/* ═══════════════════════════════════════════
   TrainControl — Components
   ═══════════════════════════════════════════ */

/* ── Glass card ── */
.glass {
  background: var(--glass-bg);
  backdrop-filter: blur(var(--blur)); -webkit-backdrop-filter: blur(var(--blur));
  border: 1px solid var(--glass-border);
  border-radius: var(--r-lg);
  box-shadow: 0 12px 40px var(--shadow), inset 0 0.5px 0 rgba(255,255,255,0.07);
  transition: transform 0.2s var(--ease), box-shadow 0.2s var(--ease);
}
[data-theme="light"] .glass { box-shadow: 0 8px 30px var(--shadow), inset 0 0.5px 0 rgba(255,255,255,0.5); }

/* ── Buttons ── */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 5px;
  height: 34px; padding: 0 14px; border: none; cursor: pointer;
  font: 600 13px/1 'DM Sans', sans-serif;
  border-radius: var(--r-pill); color: var(--text);
  transition: all 0.18s var(--ease);
  white-space: nowrap; user-select: none;
}
.btn:active { transform: scale(0.94); }

.btn-glass { background: var(--glass-bg); border: 1px solid var(--glass-border); }
.btn-glass:hover { background: var(--glass-bg-hover); }
.btn-blue { background: linear-gradient(135deg, var(--blue), var(--blue-dk)); box-shadow: 0 3px 10px rgba(68,89,143,0.4); }
.btn-blue:hover { box-shadow: 0 5px 14px rgba(68,89,143,0.5); transform: translateY(-1px); }
.btn-red { background: linear-gradient(135deg, var(--red), #a0333a); box-shadow: 0 3px 10px rgba(209,69,77,0.35); }
.btn-green { background: linear-gradient(135deg, var(--green), #2d8f5a); }
.btn-violet { background: linear-gradient(135deg, var(--violet), var(--violet-dk)); box-shadow: 0 3px 10px rgba(133,107,184,0.3); }
.btn-orange { background: linear-gradient(135deg, var(--orange), #c07028); box-shadow: 0 3px 10px rgba(230,126,34,0.3); }
.btn-icon { width: 34px; height: 34px; padding: 0; border-radius: 50%; font-size: 15px; }
.btn-sm { height: 26px; padding: 0 10px; font-size: 11px; }

[data-theme="light"] .btn-blue, [data-theme="light"] .btn-red,
[data-theme="light"] .btn-violet, [data-theme="light"] .btn-orange,
[data-theme="light"] .btn-green { color: #fff; }
[data-theme="light"] .btn-glass { background: rgba(0,0,0,0.05); border-color: rgba(0,0,0,0.1); }
[data-theme="light"] .btn-glass:hover { background: rgba(0,0,0,0.08); }

/* ── Status dot ── */
.dot { width: 9px; height: 9px; border-radius: 50%; transition: all 0.3s var(--ease); flex-shrink: 0; }
.dot.on { background: var(--green); box-shadow: 0 0 7px rgba(77,166,120,0.6); }
.dot.off { background: #555; }
[data-theme="light"] .dot.off { background: #bbb; }

/* ── Power button ── */
.pwr {
  height: 34px; padding: 0 13px; border-radius: var(--r-pill);
  font: 700 12px/34px 'DM Sans', sans-serif; cursor: pointer;
  border: 2px solid transparent; transition: all 0.2s var(--ease);
  display: inline-flex; align-items: center; justify-content: center;
}
.pwr.on { color: var(--green); border-color: rgba(77,166,120,0.3); background: rgba(77,166,120,0.08); }
.pwr.off { color: var(--red); border-color: rgba(209,69,77,0.3); background: rgba(209,69,77,0.08); }
[data-theme="light"] .pwr.on { background: rgba(77,166,120,0.12); }
[data-theme="light"] .pwr.off { background: rgba(209,69,77,0.12); }

/* ── Speed slider ── */
.spd-wrap { display: flex; flex-direction: column; align-items: center; gap: 8px; width: 62px; flex-shrink: 0; }
.spd-label { font-size: 11px; font-weight: 600; color: var(--text2); }
.spd-track {
  position: relative; width: 58px; height: 270px;
  background: rgba(255,255,255,0.04);
  border-radius: var(--r-lg); overflow: hidden; cursor: pointer;
  border: 1px solid rgba(255,255,255,0.06);
  touch-action: none; user-select: none;
}
.spd-fill {
  position: absolute; bottom: 0; left: 0; right: 0;
  background: linear-gradient(to top, var(--blue-dk), var(--blue));
  border-radius: var(--r-lg);
  transition: height 60ms linear;
  pointer-events: none;
}
.spd-val {
  position: absolute; bottom: 8px; left: 0; right: 0;
  text-align: center; font: 700 17px/1 'JetBrains Mono', monospace;
  color: #fff; text-shadow: 0 2px 6px rgba(0,0,0,0.6);
  z-index: 2; pointer-events: none;
}
.spd-stop {
  width: 58px; height: 38px; border: none; cursor: pointer;
  background: linear-gradient(135deg, var(--red), #a0333a);
  border-radius: var(--r-pill);
  font-size: 15px; color: #fff;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 3px 8px rgba(209,69,77,0.35);
  transition: transform 0.15s var(--ease);
}
.spd-stop:active { transform: scale(0.92); }

[data-theme="light"] .spd-track { background: rgba(0,0,0,0.08); border-color: rgba(0,0,0,0.1); }
[data-theme="light"] .spd-val { color: #fff; }
[data-theme="light"] .spd-stop { box-shadow: 0 3px 8px rgba(209,69,77,0.25); }

