/* ═══════════════════════════════════════════════════════════════════════════
   NRF24L01 Hardware Bridge Simulator — style.css
   ═══════════════════════════════════════════════════════════════════════════ */

/* ── CSS VARIABLES ────────────────────────────────────────────────────────── */
:root {
  --bg:     #060a0f;
  --panel:  #0d1520;
  --border: #1a2d45;
  --accent: #00e5ff;
  --green:  #00ff88;
  --red:    #ff4444;
  --yellow: #ffcc00;
  --text:   #b0c8e0;
  --dim:    #3a5570;
  --orange: #ff9900;
  --purple: #c084fc;
  --glow:   0 0 12px #00e5ff55;
}

/* ── RESET ────────────────────────────────────────────────────────────────── */
* { box-sizing: border-box; margin: 0; padding: 0; }

/* ── BODY ─────────────────────────────────────────────────────────────────── */
body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Share Tech Mono', monospace;
  min-height: 100vh;
  overflow-x: hidden;
}

/* Grid background */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(0,229,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,229,255,0.03) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
  z-index: 0;
}

/* ── CONTAINER ────────────────────────────────────────────────────────────── */
.container {
  position: relative;
  z-index: 1;
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px 16px;
}

/* ── HEADER ───────────────────────────────────────────────────────────────── */
.header { text-align: center; margin-bottom: 24px; }
.header h1 {
  font-family: 'Orbitron', monospace;
  font-size: clamp(1.1rem, 3vw, 1.8rem);
  font-weight: 900;
  color: var(--accent);
  text-shadow: var(--glow);
  letter-spacing: 0.08em;
  margin-bottom: 4px;
}
.header .sub {
  font-size: 0.72rem;
  color: var(--dim);
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

/* ── MODE BANNER ──────────────────────────────────────────────────────────── */
.mode-banner {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}
.mode-pill {
  padding: 6px 18px;
  border-radius: 20px;
  font-family: 'Orbitron', monospace;
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.2s;
}
.mode-pill.sim    { background:#ff990020; color:var(--orange); border-color:#ff990044; }
.mode-pill.sim.active  { background:#ff990040; box-shadow:0 0 14px #ff990044; border-color:var(--orange); }
.mode-pill.hw     { background:#00ff8820; color:var(--green);  border-color:#00ff8844; }
.mode-pill.hw.active   { background:#00ff8840; box-shadow:0 0 14px #00ff8844; border-color:var(--green); }
.mode-pill.bridge { background:#00e5ff20; color:var(--accent); border-color:#00e5ff44; }
.mode-pill.bridge.active{ background:#00e5ff40; box-shadow:0 0 14px #00e5ff44; border-color:var(--accent); }

/* ── HARDWARE PANEL ───────────────────────────────────────────────────────── */
.hw-panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 18px;
  margin-bottom: 20px;
  display: none;
}
.hw-panel.visible { display: block; }

.hw-panel-title {
  font-family: 'Orbitron', monospace;
  font-size: 0.75rem;
  color: var(--accent);
  letter-spacing: 0.15em;
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}
.hw-panel-sub {
  font-family: 'Share Tech Mono', monospace;
  font-size: 0.6rem;
  font-weight: 400;
  color: var(--dim);
}

.hw-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
}
.hw-port-box {
  background: #080e18;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 14px;
}
.hw-port-title {
  font-size: 0.65rem;
  color: var(--dim);
  letter-spacing: 0.15em;
  margin-bottom: 10px;
  text-transform: uppercase;
}
.hw-port-title span         { color: var(--orange); }
.hw-port-title.rx-title span{ color: var(--green); }

.hw-row {
  display: flex;
  gap: 8px;
  margin-bottom: 8px;
  align-items: center;
  flex-wrap: wrap;
}
.hw-status {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.68rem;
  padding: 5px 10px;
  border-radius: 4px;
  background: #060a0f;
  border: 1px solid var(--border);
  flex: 1;
  min-width: 0;
}
.hw-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--dim);
  flex-shrink: 0;
}
.hw-dot.connected { background:var(--green); box-shadow:0 0 6px var(--green); animation:pulse 1.4s infinite; }
.hw-dot.error     { background:var(--red);   box-shadow:0 0 6px var(--red); }

