/* ═══════════════════════════════════════════════════════════════
   StochRSI Momentum Persistence — Trading Terminal
   Design: Volcanic Glass palette · Clash Display + Space Mono
   Tone: Industrial/utilitarian dark terminal — precision-first
═══════════════════════════════════════════════════════════════ */

/* ── TOKENS ──────────────────────────────────────────────────── */
:root {
  /* Volcanic Glass palette */
  --bg-void:        #080808;
  --bg-base:        #0D0D0D;
  --bg-panel:       #111114;
  --bg-raised:      #161619;
  --bg-hover:       #1C1C20;
  --border-subtle:  #1E1E24;
  --border-mid:     #2A2A35;
  --border-bright:  #3A3A48;

  /* Accent — Volcanic Orange */
  --accent:         #FF6B2B;
  --accent-dim:     rgba(255, 107, 43, 0.15);
  --accent-glow:    rgba(255, 107, 43, 0.35);

  /* Semantic colors */
  --long-color:     #00FF88;
  --long-dim:       rgba(0, 255, 136, 0.12);
  --long-glow:      rgba(0, 255, 136, 0.3);
  --short-color:    #FF3366;
  --short-dim:      rgba(255, 51, 102, 0.12);
  --short-glow:     rgba(255, 51, 102, 0.3);
  --warn-color:     #FFB800;
  --warn-dim:       rgba(255, 184, 0, 0.12);
  --comp-color:     #7B7B99;
  --comp-dim:       rgba(123, 123, 153, 0.12);
  --neutral-color:  #444455;

  /* Text */
  --text-primary:   #E8E4DF;
  --text-secondary: #888899;
  --text-muted:     #444455;
  --text-accent:    #FF6B2B;

  /* Typography */
  --font-display:   'Clash Display', sans-serif;
  --font-body:      'Newsreader', serif;
  --font-mono:      'Space Mono', monospace;

  /* Spacing */
  --gap-xs:  4px;
  --gap-sm:  8px;
  --gap-md:  12px;
  --gap-lg:  16px;
  --gap-xl:  24px;

  /* Radii */
  --r-sm:  3px;
  --r-md:  6px;
  --r-lg:  10px;

  /* Layout */
  --header-h:     56px;
  --sidebar-w:    240px;
}

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

html, body {
  width: 100%; height: 100%;
  overflow: hidden;
  background: var(--bg-void);
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

/* ── SCROLLBAR ───────────────────────────────────────────────── */
::-webkit-scrollbar { width: 4px; height: 4px; }
::-webkit-scrollbar-track { background: var(--bg-base); }
::-webkit-scrollbar-thumb { background: var(--border-mid); border-radius: 2px; }
::-webkit-scrollbar-thumb:hover { background: var(--border-bright); }

/* ═══════════════════════════════════════════════════════════════
   HEADER
═══════════════════════════════════════════════════════════════ */
.app-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--header-h);
  background: var(--bg-panel);
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--gap-lg);
  z-index: 100;
  gap: var(--gap-lg);
}

/* Logo */
.logo-mark {
  display: flex;
  align-items: center;
  gap: var(--gap-sm);
}
.logo-icon {
  font-size: 20px;
  color: var(--accent);
  line-height: 1;
  filter: drop-shadow(0 0 6px var(--accent-glow));
}
.logo-text {
  display: flex;
  flex-direction: column;
  gap: 1px;
}
.logo-title {
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--text-primary);
}
.logo-sub {
  font-size: 8px;
  letter-spacing: 0.15em;
  color: var(--text-muted);
}

.header-divider {
  width: 1px;
  height: 28px;
  background: var(--border-subtle);
  margin: 0 var(--gap-sm);
}

.header-left {
  display: flex;
  align-items: center;
  gap: var(--gap-md);
  flex: 1;
}

.symbol-info {
  display: flex;
  flex-direction: column;
  gap: 1px;
}
.symbol-name {
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: 0.05em;
}
.symbol-tf {
  font-size: 9px;
  color: var(--text-muted);
  letter-spacing: 0.1em;
}

.price-display {
  display: flex;
  flex-direction: column;
  gap: 1px;
}
.current-price {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: 0.02em;
}
.price-change {
  font-size: 10px;
  color: var(--text-secondary);
}
.price-change.up   { color: var(--long-color); }
.price-change.down { color: var(--short-color); }

