/* ═══════════════════════════════════════════════════════
   TechCalc Pro — Components
   Glass cards · Inputs · Buttons · Output blocks
═══════════════════════════════════════════════════════ */

/* ─── GLASS CARD ─── */
.gc {
  background:var(--glass-low);
  border:1px solid var(--gb-mid);
  border-radius:var(--r-xl);
  backdrop-filter:saturate(160%) blur(24px);
  -webkit-backdrop-filter:saturate(160%) blur(24px);
  padding:var(--pad);
  position:relative; overflow:hidden; flex-shrink:0;
  box-shadow:
    0 2px 0 0 rgba(255,255,255,0.06) inset,
    0 -1px 0 0 rgba(0,0,0,0.3) inset,
    0 8px 32px rgba(0,0,0,0.55),
    0 2px 8px rgba(0,0,0,0.35);
  animation:fadeUp .30s ease both;
}
.gc::before {
  content:''; position:absolute; top:0; left:0; right:0; height:1px;
  background:var(--shimmer); pointer-events:none;
}

/* Tints */
.gc-h {
  background:linear-gradient(155deg, rgba(255,107,53,0.10) 0%, var(--glass-low) 52%);
  border-color:rgba(255,107,53,0.28);
}
.gc-c {
  background:linear-gradient(155deg, rgba(0,196,232,0.08) 0%, var(--glass-low) 52%);
  border-color:rgba(0,196,232,0.22);
}
.gc-h:focus-within {
  border-color:rgba(255,107,53,0.52);
  box-shadow:0 2px 0 0 rgba(255,255,255,0.06) inset,0 -1px 0 0 rgba(0,0,0,0.3) inset,
             0 8px 32px rgba(0,0,0,0.55),0 0 24px rgba(255,107,53,0.10);
}
.gc-c:focus-within {
  border-color:rgba(0,196,232,0.48);
  box-shadow:0 2px 0 0 rgba(255,255,255,0.06) inset,0 -1px 0 0 rgba(0,0,0,0.3) inset,
             0 8px 32px rgba(0,0,0,0.55),0 0 24px rgba(0,196,232,0.09);
}
.gc, .out-card, .gc-h, .gc-c, .gc-a { overflow:hidden; }

/* ─── OUTPUT CARD ─── */
.out-card {
  background:var(--glass-low); border:1px solid var(--gb-mid);
  border-radius:var(--r-xl); padding:var(--pad); flex-shrink:0;
  box-shadow:0 2px 0 0 rgba(255,255,255,0.06) inset, 0 8px 32px rgba(0,0,0,0.55);
  position:relative; overflow:hidden; animation:fadeUp .30s ease both;
}
.out-card::before { content:''; position:absolute; top:0; left:0; right:0; height:1px; background:var(--shimmer); }
.out-grid { display:grid; grid-template-columns:1fr 1fr; gap:var(--gap-s); }

/* Output blocks (Heizung / Kälte) */
.ob {
  background:var(--glass-mid); border:1px solid var(--gb-soft);
  border-radius:var(--r-l); padding:14px; position:relative; overflow:hidden;
}
.ob::before { content:''; position:absolute; top:0; left:0; right:0; height:1px; }
.ob-h { border-color:rgba(255,107,53,0.22); }
.ob-h::before { background:linear-gradient(90deg,transparent,rgba(255,107,53,0.60),transparent); }
.ob-c { border-color:rgba(0,196,232,0.18); }
.ob-c::before { background:linear-gradient(90deg,transparent,rgba(0,196,232,0.55),transparent); }
.ob-title { display:flex; align-items:center; gap:7px; margin-bottom:14px; }
.ob-title-lbl { font-family:var(--f); font-size:11px; font-weight:700; letter-spacing:.13em; text-transform:uppercase; }
.ob-h .ob-title-lbl { color:var(--heat-t); }
.ob-c .ob-title-lbl { color:var(--cold-t); }
.out-row { margin-bottom:10px; }
.out-row:last-child { margin-bottom:0; }
.out-key { font-family:var(--f); font-size:11px; font-weight:700; letter-spacing:.06em; color:var(--t3); margin-bottom:4px; }
.out-val { font-family:var(--fm); font-weight:700; line-height:1; font-size:clamp(18px,3.8vw,26px); transition:color .22s; }
.out-val .u { font-size:12px; font-weight:400; margin-left:3px; color:var(--t3); }
.ob-h .out-val { color:var(--t4); } .ob-h .out-val.has { color:var(--out-h); }
.ob-c .out-val { color:var(--t4); } .ob-c .out-val.has { color:var(--out-c); }