/* ── SMALL BUTTONS ────────────────────────────────────────────────────────── */
.btn-small {
  font-family: 'Orbitron', monospace;
  font-size: 0.6rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  border: none;
  border-radius: 4px;
  padding: 7px 12px;
  cursor: pointer;
  transition: all 0.15s;
  white-space: nowrap;
}
.btn-connect-tx { background:#ff990025; color:var(--orange); border:1px solid #ff990044; }
.btn-connect-tx:hover { background:#ff990045; }
.btn-connect-rx { background:#00ff8825; color:var(--green);  border:1px solid #00ff8844; }
.btn-connect-rx:hover { background:#00ff8845; }
.btn-disconnect { background:#ff444415; color:var(--red);    border:1px solid #ff444430; }
.btn-disconnect:hover { background:#ff444430; }

/* ── BAUD SELECT ──────────────────────────────────────────────────────────── */
.baud-select {
  background: #060a0f;
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--text);
  font-family: 'Share Tech Mono', monospace;
  font-size: 0.7rem;
  padding: 5px 8px;
}

/* ── NO SERIAL WARNING ────────────────────────────────────────────────────── */
.no-serial-warn {
  background: #ff990010;
  border: 1px solid #ff990033;
  border-radius: 6px;
  padding: 10px 14px;
  font-size: 0.68rem;
  color: var(--yellow);
  margin-top: 10px;
  display: none;
}
.no-serial-warn.show { display: block; }

/* ── WIRING GUIDE ─────────────────────────────────────────────────────────── */
.wire-guide {
  background: #060a0f;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 12px;
  margin-top: 14px;
  font-size: 0.65rem;
  line-height: 1.8;
}
.wire-guide-title {
  color: var(--accent);
  letter-spacing: 0.12em;
  margin-bottom: 8px;
  font-size: 0.62rem;
}
.wire-table { width: 100%; border-collapse: collapse; }
.wire-table th {
  color: var(--dim);
  font-size: 0.58rem;
  letter-spacing: 0.15em;
  text-align: left;
  padding: 3px 6px;
  border-bottom: 1px solid var(--border);
}
.wire-table td { padding: 3px 6px; }
.w-nrf  { color: var(--accent); }
.w-ard  { color: var(--orange); }
.w-note { color: var(--dim); font-size: 0.58rem; }

/* ── FREQUENCY BAR ────────────────────────────────────────────────────────── */
.freq-bar {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 16px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}
.badge {
  border: 1px solid var(--border);
  padding: 5px 12px;
  border-radius: 4px;
  font-size: 0.68rem;
  color: var(--dim);
  letter-spacing: 0.12em;
}
.badge span { color: var(--accent); }

.status-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 8px var(--green);
  animation: pulse 1.4s ease-in-out infinite;
  display: inline-block;
  margin-right: 6px;
}

/* ── BOARDS LAYOUT ────────────────────────────────────────────────────────── */
.boards {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 16px;
  align-items: stretch;
  margin-bottom: 20px;
}

/* ── BOARD CARD ───────────────────────────────────────────────────────────── */
.board {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px;
  position: relative;
  overflow: hidden;
  transition: box-shadow 0.3s;
}
.board::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0.5;
}
.board.tx::before { background: linear-gradient(90deg, transparent, var(--orange), transparent); }
.board.rx::before { background: linear-gradient(90deg, transparent, var(--green),  transparent); }
.board.hw-linked  { box-shadow: 0 0 0 1px #00ff8844, 0 0 20px #00ff8811; }