/* ── LIFECYCLE BADGE (CENTER) ────────────────────────────────── */
.header-center {
  display: flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
}

.lifecycle-badge {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  padding: var(--gap-sm) var(--gap-xl);
  border: 1px solid var(--border-mid);
  border-radius: var(--r-md);
  background: var(--bg-raised);
  min-width: 200px;
  transition: border-color 0.4s, background 0.4s;
}
.lifecycle-badge.state-long-hold {
  border-color: var(--long-color);
  background: rgba(0, 255, 136, 0.05);
  box-shadow: 0 0 20px rgba(0, 255, 136, 0.1);
}
.lifecycle-badge.state-short-hold {
  border-color: var(--short-color);
  background: rgba(255, 51, 102, 0.05);
  box-shadow: 0 0 20px rgba(255, 51, 102, 0.1);
}
.lifecycle-badge.state-compression {
  border-color: var(--comp-color);
  background: rgba(123, 123, 153, 0.05);
}
.lifecycle-badge.state-warn {
  border-color: var(--warn-color);
  background: rgba(255, 184, 0, 0.05);
}

.badge-pulse {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 100%; height: 100%;
  border-radius: var(--r-md);
  opacity: 0;
  pointer-events: none;
}
.badge-pulse.active {
  animation: badgePulse 2s ease-out infinite;
}
@keyframes badgePulse {
  0%   { opacity: 0.4; transform: translate(-50%,-50%) scale(1); }
  100% { opacity: 0;   transform: translate(-50%,-50%) scale(1.08); }
}

.badge-state {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--text-primary);
  transition: color 0.3s;
}
.badge-bars {
  font-size: 9px;
  letter-spacing: 0.1em;
  color: var(--text-muted);
}

/* ── HEADER RIGHT ────────────────────────────────────────────── */
.header-right {
  display: flex;
  align-items: center;
  gap: var(--gap-lg);
  flex: 1;
  justify-content: flex-end;
}

.header-stat {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 1px;
}
.stat-label {
  font-size: 8px;
  letter-spacing: 0.12em;
  color: var(--text-muted);
}
.stat-value {
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
}
.stat-value.accent { color: var(--accent); }
.stat-value.warn   { color: var(--warn-color); }
.stat-value.green  { color: var(--long-color); }
.stat-value.danger { color: var(--short-color); }

/* ── CONTROLS ────────────────────────────────────────────────── */
.controls {
  display: flex;
  align-items: center;
  gap: var(--gap-sm);
}

.btn {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.08em;
  padding: 5px 12px;
  border-radius: var(--r-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.15s;
  white-space: nowrap;
}
.btn-primary {
  background: var(--accent);
  color: #000;
  border-color: var(--accent);
}
.btn-primary:hover { background: #FF8A55; }
.btn-primary.playing {
  background: var(--warn-color);
  border-color: var(--warn-color);
}
.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border-color: var(--border-mid);
}
.btn-ghost:hover {
  color: var(--text-primary);
  border-color: var(--border-bright);
  background: var(--bg-hover);
}

.speed-control {
  display: flex;
  align-items: center;
  gap: var(--gap-xs);
}
.speed-label {
  font-size: 8px;
  letter-spacing: 0.1em;
  color: var(--text-muted);
}
.speed-slider {
  -webkit-appearance: none;
  width: 60px;
  height: 3px;
  background: var(--border-mid);
  border-radius: 2px;
  outline: none;
  cursor: pointer;
}
.speed-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
}
.speed-val {
  font-size: 9px;
  color: var(--accent);
  min-width: 20px;
}

/* ═══════════════════════════════════════════════════════════════
   MAIN LAYOUT
═══════════════════════════════════════════════════════════════ */
.app-main {
  position: fixed;
  top: var(--header-h);
  left: 0; right: 0; bottom: 0;
  display: grid;
  grid-template-columns: var(--sidebar-w) 1fr var(--sidebar-w);
  gap: 0;
  overflow: hidden;
}

/* ═══════════════════════════════════════════════════════════════
   PANELS (shared)
═══════════════════════════════════════════════════════════════ */
.panel {
  background: var(--bg-panel);
  border: 1px solid var(--border-subtle);
  border-radius: 0;
  overflow: hidden;
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--gap-sm) var(--gap-md);
  border-bottom: 1px solid var(--border-subtle);
  background: var(--bg-raised);
}
.panel-title {
  font-family: var(--font-display);
  font-size: 9px;
  font-weight: 600;
  letter-spacing: 0.15em;
  color: var(--text-muted);
}
.panel-badge {
  font-size: 9px;
  padding: 2px 6px;
  border-radius: var(--r-sm);
  background: var(--bg-hover);
  color: var(--text-secondary);
  border: 1px solid var(--border-subtle);
}
.panel-badge.green { color: var(--long-color); border-color: rgba(0,255,136,0.2); }

