/**
 * Main Stylesheet
 * ---------------------------------------------------------------------------
 * Vanilla CSS3 خالص - بدون هیچ فریمورک یا کتابخانه‌ی خارجی.
 */

@font-face {
  font-family: "Vazirmatn";
  src: local("Vazirmatn"), local("Tahoma");
  font-display: swap;
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  background: var(--bg-base);
  color: var(--text-primary);
  font-family: var(--font-ui);
}

body {
  background-image:
    radial-gradient(circle at 12% 0%, rgba(45, 226, 196, 0.06), transparent 40%),
    radial-gradient(circle at 90% 10%, rgba(155, 140, 255, 0.05), transparent 35%);
  min-height: 100vh;
}

/* ===================== Topbar ===================== */

.topbar {
  height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  background: var(--bg-glass);
  backdrop-filter: var(--blur-glass);
  -webkit-backdrop-filter: var(--blur-glass);
  border-bottom: 1px solid var(--border-soft);
  position: sticky;
  top: 0;
  z-index: 100;
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
}

.brand-mark {
  font-size: 28px;
  color: var(--signal-cyan);
  text-shadow: 0 0 18px rgba(45, 226, 196, 0.6);
}

.brand-text h1 {
  font-size: 16px;
  font-weight: 700;
  margin: 0;
  letter-spacing: 0.2px;
}

.brand-text p {
  margin: 2px 0 0;
  font-size: 12.5px;
  color: var(--text-secondary);
}

.connection-bar {
  display: flex;
  align-items: center;
  gap: 16px;
}

.device-info {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.5;
  color: var(--text-secondary);
}

.device-info strong {
  color: var(--text-primary);
  font-family: var(--font-ui);
  font-size: 13px;
}

.status-indicator {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-secondary);
  padding: 6px 12px;
  border: 1px solid var(--border-soft);
  border-radius: 999px;
  background: var(--bg-glass);
}

.status-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--status-disconnected);
  box-shadow: 0 0 0 0 transparent;
  transition: background 0.25s ease, box-shadow 0.25s ease;
}

.status-dot[data-status="connected"] {
  background: var(--status-connected);
  box-shadow: 0 0 10px 2px rgba(45, 226, 196, 0.55);
  animation: pulse 2s infinite;
}

.status-dot[data-status="connecting"],
.status-dot[data-status="waiting_permission"],
.status-dot[data-status="reconnecting"] {
  background: var(--status-connecting);
  box-shadow: 0 0 10px 2px rgba(255, 182, 72, 0.5);
  animation: pulse 1s infinite;
}

.status-dot[data-status="error"] {
  background: var(--status-error);
  box-shadow: 0 0 10px 2px rgba(255, 92, 92, 0.55);
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.45; }
}

/* ===================== Buttons ===================== */

.btn {
  font-family: var(--font-ui);
  font-size: 13.5px;
  font-weight: 600;
  border: 1px solid var(--border-soft);
  background: var(--bg-glass);
  color: var(--text-primary);
  padding: 9px 18px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: transform 0.12s ease, background 0.2s ease, border-color 0.2s ease;
}

.btn:hover {
  transform: translateY(-1px);
  border-color: var(--border-strong);
}

.btn:active {
  transform: translateY(0);
}

.btn-primary {
  background: linear-gradient(135deg, var(--signal-cyan), var(--signal-cyan-dim));
  color: #04201b;
  border-color: transparent;
}

.btn-danger {
  background: rgba(255, 92, 92, 0.12);
  border-color: rgba(255, 92, 92, 0.35);
  color: #ffb3b3;
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
}

.btn-small {
  padding: 5px 10px;
  font-size: 12px;
}

/* ===================== App Grid ===================== */

.app-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 18px;
  padding: 20px 24px 32px;
  max-width: 1480px;
  margin: 0 auto;
  transition: filter 0.4s ease;
}

