/* ─────────────────────────────────────────────────────────────────────────────
   CodeWrench — Industrial mechanical aesthetic
   Fonts: Syne (display), DM Sans (body), JetBrains Mono (code)
───────────────────────────────────────────────────────────────────────────── */
@import url('https://fonts.googleapis.com/css2?family=Syne:wght@400;600;700;800&family=DM+Sans:ital,opsz,wght@0,9..40,300;0,9..40,400;0,9..40,500;1,9..40,400&family=JetBrains+Mono:wght@400;500&display=swap');

/* ── VARIABLES ──────────────────────────────────────────────────────────────── */
:root {
  --bg:        #0c0c0e;
  --surface:   #141418;
  --surface2:  #1c1c22;
  --border:    rgba(255,255,255,0.07);
  --border-hi: rgba(255,255,255,0.14);
  --text:      #f0ede8;
  --text-dim:  #8a8784;
  --text-mute: #55524e;
  --amber:     #f0a500;
  --amber-dim: rgba(240,165,0,0.12);
  --amber-glow: rgba(240,165,0,0.25);
  --green:     #4ade80;
  --orange:    #fb923c;
  --red:       #f87171;
  --font-display: 'Syne', sans-serif;
  --font-body:    'DM Sans', sans-serif;
  --font-code:    'JetBrains Mono', monospace;
  --radius:    6px;
  --radius-lg: 12px;
  --shadow:    0 4px 24px rgba(0,0,0,0.5);
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  font-size: 16px;
  line-height: 1.6;
  min-height: 100vh;
}

/* ── TYPOGRAPHY ─────────────────────────────────────────────────────────────── */
h1, h2, h3 { font-family: var(--font-display); font-weight: 700; line-height: 1.1; }
h1 { font-size: clamp(2.4rem, 6vw, 4.2rem); font-weight: 800; }
h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); }
h3 { font-size: 1.1rem; font-weight: 600; }
p  { max-width: 60ch; }
a  { color: var(--amber); text-decoration: none; }
a:hover { text-decoration: underline; }

code {
  font-family: var(--font-code);
  font-size: 0.85em;
  background: var(--surface2);
  border: 1px solid var(--border);
  padding: 1px 6px;
  border-radius: 4px;
}

/* ── LAYOUT ─────────────────────────────────────────────────────────────────── */
.container {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ── NAV ────────────────────────────────────────────────────────────────────── */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 16px 24px;
  background: rgba(12,12,14,0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.1rem;
  letter-spacing: -0.02em;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 8px;
}
.nav-logo svg { color: var(--amber); }
.nav-badge {
  font-size: 0.65rem;
  font-family: var(--font-code);
  background: var(--amber-dim);
  color: var(--amber);
  padding: 2px 8px;
  border-radius: 20px;
  letter-spacing: 0.05em;
}

/* ── HERO ────────────────────────────────────────────────────────────────────── */
.hero {
  padding: 140px 0 80px;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    repeating-linear-gradient(
      0deg, transparent, transparent 39px,
      var(--border) 39px, var(--border) 40px
    ),
    repeating-linear-gradient(
      90deg, transparent, transparent 39px,
      var(--border) 39px, var(--border) 40px
    );
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, black 30%, transparent 80%);
  pointer-events: none;
}
.hero::after {
  content: '';
  position: absolute;
  top: -200px; left: 50%; transform: translateX(-50%);
  width: 800px; height: 400px;
  background: radial-gradient(ellipse, var(--amber-glow) 0%, transparent 70%);
  pointer-events: none;
}
.hero-content { position: relative; z-index: 1; }

.hero-eyebrow {
  font-family: var(--font-code);
  font-size: 0.75rem;
  color: var(--amber);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.hero h1 {
  margin-bottom: 20px;
  letter-spacing: -0.03em;
}
.hero h1 span {
  color: var(--amber);
}

.hero-sub {
  font-size: 1.15rem;
  color: var(--text-dim);
  margin-bottom: 48px;
  max-width: 52ch;
  font-weight: 300;
}

/* ── SEARCH BOX ─────────────────────────────────────────────────────────────── */
.search-box {
  max-width: 540px;
  margin-bottom: 32px;
}
.search-label {
  font-family: var(--font-code);
  font-size: 0.7rem;
  color: var(--text-mute);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 10px;
  display: block;
}
.search-input-row {
  display: flex;
  gap: 0;
  background: var(--surface);
  border: 1.5px solid var(--border-hi);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.search-input-row:focus-within {
  border-color: var(--amber);
  box-shadow: 0 0 0 3px var(--amber-dim);
}
.search-input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  padding: 18px 22px;
  font-family: var(--font-code);
  font-size: 1.3rem;
  font-weight: 500;
  color: var(--text);
  letter-spacing: 0.05em;
}
.search-input::placeholder { color: var(--text-mute); font-weight: 400; }
.search-btn {
  background: var(--amber);
  color: #0c0c0e;
  border: none;
  padding: 0 28px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.9rem;
  cursor: pointer;
  letter-spacing: 0.03em;
  transition: background 0.2s, transform 0.1s;
  white-space: nowrap;
}
.search-btn:hover { background: #ffb520; }
.search-btn:active { transform: scale(0.98); }