/* ═══════════════════════════════════════════════════════════════
   LEFT SIDEBAR
═══════════════════════════════════════════════════════════════ */
.sidebar-left {
  display: flex;
  flex-direction: column;
  border-right: 1px solid var(--border-subtle);
  overflow-y: auto;
  overflow-x: hidden;
}

/* ── MOMENTUM PANEL ──────────────────────────────────────────── */
.momentum-panel {
  flex: 0 0 auto;
  border-bottom: 1px solid var(--border-subtle);
}

.gauge-container {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--gap-md) 0 var(--gap-sm);
}
#momentumGauge {
  width: 160px;
  height: 160px;
}
.gauge-center {
  position: absolute;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  pointer-events: none;
}
.gauge-value {
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1;
  transition: color 0.3s;
}
.gauge-label {
  font-size: 8px;
  letter-spacing: 0.15em;
  color: var(--text-muted);
}

/* K/D readout */
.kd-readout {
  padding: var(--gap-sm) var(--gap-md);
  display: flex;
  flex-direction: column;
  gap: var(--gap-xs);
  border-top: 1px solid var(--border-subtle);
}
.kd-item {
  display: flex;
  align-items: center;
  gap: var(--gap-sm);
}
.kd-label {
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.1em;
  min-width: 24px;
}
.k-label   { color: #FF6B2B; }
.d-label   { color: #7B68EE; }
.sep-label { color: var(--text-muted); }

.kd-bar-wrap {
  flex: 1;
  height: 4px;
  background: var(--bg-hover);
  border-radius: 2px;
  overflow: hidden;
}
.kd-bar {
  height: 100%;
  border-radius: 2px;
  transition: width 0.3s ease;
  width: 0%;
}
.k-bar   { background: #FF6B2B; }
.d-bar   { background: #7B68EE; }
.sep-bar { background: var(--accent); }

.kd-value {
  font-size: 10px;
  font-weight: 700;
  min-width: 36px;
  text-align: right;
  color: var(--text-primary);
}

/* Compression indicator */
.compression-indicator {
  display: flex;
  align-items: center;
  gap: var(--gap-sm);
  padding: var(--gap-sm) var(--gap-md);
  border-top: 1px solid var(--border-subtle);
  background: var(--bg-base);
  transition: background 0.3s;
}
.compression-indicator.active {
  background: rgba(123, 123, 153, 0.1);
  border-top-color: var(--comp-color);
}
.comp-icon {
  font-size: 16px;
  color: var(--text-muted);
  transition: color 0.3s;
}
.compression-indicator.active .comp-icon {
  color: var(--comp-color);
  animation: compPulse 1.5s ease-in-out infinite;
}
@keyframes compPulse {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.4; }
}
.comp-text {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 1px;
}
.comp-title {
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--text-muted);
}
.comp-sub {
  font-size: 8px;
  color: var(--text-muted);
}
.compression-indicator.active .comp-title,
.compression-indicator.active .comp-sub {
  color: var(--comp-color);
}
.comp-score {
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 700;
  color: var(--text-muted);
}
.compression-indicator.active .comp-score {
  color: var(--comp-color);
}

/* ── STATE PANEL ─────────────────────────────────────────────── */
.state-panel {
  flex: 1;
}

.state-detail {
  padding: var(--gap-md);
  border-bottom: 1px solid var(--border-subtle);
}
.state-current {
  margin-bottom: var(--gap-md);
}
.state-name {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--text-primary);
  transition: color 0.3s;
}
.state-position {
  font-size: 9px;
  letter-spacing: 0.12em;
  color: var(--text-muted);
  margin-top: 2px;
}

.state-metrics {
  display: flex;
  flex-direction: column;
  gap: var(--gap-xs);
}
.metric-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 3px 0;
  border-bottom: 1px solid var(--border-subtle);
}
.metric-label {
  font-size: 8px;
  letter-spacing: 0.1em;
  color: var(--text-muted);
}
.metric-value {
  font-size: 10px;
  font-weight: 700;
  color: var(--text-primary);
}
.metric-value.warn   { color: var(--warn-color); }
.metric-value.danger { color: var(--short-color); }

