--green-dim);
  color: var(--green);
  box-shadow: 0 0 16px var(--green-glow);
}
.ctrl-btn.active-green .ctrl-btn-dot { background: var(--green); }

/* ── ESP32 INFO ──────────────────────────────────────────── */
.esp-info {
  width: 100%;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 14px;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--text-dim);
  line-height: 1.8;
}
.esp-info .row { display: flex; justify-content: space-between; }
.esp-info .val { color: var(--accent); }
.esp-info .val.red    { color: var(--red); }
.esp-info .val.yellow { color: var(--yellow); }
.esp-info .val.green  { color: var(--green); }

/* ── RIGHT TOP (stats) ───────────────────────────────────── */
.stats-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
  border-bottom: 1px solid var(--border);
}
.stat-card {
  background: var(--bg2);
  padding: 20px 24px;
}
.stat-card-label {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  color: var(--text-dim);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 8px;
}
.stat-card-value {
  font-family: var(--font-cond);
  font-size: 1.9rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.01em;
  line-height: 1;
}
.stat-card-sub {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  color: var(--text-dim);
  margin-top: 4px;
}
.stat-bar-row {
  display: flex;
  gap: 3px;
  margin-top: 10px;
}
.stat-bar-seg {
  height: 3px;
  border-radius: 1px;
}

/* ── RIGHT BOTTOM ────────────────────────────────────────── */
.bottom-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--border);
}
.bottom-panel {
  background: var(--bg2);
  padding: 24px;
  overflow: hidden;
}

/* ── LOG TABLE ───────────────────────────────────────────── */
.log-table-wrap {
  overflow-y: auto;
  max-height: 320px;
}
.log-table-wrap::-webkit-scrollbar { width: 4px; }
.log-table-wrap::-webkit-scrollbar-track { background: var(--bg3); }
.log-table-wrap::-webkit-scrollbar-thumb { background: var(--border2); border-radius: 2px; }

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.78rem;
}
thead th {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.1em;
  color: var(--text-dim);
  text-transform: uppercase;
  text-align: left;
  padding: 0 12px 10px 0;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  background: var(--bg2);
  z-index: 1;
}
tbody tr {
  border-bottom: 1px solid var(--border);
  transition: background 0.15s;
}
tbody tr:hover { background: var(--bg3); }
tbody td {
  padding: 9px 12px 9px 0;
  font-family: var(--font-mono);
  color: var(--text-mid);
}
.cell-status {
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 6px;
}
.cell-dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  flex-shrink: 0;
}
.cell-dot.RED    { background: var(--red);    box-shadow: 0 0 5px var(--red-glow); }
.cell-dot.YELLOW { background: var(--yellow); box-shadow: 0 0 5px var(--yellow-glow); }
.cell-dot.GREEN  { background: var(--green);  box-shadow: 0 0 5px var(--green-glow); }
.cell-status.RED    { color: var(--red); }
.cell-status.YELLOW { color: var(--yellow); }
.cell-status.GREEN  { color: var(--green); }
.badge-mode {
  display: inline-block;
  padding: 2px 7px;
  border-radius: 2px;
  font-size: 0.6rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.badge-mode.AUTO   { background: var(--accent-dim); color: var(--accent); }
.badge-mode.MANUAL { background: #3d2900; color: var(--yellow); }

/* ── CHART PANEL ─────────────────────────────────────────── */
.chart-container {
  position: relative;
  height: 280px;
}

/* ── TOAST ───────────────────────────────────────────────── */
#toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: var(--bg3);
  border: 1px solid var(--border2);
  border-radius: var(--radius-lg);
  padding: 12px 20px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent);
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.2s, transform 0.2s;
  pointer-events: none;
  z-index: 9000;
  max-width: 320px;
}
#toast.show {
  opacity: 1;
  transform: translateY(0);
}
#toast.error { color: var(--red); border-color: #ff3b3b44; }

/* ── LOADING OVERLAY ─────────────────────────────────────── */
#loading {
  position: fixed;
  inset: 0;
  background: var(--bg);
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 20px;
  font-family: var(--font-cond);
  font-size: 1rem;
  letter-spacing: 0.15em;
  color: var(--text-dim);
  transition: opacity 0.4s;
}
.loading-leds {
  display: flex;
  flex-direction: column;
  gap: 8px;
  align-items: center;
}
.loading-led {
  width: 20px; height: 20px;
  border-radius: 50%;
  opacity: 0.2;
  transition: opacity 0.3s;
}
.loading-led:nth-child(1) { background: var(--red); }
.loading-led:nth-child(2) { background: var(--yellow); }
.loading-led:nth-child(3) { background: var(--green); }

/* ── PANEL HEADER ────────────────────────────────────────── */
.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}
.panel-title {
  font-family: var(--font-cond);
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text);
}
.panel-badge {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  color: var(--text-dim);
  background: var(--bg3);
  padding: 3px 8px;
  border-radius: 2px;
  border: 1px solid var(--border);
}

/* ── RESPONSIVE ──────────────────────────────────────────── */
@media (max-width: 900px) {
  .grid-outer { grid-template-columns: 1fr; }
  .tl-panel { grid-row: auto; border-right: none; border-bottom: 1px solid var(--border); }
  .bottom-grid { grid-template-columns: 1fr; }
  .stats-row { grid-template-columns: 1fr; }
}