/* ============================================================
   Lihappy Variation Fields — Waycred Design / Frontend
   ============================================================ */

:root {
  --ink: #0a0a0a;
  --paper: #f4f1ea;
  --paper-warm: #ebe5d7;
  --steel: #1c1c1c;
  --steel-soft: #2a2a2a;
  --line: #c9c2b0;
  --line-strong: #6b6356;
  --accent: #e8430a;
  --accent-glow: #ff6a3d;
  --accent-deep: #b9320a;
  --hi: #ffd400;
  --ok: #2d7a4f;
  --warn: #d97706;
  --muted: #7b7466;
  --gray: #8a8378;
}

/* ---------- Root ---------- */
.lw-root {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 32px;
  font-family: 'Manrope', sans-serif;
  font-weight: 400;
  line-height: 1.5;
  color: var(--ink);
  letter-spacing: -0.005em;
  -webkit-font-smoothing: antialiased;
  background:
    linear-gradient(to right, rgba(0,0,0,0.04) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(0,0,0,0.04) 1px, transparent 1px),
    radial-gradient(ellipse 80% 50% at 50% 0%, rgba(232,67,10,0.06), transparent);
  background-size: 24px 24px, 24px 24px, 100% 100%;
}

.lw-root * { box-sizing: border-box; margin: 0; padding: 0; }

/* ---------- Hero ---------- */
.lw-hero { padding: 48px 0 32px; }
.lw-hero-tag {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 600;
  margin-bottom: 18px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.lw-hero-tag::before {
  content: "";
  display: inline-block;
  width: 32px;
  height: 1px;
  background: var(--accent);
}
.lw-hero-title {
  font-family: 'Manrope', sans-serif;
  font-size: clamp(36px, 5vw, 64px);
  font-weight: 800;
  line-height: 0.95;
  letter-spacing: -0.045em;
  color: var(--ink);
}
.lw-hero-title em {
  font-style: normal;
  background: linear-gradient(to right, var(--accent) 0%, var(--accent-glow) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.lw-hero-desc { font-size: 16px; color: var(--steel); max-width: 600px; margin-top: 16px; line-height: 1.5; }

/* ---------- Tabs ---------- */
.lw-mode-tabs {
  display: flex;
  gap: 0;
  border-bottom: 2px solid var(--ink);
  margin-bottom: 36px;
}
.lw-mode-tab {
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 18px 28px;
  background: transparent;
  border: 2px solid transparent;
  border-bottom: none;
  color: var(--muted);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: -2px;
  transition: color 0.2s;
}
.lw-mode-tab:hover { color: var(--ink); }
.lw-mode-tab.active {
  color: var(--paper);
  background: var(--ink);
  border-color: var(--ink);
}
.lw-tab-num { font-size: 10px; opacity: 0.7; }
.lw-mode-tab.active .lw-tab-num { opacity: 1; }

/* ---------- Panels ---------- */
.lw-panel { display: none; padding-bottom: 40px; }
.lw-panel.active { display: block; }

/* ---------- Form grid (vehicle) ---------- */
.lw-form-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 32px;
}
@media (max-width: 900px) { .lw-form-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 540px) { .lw-form-grid { grid-template-columns: 1fr; } }

/* ---------- Spec form ---------- */
.lw-spec-form {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 16px;
  margin-bottom: 32px;
}
@media (max-width: 900px) { .lw-spec-form { grid-template-columns: 1fr 1fr; } }
@media (max-width: 540px) { .lw-spec-form { grid-template-columns: 1fr; } }

/* ---------- Field ---------- */
.lw-field { display: flex; flex-direction: column; gap: 8px; }
.lw-field-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 8px;
}
.lw-field-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  background: var(--ink);
  color: var(--paper);
  border-radius: 50%;
  font-size: 9px;
  font-weight: 700;
}
.lw-input, .lw-root select, .lw-root input[type="text"] {
  width: 100%;
  padding: 16px 18px;
  background: var(--paper);
  border: 2px solid var(--ink);
  font-family: 'Manrope', sans-serif;
  font-size: 15px;
  font-weight: 500;
  color: var(--ink);
  appearance: none;
  -webkit-appearance: none;
  background-repeat: no-repeat;
  background-position: right 14px center;
  background-size: 12px;
  transition: all 0.15s;
}
.lw-root select {
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 8'><path fill='none' stroke='%230a0a0a' stroke-width='2' d='M1 1l5 5 5-5'/></svg>");
  padding-right: 40px;
  cursor: pointer;
}
.lw-root select:hover, .lw-root input:hover { background-color: var(--paper-warm); }
.lw-root select:focus, .lw-root input:focus {
  outline: none;
  background: #fff;
  box-shadow: 4px 4px 0 var(--accent);
  transform: translate(-2px, -2px);
}
.lw-root select:disabled, .lw-root input:disabled {
  background-color: rgba(0,0,0,0.04); color: var(--muted); cursor: not-allowed;
}
.lw-field-hint {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px; color: var(--muted); letter-spacing: 0.04em; min-height: 14px;
}