/* Zone map */
.zone-map {
  padding: var(--gap-sm) var(--gap-md);
}
.zone-map-title {
  font-size: 8px;
  letter-spacing: 0.12em;
  color: var(--text-muted);
  margin-bottom: var(--gap-sm);
}
.zone-strip {
  display: flex;
  flex-direction: column;
  gap: 2px;
  position: relative;
}
.zone-item {
  font-size: 8px;
  letter-spacing: 0.06em;
  padding: 4px 8px;
  border-radius: var(--r-sm);
  border: 1px solid transparent;
  color: var(--text-muted);
  transition: all 0.3s;
  cursor: default;
}
.zone-long-dom  { border-color: rgba(0,255,136,0.15);  background: rgba(0,255,136,0.04); }
.zone-long-warn { border-color: rgba(255,184,0,0.15);  background: rgba(255,184,0,0.04); }
.zone-journey   { border-color: rgba(0,204,102,0.1);   background: rgba(0,204,102,0.02); }
.zone-transition{ border-color: rgba(136,255,204,0.1); background: rgba(136,255,204,0.02); }
.zone-short-warn{ border-color: rgba(255,136,0,0.15);  background: rgba(255,136,0,0.04); }
.zone-short-dom { border-color: rgba(255,51,102,0.15); background: rgba(255,51,102,0.04); }

.zone-item.active {
  color: var(--text-primary);
  font-weight: 700;
}
.zone-long-dom.active  { color: var(--long-color);  border-color: var(--long-color);  background: rgba(0,255,136,0.1); }
.zone-long-warn.active { color: var(--warn-color);  border-color: var(--warn-color);  background: rgba(255,184,0,0.1); }
.zone-journey.active   { color: #00CC66;            border-color: #00CC66;            background: rgba(0,204,102,0.08); }
.zone-transition.active{ color: #88FFCC;            border-color: #88FFCC;            background: rgba(136,255,204,0.08); }
.zone-short-warn.active{ color: #FF8800;            border-color: #FF8800;            background: rgba(255,136,0,0.1); }
.zone-short-dom.active { color: var(--short-color); border-color: var(--short-color); background: rgba(255,51,102,0.1); }

/* ═══════════════════════════════════════════════════════════════
   CHART SECTION
═══════════════════════════════════════════════════════════════ */
.chart-section {
  display: flex;
  flex-direction: column;
  background: var(--bg-base);
  border-left: 1px solid var(--border-subtle);
  border-right: 1px solid var(--border-subtle);
  overflow: hidden;
}

.chart-wrapper {
  flex: 1;
  position: relative;
  overflow: hidden;
}
#mainChart {
  position: absolute;
  top: 0; left: 0;
  width: 100%;
  height: 100%;
  display: block;
  cursor: crosshair;
}

.chart-footer {
  flex: 0 0 auto;
  height: 28px;
  background: var(--bg-panel);
  border-top: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  padding: 0 var(--gap-md);
  gap: var(--gap-xl);
}
.regime-display, .bar-counter, .last-transition {
  display: flex;
  align-items: center;
  gap: var(--gap-sm);
}
.regime-label, .bar-label, .trans-label {
  font-size: 8px;
  letter-spacing: 0.1em;
  color: var(--text-muted);
}
.regime-value, .bar-value, .trans-value {
  font-size: 9px;
  color: var(--text-secondary);
}
.regime-value { color: var(--accent); }

/* ═══════════════════════════════════════════════════════════════
   RIGHT SIDEBAR
═══════════════════════════════════════════════════════════════ */
.sidebar-right {
  display: flex;
  flex-direction: column;
  border-left: 1px solid var(--border-subtle);
  overflow: hidden;
}

/* ── STATS PANEL ─────────────────────────────────────────────── */
.stats-panel {
  flex: 0 0 auto;
  border-bottom: 1px solid var(--border-subtle);
}

.stats-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
}
.stat-cell {
  background: var(--bg-panel);
  padding: var(--gap-sm) var(--gap-md);
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.stat-cell-label {
  font-size: 7px;
  letter-spacing: 0.1em;
  color: var(--text-muted);
}
.stat-cell-value {
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
  transition: color 0.3s;
}
.stat-cell-value.green  { color: var(--long-color); }
.stat-cell-value.danger { color: var(--short-color); }