/* ─── LABELS ─── */
.slbl {
  font-family:var(--f); font-size:11px; font-weight:700;
  letter-spacing:.15em; text-transform:uppercase;
  color:var(--t3); margin-bottom:14px;
}
.ptitle { display:flex; align-items:center; gap:8px; margin-bottom:14px; }
.dot { width:7px; height:7px; border-radius:50%; flex-shrink:0; }
.dot-h { background:var(--heat); box-shadow:0 0 7px var(--heat); }
.dot-c { background:var(--cold); box-shadow:0 0 7px var(--cold); }
.ptitle-lbl { font-family:var(--f); font-size:12px; font-weight:700; letter-spacing:.12em; text-transform:uppercase; }
.gc-h .ptitle-lbl { color:var(--heat-t); } .gc-c .ptitle-lbl { color:var(--cold-t); }

/* ─── MODE SWITCHER ─── */
.modes {
  display:grid; grid-template-columns:repeat(3,1fr); gap:4px;
  background:rgba(0,0,0,0.35); border:1px solid var(--gb-soft);
  border-radius:var(--r-m); padding:4px; margin-bottom:var(--gap-l);
}
.mbtn {
  background:transparent; border:1px solid transparent;
  color:var(--t3); font-family:var(--f); font-size:13px; font-weight:600;
  padding:8px 4px; border-radius:var(--r-s);
  cursor:pointer; transition:all .15s; text-align:center;
  white-space:nowrap; overflow:hidden; text-overflow:ellipsis;
}
.mbtn:hover { color:var(--t1); }
.mbtn.active {
  background:var(--glass-raise); border-color:var(--gb-mid); color:var(--t1);
  box-shadow:inset 0 1px 0 rgba(255,255,255,0.12), 0 2px 6px rgba(0,0,0,0.4);
}

/* ─── INPUT GROUPS ─── */
.igrp { display:flex; flex-direction:column; gap:6px; margin-bottom:var(--gap); }
.igrp:last-of-type { margin-bottom:0; }
.ilbl { font-family:var(--f); font-size:11px; font-weight:700; letter-spacing:.13em; text-transform:uppercase; color:var(--t3); }
.iwrap { position:relative; }

.inp {
  width:100%; background:var(--glass-mid); border:1px solid var(--gb-strong);
  color:var(--t1); font-family:var(--fm); font-size:20px; font-weight:700;
  padding:13px 52px 13px 14px; border-radius:var(--r-m); outline:none;
  box-shadow:inset 0 2px 4px rgba(0,0,0,0.35), inset 0 1px 0 rgba(255,255,255,0.04);
  transition:border-color .15s, background .15s, box-shadow .15s;
  -webkit-appearance:none;
}
.inp::placeholder { color:var(--t4); font-weight:400; }
.inp:focus {
  background:var(--glass-high); border-color:var(--gb-accent);
  box-shadow:inset 0 2px 4px rgba(0,0,0,0.3), 0 0 0 3px rgba(255,255,255,0.06);
}
.gc-h .inp:focus { border-color:rgba(255,107,53,0.60); box-shadow:inset 0 2px 4px rgba(0,0,0,0.3),0 0 0 3px rgba(255,107,53,0.10); }
.gc-c .inp:focus { border-color:rgba(0,196,232,0.55);  box-shadow:inset 0 2px 4px rgba(0,0,0,0.3),0 0 0 3px rgba(0,196,232,0.09); }