.board-badge {
  position: absolute;
  top: 10px; right: 10px;
  font-size: 0.55rem;
  padding: 3px 8px;
  border-radius: 3px;
  letter-spacing: 0.12em;
}
.board-badge.sim-badge { background:#ff990015; color:var(--orange); border:1px solid #ff990030; }
.board-badge.hw-badge  { background:#00ff8815; color:var(--green);  border:1px solid #00ff8830; }

.board-label {
  font-family: 'Orbitron', monospace;
  font-size: 0.62rem;
  letter-spacing: 0.2em;
  color: var(--dim);
  margin-bottom: 8px;
}
.board-title {
  font-family: 'Orbitron', monospace;
  font-size: 0.9rem;
  font-weight: 700;
  margin-bottom: 3px;
}
.board.tx .board-title { color:var(--orange); text-shadow:0 0 10px #ff990055; }
.board.rx .board-title { color:var(--green);  text-shadow:0 0 10px #00ff8855; }

.board-sub { font-size: 0.68rem; color: var(--dim); margin-bottom: 12px; }

/* ── LED ROW ──────────────────────────────────────────────────────────────── */
.led-row { display: flex; gap: 8px; margin-bottom: 12px; flex-wrap: wrap; }
.led { display: flex; align-items: center; gap: 5px; font-size: 0.62rem; }
.led-dot {
  width: 9px; height: 9px;
  border-radius: 50%;
  background: var(--dim);
  transition: background 0.2s, box-shadow 0.2s;
}
.led-dot.on-green  { background:var(--green);  box-shadow:0 0 8px var(--green); }
.led-dot.on-orange { background:var(--orange); box-shadow:0 0 8px var(--orange); }
.led-dot.on-blue   { background:var(--accent); box-shadow:0 0 8px var(--accent); }

/* ── PIN MAP ──────────────────────────────────────────────────────────────── */
.pins {
  background: #080e18;
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 9px;
  margin-bottom: 12px;
  font-size: 0.62rem;
}
.pin-title { color: var(--dim); letter-spacing: 0.12em; margin-bottom: 5px; }
.pin-row   { display: flex; justify-content: space-between; padding: 2px 0; }
.pin-name  { color: var(--accent); }
.pin-val   { color: var(--text); }

/* ── SERIAL MONITOR ───────────────────────────────────────────────────────── */
.serial-title {
  font-size: 0.6rem;
  color: var(--dim);
  letter-spacing: 0.15em;
  margin-bottom: 5px;
}
.hw-tag {
  color: var(--purple);
  font-size: 0.58rem;
}
.serial {
  background: #04080d;
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 9px;
  height: 180px;
  overflow-y: auto;
  font-size: 0.67rem;
  line-height: 1.7;
  scrollbar-width: thin;
  scrollbar-color: var(--dim) transparent;
}
.log-line       { display: block; }
.log-line.sys   { color: var(--dim); }
.log-line.tx    { color: var(--orange); }
.log-line.rx    { color: var(--green); }
.log-line.err   { color: var(--red); }
.log-line.info  { color: var(--accent); }
.log-line.hw    { color: var(--purple); }
.log-line.warn  { color: var(--yellow); }

/* ── RF CHANNEL (MIDDLE) ──────────────────────────────────────────────────── */
.channel {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 9px;
  min-width: 85px;
}
.ch-label {
  font-family: 'Orbitron', monospace;
  font-size: 0.52rem;
  color: var(--dim);
  letter-spacing: 0.18em;
  text-align: center;
}
.antenna {
  font-size: 1.7rem;
  filter: drop-shadow(0 0 6px var(--accent));
  animation: float 3s ease-in-out infinite;
}

/* Signal waves */
.waves { display: flex; flex-direction: column; align-items: center; gap: 4px; width: 55px; }
.wave  { height: 3px; border-radius: 2px; background: var(--dim); transition: background 0.3s, box-shadow 0.3s, width 0.3s; }
.wave:nth-child(1){ width: 55%; }
.wave:nth-child(2){ width: 78%; }
.wave:nth-child(3){ width: 100%; }
.waves.active .wave {
  background: var(--accent);
  box-shadow: 0 0 6px var(--accent);
  animation: waveAnim 0.6s ease-in-out infinite alternate;
}
.waves.active .wave:nth-child(1){ animation-delay: 0s; }
.waves.active .wave:nth-child(2){ animation-delay: 0.15s; }
.waves.active .wave:nth-child(3){ animation-delay: 0.3s; }