/* Equity chart */
.equity-chart-wrap {
  padding: var(--gap-sm) var(--gap-md);
}
.equity-chart-label {
  font-size: 8px;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  margin-bottom: var(--gap-xs);
}
#equityChart {
  width: 100%;
  display: block;
  border-radius: var(--r-sm);
}

/* ── TRADE LOG ───────────────────────────────────────────────── */
.tradelog-panel {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.btn-tiny {
  font-family: var(--font-mono);
  font-size: 8px;
  padding: 2px 6px;
  background: transparent;
  border: 1px solid var(--border-mid);
  border-radius: var(--r-sm);
  color: var(--text-muted);
  cursor: pointer;
  letter-spacing: 0.08em;
}
.btn-tiny:hover {
  color: var(--text-primary);
  border-color: var(--border-bright);
}

.tradelog-scroll {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
}

.tradelog-empty {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 80px;
  color: var(--text-muted);
  font-size: 9px;
  letter-spacing: 0.08em;
  font-style: italic;
}

.tradelog-list {
  display: flex;
  flex-direction: column;
}

/* Log entry */
.log-entry {
  padding: var(--gap-sm) var(--gap-md);
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  flex-direction: column;
  gap: 3px;
  transition: background 0.15s;
  animation: logSlideIn 0.25s ease-out;
}
@keyframes logSlideIn {
  from { opacity: 0; transform: translateX(8px); }
  to   { opacity: 1; transform: translateX(0); }
}
.log-entry:hover { background: var(--bg-hover); }

.log-entry-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--gap-sm);
}
.log-entry-type {
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.08em;
  padding: 1px 5px;
  border-radius: 2px;
}
.log-type-open-long  { color: var(--long-color);  background: var(--long-dim);  }
.log-type-open-short { color: var(--short-color); background: var(--short-dim); }
.log-type-close      { color: var(--warn-color);  background: var(--warn-dim);  }
.log-type-transition { color: var(--text-secondary); background: var(--bg-hover); }
.log-type-override   { color: var(--accent);      background: var(--accent-dim); }
.log-type-compress   { color: var(--comp-color);  background: var(--comp-dim);  }

.log-entry-bar {
  font-size: 8px;
  color: var(--text-muted);
}
.log-entry-detail {
  font-size: 9px;
  color: var(--text-secondary);
  line-height: 1.4;
}
.log-entry-pnl {
  font-size: 10px;
  font-weight: 700;
}
.log-entry-pnl.profit { color: var(--long-color); }
.log-entry-pnl.loss   { color: var(--short-color); }

/* ═══════════════════════════════════════════════════════════════
   MOMENTUM GAUGE CANVAS STATES
═══════════════════════════════════════════════════════════════ */
.gauge-value.long  { color: var(--long-color); }
.gauge-value.short { color: var(--short-color); }
.gauge-value.comp  { color: var(--comp-color); }
.gauge-value.warn  { color: var(--warn-color); }

/* ═══════════════════════════════════════════════════════════════
   STATE-DRIVEN DYNAMIC COLORS
═══════════════════════════════════════════════════════════════ */
.state-name.LONG_HOLD,
.state-name.LONG_WARN    { color: var(--long-color); }
.state-name.SHORT_HOLD,
.state-name.SHORT_WARN   { color: var(--short-color); }
.state-name.COMPRESSION  { color: var(--comp-color); }
.state-name.LONG_TRANSIT { color: #88FFCC; }
.state-name.SHORT_TRANSIT{ color: #FF8888; }
.state-name.NEUTRAL      { color: var(--text-muted); }

/* ═══════════════════════════════════════════════════════════════
   SCAN LINES (subtle CRT texture)
═══════════════════════════════════════════════════════════════ */
.app-main::after {
  content: '';
  position: fixed;
  top: var(--header-h);
  left: 0; right: 0; bottom: 0;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 2px,
    rgba(0,0,0,0.03) 2px,
    rgba(0,0,0,0.03) 4px
  );
  pointer-events: none;
  z-index: 200;
}

/* ═══════════════════════════════════════════════════════════════
   RESPONSIVE
═══════════════════════════════════════════════════════════════ */
@media (max-width: 1200px) {
  :root { --sidebar-w: 200px; }
}
@media (max-width: 900px) {
  .sidebar-left, .sidebar-right { display: none; }
  .app-main { grid-template-columns: 1fr; }
}