.inp-sm {
  width:100%; background:var(--glass-low); border:1px solid var(--gb-mid);
  color:var(--t1); font-family:var(--fm); font-size:16px; font-weight:600;
  padding:11px 52px 11px 14px; border-radius:var(--r-m); outline:none;
  box-shadow:inset 0 1px 3px rgba(0,0,0,0.30); transition:border-color .15s;
  -webkit-appearance:none;
}
.inp-sm:focus { border-color:var(--gb-strong); outline:none; }
.gc-h .inp-sm:focus { border-color:rgba(255,107,53,0.50); }
.gc-c .inp-sm:focus { border-color:rgba(0,196,232,0.45); }

.inp-ro {
  width:100%; background:rgba(79,168,255,0.10); border:1.5px solid rgba(79,168,255,0.45);
  color:var(--blue); font-family:var(--fm); font-size:20px; font-weight:700;
  padding:13px 52px 13px 14px; border-radius:var(--r-m);
  pointer-events:none; user-select:text;
  box-shadow:inset 0 1px 0 rgba(79,168,255,0.08), 0 0 16px rgba(79,168,255,0.06);
  transition:color .2s;
}
.inp-ro.empty {
  color:var(--t4); background:rgba(255,255,255,0.03);
  border-color:rgba(255,255,255,0.10); box-shadow:none;
}
.iunit {
  position:absolute; right:14px; top:50%; transform:translateY(-50%);
  font-family:var(--f); font-size:12px; font-weight:700;
  color:rgba(255,255,255,0.40); pointer-events:none;
}

/* ─── SELECT ─── */
.gl-sel {
  width:100%; background:var(--glass-mid); border:1px solid var(--gb-strong);
  color:var(--t1); font-family:var(--f); font-size:13px; font-weight:600;
  padding:12px 36px 12px 14px; border-radius:var(--r-m);
  outline:none; appearance:none; cursor:pointer;
  backdrop-filter:blur(12px); -webkit-backdrop-filter:blur(12px);
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='rgba(255,255,255,.5)' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat:no-repeat; background-position:right 13px center;
  box-shadow:inset 0 1px 0 rgba(255,255,255,0.10); transition:border-color .15s;
}
.gl-sel:focus { border-color:var(--blue); }
.gl-sel option { background:#1c1c1e; color:#fff; }

/* Category select (Einheitenrechner — green accent) */
.cat-sel {
  width:100%; background:var(--glass-mid); border:1px solid var(--grn-b);
  color:var(--t1); font-family:var(--f); font-size:15px; font-weight:600;
  padding:13px 38px 13px 14px; border-radius:var(--r-m);
  outline:none; appearance:none; cursor:pointer;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='rgba(52,211,153,.7)' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat:no-repeat; background-position:right 13px center;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08), 0 0 0 1px rgba(52,211,153,.12);
  transition:border-color .15s;
}
.cat-sel:focus { border-color:var(--grn); box-shadow:inset 0 1px 0 rgba(255,255,255,.08),0 0 0 3px rgba(52,211,153,.12); }
.cat-sel option { background:#1c1c1e; color:#fff; }

/* ─── CHIPS ─── */
.chips { display:flex; flex-wrap:wrap; gap:6px; margin-top:10px; }
.chip {
  background:var(--glass-mid); border:1px solid var(--gb-soft);
  border-radius:8px; padding:4px 10px;
  font-family:var(--fm); font-size:12px; color:var(--t2);
  box-shadow:inset 0 1px 0 rgba(255,255,255,0.07);
}
.chip strong { color:var(--blue); }

/* ─── HK SWITCH BUTTON ─── */
.hk-btn {
  display:flex; align-items:center; justify-content:center; gap:7px;
  font-family:var(--f); font-size:12px; font-weight:600;
  padding:10px 8px; border-radius:var(--r-m);
  border:1px solid transparent; cursor:pointer;
  background:transparent; color:var(--t3); transition:all .18s;
}
.hk-btn.on-h {
  background:rgba(255,107,53,.15); border-color:rgba(255,107,53,.35); color:var(--heat-t);
  box-shadow:inset 0 1px 0 rgba(255,107,53,.12), 0 2px 6px rgba(0,0,0,.35);
}
.hk-btn.on-k {
  background:rgba(0,196,232,.12); border-color:rgba(0,196,232,.30); color:var(--cold-t);
  box-shadow:inset 0 1px 0 rgba(0,196,232,.10), 0 2px 6px rgba(0,0,0,.35);
}