/* RSSI bar */
.rssi-bar  { width: 55px; height: 6px; background: var(--border); border-radius: 3px; overflow: hidden; }
.rssi-fill { height: 100%; width: 0%; background: linear-gradient(90deg, var(--green), var(--accent)); border-radius: 3px; transition: width 0.4s ease; }

/* ── PACKET STRIP ─────────────────────────────────────────────────────────── */
.packet-strip {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 16px;
  margin-bottom: 18px;
  overflow: hidden;
  position: relative;
  height: 48px;
  display: flex;
  align-items: center;
}
.strip-label {
  font-size: 0.58rem;
  color: var(--dim);
  letter-spacing: 0.15em;
  position: absolute;
  top: 5px; left: 12px;
}
.packet-track {
  width: 100%;
  height: 3px;
  background: var(--border);
  border-radius: 2px;
  position: relative;
  margin-top: 10px;
}
.packet-node {
  position: absolute;
  width: 32px; height: 18px;
  border-radius: 3px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.52rem;
  top: -8px; left: 0%;
  transform: translateX(-50%);
  opacity: 0;
  font-family: 'Share Tech Mono', monospace;
  white-space: nowrap;
}
.packet-node.flying {
  opacity: 1;
  animation: fly 1.2s ease-in-out forwards;
}

/* ── CONTROLS ─────────────────────────────────────────────────────────────── */
.controls {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 18px;
  margin-bottom: 18px;
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: flex-end;
}
.ctrl-group { display: flex; flex-direction: column; gap: 5px; flex: 1; min-width: 140px; }
.ctrl-label { font-size: 0.62rem; color: var(--dim); letter-spacing: 0.15em; }
.ctrl-input {
  background: #080e18;
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--text);
  font-family: 'Share Tech Mono', monospace;
  font-size: 0.78rem;
  padding: 7px 9px;
  outline: none;
  transition: border-color 0.2s;
  width: 100%;
}
.ctrl-input:focus { border-color: var(--accent); }
select.ctrl-input option { background: #0d1520; }

/* ── MAIN BUTTONS ─────────────────────────────────────────────────────────── */
.btn {
  font-family: 'Orbitron', monospace;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  border: none;
  border-radius: 4px;
  padding: 8px 16px;
  cursor: pointer;
  transition: all 0.15s;
  text-transform: uppercase;
}
.btn-tx { background:#ff990020; color:var(--orange); border:1px solid #ff990055; }
.btn-tx:hover  { background:#ff990040; box-shadow:0 0 12px #ff990033; }
.btn-tx:active { transform: scale(0.96); }

.btn-auto { background:#00e5ff10; color:var(--accent); border:1px solid #00e5ff44; }
.btn-auto:hover   { background:#00e5ff25; }
.btn-auto.running { background:#00e5ff30; box-shadow:0 0 10px #00e5ff44; }

.btn-clear { background:#ff444410; color:var(--red); border:1px solid #ff444430; font-size:0.62rem; padding:6px 10px; }
.btn-clear:hover { background:#ff444425; }

/* ── STATS ────────────────────────────────────────────────────────────────── */
.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 10px;
  margin-bottom: 18px;
}
.stat-card { background: var(--panel); border: 1px solid var(--border); border-radius: 6px; padding: 11px 12px; }
.stat-label { font-size: 0.58rem; color: var(--dim); letter-spacing: 0.15em; margin-bottom: 3px; }
.stat-value { font-family: 'Orbitron', monospace; font-size: 1.05rem; font-weight: 700; color: var(--accent); }
.stat-value.green  { color: var(--green); }
.stat-value.orange { color: var(--orange); }
.stat-value.red    { color: var(--red); }
.stat-value.purple { color: var(--purple); }