/* ── Direction button ── */
.dir-btn {
  display: flex; align-items: center; justify-content: center; gap: 7px;
  width: 100%; padding: 13px; border: none; cursor: pointer;
  font: 600 14px/1 'DM Sans', sans-serif;
  border-radius: var(--r-pill); color: #fff;
  transition: all 0.35s var(--spring);
}
.dir-btn.fwd { background: linear-gradient(135deg, var(--green), rgba(77,166,120,0.75)); }
.dir-btn.rev { background: linear-gradient(135deg, var(--orange), var(--red)); }
.dir-btn:active { transform: scale(0.96); }

/* ── Function buttons ── */
.fn-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 7px; }
.fn-grid.adv { display: flex; gap: 7px; overflow-x: auto; padding-bottom: 3px; -ms-overflow-style: none; scrollbar-width: none; }
.fn-grid.adv::-webkit-scrollbar { display: none; }
.fn-grid.adv .fn-btn { min-width: 58px; flex-shrink: 0; }

.fn-btn {
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 2px;
  height: 66px; border: none; cursor: pointer; font-family: inherit;
  border-radius: var(--r-pill);
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.05);
  color: var(--text); transition: all 0.18s var(--ease);
}
.fn-btn:active { transform: scale(0.91); }
.fn-btn.on {
  background: linear-gradient(135deg, var(--blue), var(--blue-dk));
  border-color: rgba(68,89,143,0.35); color: #fff;
  box-shadow: 0 3px 10px rgba(68,89,143,0.25);
}
.fn-btn .fn-ico { font-size: 17px; height: 20px; display: flex; align-items: center; }
.fn-btn .fn-lbl { font-size: 10px; font-weight: 600; }
.fn-btn .fn-sub { font-size: 7px; color: var(--text3); }

[data-theme="light"] .fn-btn { background: rgba(0,0,0,0.06); border-color: rgba(0,0,0,0.08); color: #333; }
[data-theme="light"] .fn-btn:hover { background: rgba(0,0,0,0.10); }
[data-theme="light"] .fn-btn.on { color: #fff; }

/* ── E-function buttons ── */
.ef-btn {
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 2px;
  min-width: 76px; height: 66px; border: none; cursor: pointer; font-family: inherit;
  border-radius: var(--r-pill); flex-shrink: 0;
  background: rgba(133,107,184,0.15); border: 1px solid rgba(133,107,184,0.15);
  color: var(--text); transition: all 0.18s var(--ease);
}
.ef-btn.run { background: linear-gradient(135deg, var(--violet), var(--violet-dk)); color: #fff; box-shadow: 0 3px 10px rgba(133,107,184,0.35); }
[data-theme="light"] .ef-btn { background: rgba(133,107,184,0.12); border-color: rgba(133,107,184,0.18); color: #444; }

/* ── Loco card ── */
.loco-card { padding: 18px; }
.loco-hdr { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; }
.loco-av {
  width: 52px; height: 52px; border-radius: 11px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  font-size: 22px; overflow: hidden; cursor: pointer;
  background: linear-gradient(135deg, var(--blue), var(--blue-dk));
}
.loco-av img { width: 100%; height: 100%; object-fit: cover; }
.loco-av.grp { background: linear-gradient(135deg, var(--violet), var(--violet-dk)); }
.loco-info { flex: 1; min-width: 0; }
.loco-name { font-size: 17px; font-weight: 700; letter-spacing: -0.2px; }
.loco-sub { font-size: 11px; color: var(--text2); margin-top: 1px; }
.loco-ctrl { display: flex; gap: 18px; }
.loco-right { display: flex; flex-direction: column; gap: 10px; flex: 1; min-width: 0; }
.sec-lbl { font-size: 10px; font-weight: 600; color: var(--text2); text-transform: uppercase; letter-spacing: 0.6px; margin-bottom: 3px; }
.divider { height: 1px; background: rgba(255,255,255,0.05); margin: 10px 0; }

[data-theme="light"] .divider { background: rgba(0,0,0,0.08); }
[data-theme="light"] .sec-lbl { color: rgba(0,0,0,0.45); }
[data-theme="light"] .loco-sub { color: rgba(0,0,0,0.45); }

/* ── Composition badges ── */
.comp { display: flex; gap: 5px; flex-wrap: wrap; margin-bottom: 10px; }
.comp-b {
  display: inline-flex; align-items: center; gap: 3px;
  padding: 3px 9px; border-radius: var(--r-pill);
  font-size: 10px; font-weight: 600;
  background: rgba(133,107,184,0.12); border: 1px solid rgba(133,107,184,0.15);
}
.comp-b.lead { background: rgba(77,166,120,0.12); border-color: rgba(77,166,120,0.2); }
.comp-b.dpu { background: rgba(209,69,77,0.12); border-color: rgba(209,69,77,0.2); }

[data-theme="light"] .comp-b { color: #333; }
[data-theme="light"] .comp-b.lead { background: rgba(77,166,120,0.1); border-color: rgba(77,166,120,0.2); }
[data-theme="light"] .comp-b.dpu { background: rgba(209,69,77,0.1); border-color: rgba(209,69,77,0.2); }

/* ── Empty state ── */
.empty { display: flex; flex-direction: column; align-items: center; justify-content: center; padding: 56px 20px; text-align: center; gap: 10px; }
.empty-ico { font-size: 44px; opacity: 0.25; }
.empty-txt { font-size: 15px; color: var(--text2); }