/* ─── W/kW UNIT PILL ─── */
.unit-pill { display:flex; gap:2px; background:rgba(0,0,0,.35); border:1px solid var(--gb-soft); border-radius:8px; padding:2px; flex-shrink:0; }
.up-btn { font-family:var(--f); font-size:11px; font-weight:700; padding:3px 8px; border:none; border-radius:6px; background:transparent; color:var(--t3); cursor:pointer; transition:all .15s; }
.up-btn.active { background:var(--glass-raise); color:var(--t1); box-shadow:inset 0 1px 0 rgba(255,255,255,.12); }
.ilbl-row { display:flex; justify-content:space-between; align-items:center; margin-bottom:0; }

/* ─── FORMULA ─── */
.fml { text-align:center; font-family:var(--fm); font-size:12px; color:var(--t3); line-height:1.9; flex-shrink:0; }
.fml em { color:var(--t2); font-style:normal; }

/* ─── PIPE MINI CARDS ─── */
.pm {
  background:var(--glass-mid); border:1px solid var(--gb-soft);
  border-radius:var(--r-l); padding:13px; position:relative; overflow:hidden;
  box-shadow:inset 0 1px 0 rgba(255,255,255,0.07), 0 4px 12px rgba(0,0,0,0.35);
}
.pm::before { content:''; position:absolute; top:0; left:0; right:0; height:1px; background:linear-gradient(90deg,transparent,rgba(255,255,255,0.14) 50%,transparent); }
.pm.best   { border-color:rgba(79,168,255,0.45);  background:rgba(79,168,255,0.07);  box-shadow:inset 0 1px 0 rgba(79,168,255,0.12), 0 0 18px rgba(79,168,255,0.08); }
.pm.best-h { border-color:rgba(255,107,53,0.50);  background:rgba(255,107,53,0.08);  box-shadow:inset 0 1px 0 rgba(255,107,53,0.14), 0 0 18px rgba(255,107,53,0.09); }
.pm.best-k { border-color:rgba(0,196,232,0.48);   background:rgba(0,196,232,0.07);   box-shadow:inset 0 1px 0 rgba(0,196,232,0.12), 0 0 18px rgba(0,196,232,0.08); }
.pm.over { border-color:rgba(255,69,58,0.30); background:rgba(255,69,58,0.04); }
.pm.na   { opacity:0.5; }
.pm-std { font-family:var(--f); font-size:10px; font-weight:700; letter-spacing:.10em; text-transform:uppercase; color:var(--t3); margin-bottom:5px; display:flex; align-items:center; gap:4px; flex-wrap:wrap; }
.pm-std.mp { color:var(--blue); }
.star { background:rgba(79,168,255,0.18); border:1px solid rgba(79,168,255,0.35); color:var(--blue); font-family:var(--f); font-size:10px; font-weight:700; padding:1px 5px; border-radius:4px; }
.pm-dn { font-family:var(--fm); font-size:17px; font-weight:700; color:var(--t1); margin-bottom:2px; }
.pm-dim { font-family:var(--fm); font-size:11px; color:var(--t3); margin-bottom:9px; line-height:1.5; }
.pm-r { display:flex; justify-content:space-between; align-items:baseline; margin-bottom:3px; }
.pm-k { font-family:var(--f); font-size:10px; text-transform:uppercase; letter-spacing:.08em; color:var(--t3); }
.pm-v { font-family:var(--fm); font-size:13px; font-weight:700; }
.pm-na-txt { font-family:var(--f); font-size:13px; color:var(--t3); text-align:center; padding:16px 8px; line-height:1.5; }
.dpbar { height:3px; border-radius:2px; background:rgba(255,255,255,0.08); overflow:hidden; margin-top:8px; }
.dpfill { height:100%; border-radius:2px; transition:width .38s ease; }