/* ── RAW SERIAL PANEL ─────────────────────────────────────────────────────── */
.raw-panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px;
  margin-bottom: 18px;
}
.raw-panel-title {
  font-family: 'Orbitron', monospace;
  font-size: 0.72rem;
  color: var(--purple);
  letter-spacing: 0.15em;
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}
.raw-panel-sub {
  font-family: 'Share Tech Mono', monospace;
  font-size: 0.58rem;
  font-weight: 400;
  color: var(--dim);
}
.raw-input-row { display: flex; gap: 8px; margin-bottom: 10px; flex-wrap: wrap; }
.raw-target-select {
  background: #080e18;
  border: 1px solid var(--border);
  color: var(--text);
  padding: 7px 9px;
  border-radius: 4px;
  font-family: 'Share Tech Mono', monospace;
  font-size: 0.75rem;
}
.raw-input {
  flex: 1;
  min-width: 160px;
  background: #080e18;
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--purple);
  font-family: 'Share Tech Mono', monospace;
  font-size: 0.78rem;
  padding: 7px 10px;
  outline: none;
  transition: border-color 0.2s;
}
.raw-input:focus { border-color: var(--purple); }
.btn-raw {
  background: #c084fc20;
  color: var(--purple);
  border: 1px solid #c084fc44;
  font-family: 'Orbitron', monospace;
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  padding: 7px 12px;
  border-radius: 4px;
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.15s;
}
.btn-raw:hover { background: #c084fc35; }
.raw-log {
  background: #04080d;
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 9px;
  height: 120px;
  overflow-y: auto;
  font-size: 0.67rem;
  line-height: 1.7;
  scrollbar-width: thin;
  scrollbar-color: var(--dim) transparent;
}

/* ── ARDUINO SKETCH PANEL ─────────────────────────────────────────────────── */
.sketch-panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px;
  margin-bottom: 18px;
}
.sketch-panel-title {
  font-family: 'Orbitron', monospace;
  font-size: 0.72rem;
  color: var(--accent);
  letter-spacing: 0.15em;
  margin-bottom: 12px;
}
.sketch-tabs { display: flex; gap: 8px; margin-bottom: 12px; flex-wrap: wrap; }
.sketch-tab {
  font-family: 'Orbitron', monospace;
  font-size: 0.6rem;
  letter-spacing: 0.12em;
  padding: 5px 12px;
  border-radius: 4px;
  cursor: pointer;
  border: 1px solid var(--border);
  color: var(--dim);
  background: transparent;
  transition: all 0.15s;
}
.sketch-tab.active { color: var(--accent); border-color: var(--accent); background: #00e5ff10; }

/* Syntax highlight tokens */
.sketch-code {
  background: #04080d;
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 12px;
  font-size: 0.65rem;
  line-height: 1.8;
  overflow-x: auto;
  color: #8fbc8f;
  white-space: pre;
}
.c-comment { color: #3a5570; }
.c-keyword  { color: #569cd6; }
.c-string   { color: #ce9178; }
.c-func     { color: #dcdcaa; }
.c-num      { color: #b5cea8; }
.c-macro    { color: #c586c0; }

/* ── ANIMATIONS ───────────────────────────────────────────────────────────── */
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.3; }
}
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(-5px); }
}
@keyframes waveAnim {
  from { opacity: 0.4; }
  to   { opacity: 1; }
}
@keyframes fly {
  0%   { left: 2%;  opacity: 0; }
  10%  { opacity: 1; }
  90%  { opacity: 1; }
  100% { left: 98%; opacity: 0; }
}

/* ── RESPONSIVE ───────────────────────────────────────────────────────────── */
@media (max-width: 680px) {
  .boards  { grid-template-columns: 1fr; }
  .channel { flex-direction: row; min-width: unset; }
}

/* ── SCROLLBAR ────────────────────────────────────────────────────────────── */
::-webkit-scrollbar       { width: 4px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--dim); border-radius: 2px; }