.app-grid.is-blurred {
  filter: blur(6px) saturate(0.7);
  pointer-events: none;
  user-select: none;
}

.panel-sidebar {
  display: flex;
  flex-direction: column;
  gap: 18px;
  background: none;
  border: none;
  padding: 0;
  backdrop-filter: none;
  box-shadow: none;
}

/* ===================== Panels (Glassmorphism) ===================== */

.panel {
  background: var(--bg-glass);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-lg);
  backdrop-filter: var(--blur-glass);
  -webkit-backdrop-filter: var(--blur-glass);
  box-shadow: var(--shadow-panel);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-soft);
}

.panel-header h2 {
  margin: 0;
  font-size: 14px;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: 0.2px;
}

.panel-body {
  padding: 20px;
  flex: 1;
}

.placeholder-text {
  color: var(--text-secondary);
  font-size: 13.5px;
  line-height: 2;
  text-align: center;
  margin: 40px auto;
  max-width: 320px;
}

.placeholder-text small {
  color: var(--text-faint);
}

.controller-stage {
  min-height: 420px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.controller-render-target {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.debug-grid {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 2px;
  font-family: var(--font-mono);
  font-size: 13px;
}

.debug-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px;
  border-bottom: 1px solid var(--border-soft);
}

.debug-row span {
  color: var(--text-secondary);
}

.debug-row strong {
  color: var(--signal-cyan);
  font-weight: 600;
  direction: ltr;
}

/* ===================== Terminal ===================== */

.panel-terminal {
  flex: 1;
  min-height: 260px;
}

.terminal-output {
  flex: 1;
  overflow-y: auto;
  padding: 14px 18px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.9;
  background: rgba(0, 0, 0, 0.25);
  direction: ltr;
  text-align: left;
}

.term-line {
  display: flex;
  gap: 10px;
  white-space: pre-wrap;
  word-break: break-word;
  border-bottom: 1px solid rgba(255, 255, 255, 0.03);
  padding: 2px 0;
}

.term-time {
  color: var(--text-faint);
  flex-shrink: 0;
}

.term-tag {
  flex-shrink: 0;
  width: 42px;
  font-weight: 700;
}

.term-msg {
  color: var(--text-secondary);
}

.term-info .term-tag { color: var(--signal-violet); }
.term-success .term-tag { color: var(--signal-cyan); }
.term-success .term-msg { color: var(--text-primary); }
.term-warning .term-tag { color: var(--signal-amber); }
.term-warning .term-msg { color: var(--signal-amber); }
.term-error .term-tag { color: var(--signal-red); }
.term-error .term-msg { color: #ffb3b3; }
.term-hid .term-tag { color: #6fb7ff; }
.term-feature .term-tag { color: #6fb7ff; }
.term-calibration .term-tag { color: var(--signal-cyan); }
.term-firmware .term-tag { color: var(--signal-violet); }

/* ===================== Disconnect Overlay ===================== */

.disconnect-overlay {
  position: fixed;
  inset: 0;
  top: var(--header-height);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 50;
  pointer-events: none;
}

#app.is-blurred ~ .disconnect-overlay {
  display: flex;
}

.disconnect-card {
  pointer-events: auto;
  background: var(--bg-raised);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  padding: 28px 32px;
  max-width: 360px;
  text-align: center;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

.disconnect-icon {
  font-size: 30px;
  color: var(--signal-amber);
  display: block;
  margin-bottom: 10px;
}

.disconnect-card h3 {
  margin: 0 0 8px;
  font-size: 15px;
}

.disconnect-card p {
  margin: 0;
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.9;
}

/* ===================== Responsive ===================== */

@media (max-width: 980px) {
  .app-grid {
    grid-template-columns: 1fr;
  }
  .topbar {
    flex-direction: column;
    height: auto;
    gap: 10px;
    padding: 14px 16px;
  }
  .connection-bar {
    flex-wrap: wrap;
    justify-content: center;
  }
}