/* ─── MISC ─── */
.legend { display:flex; gap:10px; flex-wrap:wrap; padding-top:10px; border-top:1px solid var(--gb-soft); flex-shrink:0; }
.info-txt { font-family:var(--f); font-size:12px; color:var(--t3); line-height:1.65; flex-shrink:0; }
.placeholder { text-align:center; padding:28px 20px; flex-shrink:0; }
.placeholder-icon { font-size:30px; opacity:.2; margin-bottom:10px; }
.placeholder-txt { font-family:var(--f); font-size:13px; color:var(--t3); line-height:1.6; }
.rcol-hdr { display:none; font-family:var(--f); font-size:13px; font-weight:700; letter-spacing:.08em; text-transform:uppercase; color:var(--t2); flex-shrink:0; }
@media (min-width:900px) { .rcol-hdr { display:block; } }
.psec { display:flex; align-items:center; gap:7px; margin-bottom:8px; flex-shrink:0; }
.psec-lbl { font-family:var(--f); font-size:12px; font-weight:700; text-transform:uppercase; letter-spacing:.09em; }
.psec-vol { font-family:var(--fm); font-size:12px; color:var(--t3); margin-left:3px; }

/* Unit converter rows */
.unit-row { display:flex; justify-content:space-between; align-items:baseline; padding:8px 11px; border-radius:var(--r-s); background:rgba(255,255,255,.04); border:1px solid rgba(255,255,255,.07); }
.unit-row.uh { background:rgba(52,211,153,.07); border-color:rgba(52,211,153,.22); }
.unit-row.uh .unit-k, .unit-row.uh .unit-v { color:var(--grn); }
.unit-k { font-family:var(--f); font-size:11px; font-weight:600; color:var(--t2); }
.unit-v { font-family:var(--fm); font-size:13px; font-weight:700; color:var(--t1); }

/* Zuluft pill card */
.tzl-grid { display:grid; grid-template-columns:1fr 1fr; gap:0; }
.tzl-side { padding:12px 16px; }
.tzl-side:first-child { border-right:1px solid var(--gb-soft); }
.tzl-lbl { font-family:var(--f); font-size:11px; font-weight:700; letter-spacing:.13em; text-transform:uppercase; margin-bottom:8px; }
.tzl-h .tzl-lbl { color:var(--heat-t); } .tzl-k .tzl-lbl { color:var(--cold-t); }
.tzl-inp {
  width:100%; background:var(--glass-mid); border:1px solid var(--gb-strong);
  color:var(--t1); font-family:var(--fm); font-size:18px; font-weight:700;
  padding:10px 46px 10px 12px; border-radius:var(--r-m); outline:none;
  -webkit-appearance:none; box-shadow:inset 0 2px 4px rgba(0,0,0,.35); transition:border-color .15s;
}
.tzl-inp::placeholder { color:var(--t4); font-weight:400; }
.tzl-h .tzl-inp:focus { border-color:rgba(255,107,53,.60); }
.tzl-k .tzl-inp:focus { border-color:rgba(0,196,232,.55); }

/* ─── HX DIAGRAM COMPONENTS ─── */
.hx-cvs-wrap {
  min-height:360px; border-radius:var(--r-xl); overflow:hidden;
  background:radial-gradient(circle at top left, rgba(20,50,120,0.20), rgba(0,0,0,0.94));
  border:1px solid rgba(255,255,255,0.05);
  box-shadow:inset 0 1px 0 rgba(255,255,255,0.03);
  position:relative;
}
.hx-cvs-wrap::before {
  content:''; position:absolute; inset:0; pointer-events:none;
  background:linear-gradient(rgba(255,255,255,0.015) 1px, transparent 1px),
              linear-gradient(90deg, rgba(255,255,255,0.015) 1px, transparent 1px);
  background-size:32px 32px; opacity:0.35;
}
.hx-cvs-wrap::after {
  content:''; position:absolute; inset:0; pointer-events:none;
  background:radial-gradient(circle at 20% 20%, rgba(90,110,255,0.08), transparent 45%);
}
#hxCanvas { width:100%; height:100%; display:block; min-height:360px; }
#hx-tip { position:fixed; display:none; z-index:9999; pointer-events:none; }

/* ─── ANIMATIONS ─── */
@keyframes fadeUp { from { opacity:0; transform:translateY(12px); } to { opacity:1; transform:translateY(0); } }
@keyframes fadeIn { from { opacity:0; } to { opacity:1; } }