/* ---------- Actions ---------- */
.lw-actions { display: flex; gap: 16px; align-items: center; margin-bottom: 36px; flex-wrap: wrap; }
.lw-btn {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px; font-weight: 700; letter-spacing: 0.12em;
  text-transform: uppercase; padding: 14px 28px;
  display: inline-flex; align-items: center; gap: 12px;
  cursor: pointer; transition: all 0.15s; border: 2px solid var(--ink);
}
.lw-btn-fill { background: var(--ink); color: var(--paper); }
.lw-btn-fill:hover { background: var(--accent); border-color: var(--accent); }
.lw-btn-ghost { background: transparent; color: var(--ink); }
.lw-btn-ghost:hover { background: var(--paper-warm); }
.lw-btn:hover { transform: translate(-2px, -2px); box-shadow: 4px 4px 0 var(--ink); }
.lw-btn-arrow { display: inline-block; transition: transform 0.2s; }
.lw-btn:hover .lw-btn-arrow { transform: translateX(4px); }
.lw-spinner {
  width: 24px; height: 24px; border: 3px solid #e0e0e0;
  border-top-color: var(--accent); border-radius: 50%;
  animation: lw-spin 0.6s linear infinite;
}
@keyframes lw-spin { to { transform: rotate(360deg); } }

/* ---------- Results ---------- */
.lw-results-header {
  display: flex; align-items: baseline; justify-content: space-between;
  margin-bottom: 24px; padding-bottom: 16px;
  border-bottom: 1px solid var(--line); gap: 24px; flex-wrap: wrap;
}
.lw-results-title {
  font-family: 'Manrope', sans-serif; font-size: 22px; font-weight: 700; letter-spacing: -0.02em;
}
.lw-results-count {
  font-family: 'JetBrains Mono', monospace; font-size: 11px;
  letter-spacing: 0.16em; text-transform: uppercase; color: var(--muted);
}
.lw-results-count b { color: var(--accent); font-weight: 700; font-size: 14px; }

.lw-results-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 20px;
}

/* ---------- Card ---------- */
.lw-card {
  background: var(--paper); border: 2px solid var(--ink);
  padding: 22px 24px; position: relative; transition: all 0.2s; overflow: hidden; cursor: pointer;
}
.lw-card::before {
  content: ""; position: absolute; top: 0; left: 0; width: 100%; height: 6px;
  background: var(--ink); transition: background 0.2s;
}
.lw-card:hover { transform: translate(-3px, -3px); box-shadow: 6px 6px 0 var(--ink); }
.lw-card:hover::before { background: var(--accent); }

.lw-card-pn-row { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 16px; gap: 12px; }
.lw-card-pn { font-family: 'JetBrains Mono', monospace; font-size: 22px; font-weight: 800; letter-spacing: -0.02em; }
.lw-card-sku { font-family: 'JetBrains Mono', monospace; font-size: 10px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--muted); padding: 4px 8px; border: 1px solid var(--line); white-space: nowrap; }
.lw-card-size { font-family: 'Manrope', sans-serif; font-size: 32px; font-weight: 800; letter-spacing: -0.04em; line-height: 1; margin-bottom: 4px; }
.lw-card-size-sub { font-family: 'JetBrains Mono', monospace; font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted); margin-bottom: 18px; }

.lw-card-specs {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 4px 16px; padding: 14px 0;
  border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); margin-bottom: 14px;
}
.lw-spec-row { display: flex; justify-content: space-between; font-family: 'JetBrains Mono', monospace; font-size: 11px; }
.lw-spec-row .lw-sp { color: var(--muted); letter-spacing: 0.1em; text-transform: uppercase; }
.lw-spec-row .lw-sv { font-weight: 700; color: var(--ink); }

.lw-card-fit { font-size: 12px; color: var(--steel); line-height: 1.45; font-style: italic; }
.lw-card-fit b { font-style: normal; color: var(--ink); }

/* ---------- Match badge ---------- */
.lw-match-badge {
  position: absolute; top: 22px; right: 22px;
  font-family: 'JetBrains Mono', monospace; font-size: 9px; font-weight: 700;
  letter-spacing: 0.14em; text-transform: uppercase; padding: 4px 8px;
  background: var(--ok); color: white;
}
.lw-match-badge.lw-partial { background: var(--warn); }

/* ---------- Empty ---------- */
.lw-empty {
  text-align: center; padding: 80px 24px;
  border: 2px dashed var(--line-strong); background: rgba(255,255,255,0.4);
}
.lw-empty-mark { font-family: 'JetBrains Mono', monospace; font-size: 48px; font-weight: 800; color: var(--accent); margin-bottom: 12px; }
.lw-empty h3 { font-family: 'Manrope', sans-serif; font-size: 22px; font-weight: 700; letter-spacing: -0.02em; margin-bottom: 8px; color: var(--ink); }
.lw-empty p { color: var(--muted); max-width: 380px; margin: 0 auto; font-size: 14px; }

/* ---------- Modal ---------- */
.lw-modal-backdrop {
  position: fixed; inset: 0; background: rgba(10,10,10,0.75); z-index: 1000;
  display: none; align-items: flex-start; justify-content: center;
  padding: 40px 20px; overflow-y: auto; backdrop-filter: blur(4px);
}
.lw-modal-backdrop.open { display: flex; }
.lw-modal {
  background: var(--paper); border: 2px solid var(--ink);
  max-width: 720px; width: 100%; position: relative; box-shadow: 8px 8px 0 var(--accent);
}
.lw-modal-head {
  padding: 28px 32px; border-bottom: 2px solid var(--ink);
  display: flex; justify-content: space-between; align-items: flex-start; gap: 16px;
}
.lw-modal-pn { font-family: 'JetBrains Mono', monospace; font-size: 36px; font-weight: 800; letter-spacing: -0.03em; }
.lw-modal-close {
  background: transparent; border: 2px solid var(--ink); width: 36px; height: 36px;
  cursor: pointer; font-family: 'JetBrains Mono', monospace; font-size: 16px; font-weight: 700;
  display: flex; align-items: center; justify-content: center; transition: all 0.15s;
}
.lw-modal-close:hover { background: var(--accent); color: white; border-color: var(--accent); }
.lw-modal-body { padding: 28px 32px; }
.lw-modal-section { margin-bottom: 24px; }
.lw-modal-section-title {
  font-family: 'JetBrains Mono', monospace; font-size: 10px; letter-spacing: 0.2em;
  text-transform: uppercase; color: var(--muted); font-weight: 600;
  margin-bottom: 12px; padding-bottom: 6px; border-bottom: 1px solid var(--line);
}
.lw-modal-spec-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px;
}
@media (max-width: 540px) { .lw-modal-spec-grid { grid-template-columns: repeat(2, 1fr); } }
.lw-modal-spec-cell {
  background: var(--paper-warm); padding: 12px 14px; border: 1px solid var(--line);
}
.lw-modal-spec-cell .lbl {
  font-family: 'JetBrains Mono', monospace; font-size: 9px; letter-spacing: 0.16em;
  text-transform: uppercase; color: var(--muted); margin-bottom: 4px;
}
.lw-modal-spec-cell .val {
  font-family: 'JetBrains Mono', monospace; font-size: 18px; font-weight: 700; color: var(--ink);
}

.lw-fit-list {
  max-height: 320px; overflow-y: auto; border: 1px solid var(--line); background: var(--paper);
}
.lw-fit-list::-webkit-scrollbar { width: 8px; }
.lw-fit-list::-webkit-scrollbar-track { background: var(--paper-warm); }
.lw-fit-list::-webkit-scrollbar-thumb { background: var(--ink); }
.lw-fit-row {
  display: grid; grid-template-columns: 80px 120px 1fr 1fr;
  gap: 12px; padding: 10px 14px; border-bottom: 1px solid var(--line);
  font-size: 13px; align-items: center;
}
.lw-fit-row:last-child { border-bottom: none; }
.lw-fit-row .yr { font-family: 'JetBrains Mono', monospace; font-weight: 700; }
.lw-fit-row .mk { font-family: 'JetBrains Mono', monospace; font-size: 11px; letter-spacing: 0.06em; text-transform: uppercase; color: var(--muted); }
.lw-fit-row .md { font-weight: 600; }
.lw-fit-row .sm { color: var(--muted); font-size: 12px; }

/* ---------- Animation ---------- */
@keyframes lw-slideUp { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: translateY(0); } }
.lw-card { animation: lw-slideUp 0.3s ease backwards; }
.lw-card:nth-child(1) { animation-delay: 0.02s; }
.lw-card:nth-child(2) { animation-delay: 0.05s; }
.lw-card:nth-child(3) { animation-delay: 0.08s; }
.lw-card:nth-child(4) { animation-delay: 0.11s; }
.lw-card:nth-child(5) { animation-delay: 0.14s; }
.lw-card:nth-child(6) { animation-delay: 0.17s; }
.lw-card:nth-child(n+7) { animation-delay: 0.2s; }