.search-hint {
  margin-top: 10px;
  font-size: 0.78rem;
  color: var(--text-mute);
  font-family: var(--font-code);
}
.search-hint span {
  color: var(--text-dim);
  background: var(--surface2);
  border: 1px solid var(--border);
  padding: 1px 6px;
  border-radius: 3px;
  margin: 0 2px;
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s;
}
.search-hint span:hover { color: var(--amber); border-color: var(--amber); }

/* ── RESULT CARD ────────────────────────────────────────────────────────────── */
.result-card {
  background: var(--surface);
  border: 1px solid var(--border-hi);
  border-radius: var(--radius-lg);
  padding: 32px;
  max-width: 700px;
  animation: slideUp 0.3s ease;
  margin-bottom: 48px;
}
@keyframes slideUp {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

.result-header { display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; margin-bottom: 20px; }
.result-code-block { display: flex; align-items: center; gap: 12px; }
.result-code {
  font-family: var(--font-code);
  font-size: 1.6rem;
  font-weight: 500;
  color: var(--amber);
  letter-spacing: 0.04em;
}
.result-system {
  font-family: var(--font-code);
  font-size: 0.72rem;
  color: var(--text-mute);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  background: var(--surface2);
  padding: 3px 10px;
  border-radius: 20px;
  border: 1px solid var(--border);
}

.severity-badge {
  font-family: var(--font-code);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  padding: 4px 12px;
  border-radius: 20px;
  white-space: nowrap;
  flex-shrink: 0;
}
.severity-high   { background: rgba(248,113,113,0.15); color: var(--red); border: 1px solid rgba(248,113,113,0.25); }
.severity-medium { background: rgba(251,146,60,0.15); color: var(--orange); border: 1px solid rgba(251,146,60,0.25); }
.severity-low    { background: rgba(74,222,128,0.12);  color: var(--green);  border: 1px solid rgba(74,222,128,0.2); }

.result-name {
  font-size: 1.05rem;
  font-weight: 500;
  color: var(--text);
  margin-bottom: 16px;
  line-height: 1.4;
}

.result-section {
  margin-top: 20px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
}
.result-section:first-of-type { border-top: none; margin-top: 0; padding-top: 0; }

.section-label {
  font-family: var(--font-code);
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-mute);
  margin-bottom: 8px;
}

.diagnosis-text {
  font-size: 0.95rem;
  color: var(--text-dim);
  line-height: 1.7;
}

.cost-range {
  display: flex;
  align-items: center;
  gap: 12px;
}
.cost-value {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  color: var(--text);
}
.cost-tilde { font-size: 1.5rem; color: var(--text-mute); }
.cost-note { font-size: 0.82rem; color: var(--text-mute); margin-top: 4px; }

.temp-fix-text {
  background: var(--amber-dim);
  border: 1px solid rgba(240,165,0,0.2);
  border-radius: var(--radius);
  padding: 16px;
  font-size: 0.9rem;
  color: var(--text-dim);
  line-height: 1.65;
}

/* ── ERROR STATE ────────────────────────────────────────────────────────────── */
.error-card {
  background: var(--surface);
  border: 1px solid rgba(248,113,113,0.2);
  border-radius: var(--radius-lg);
  padding: 28px 32px;
  max-width: 540px;
  animation: slideUp 0.25s ease;
  margin-bottom: 48px;
}
.error-title {
  font-family: var(--font-display);
  font-size: 1rem;
  color: var(--red);
  margin-bottom: 6px;
}
.error-sub { font-size: 0.85rem; color: var(--text-dim); }

/* ── FEATURES SECTION ───────────────────────────────────────────────────────── */
.features {
  padding: 60px 0 80px;
  border-top: 1px solid var(--border);
}
.features h2 { margin-bottom: 40px; }
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
}
.feature-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  transition: border-color 0.2s, transform 0.2s;
}
.feature-card:hover {
  border-color: var(--border-hi);
  transform: translateY(-2px);
}
.feature-icon {
  width: 40px; height: 40px;
  background: var(--amber-dim);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 14px;
  color: var(--amber);
}
.feature-card h3 { margin-bottom: 8px; }
.feature-card p { font-size: 0.85rem; color: var(--text-dim); }

/* ── FOOTER ─────────────────────────────────────────────────────────────────── */
.footer {
  padding: 32px 0;
  border-top: 1px solid var(--border);
  color: var(--text-mute);
  font-size: 0.8rem;
  font-family: var(--font-code);
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

/* ── ANIMATIONS ─────────────────────────────────────────────────────────────── */
@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

/* ── RESPONSIVE ─────────────────────────────────────────────────────────────── */
@media (max-width: 640px) {
  .hero { padding: 120px 0 60px; }
  .hero h1 { font-size: 2.2rem; }
  .result-card { padding: 22px; }
  .search-input { font-size: 1.1rem; padding: 16px 18px; }
  .search-btn { padding: 0 20px; }
  .result-header { flex-wrap: wrap; }
  .cost-value { font-size: 1.6rem; }
  .nav-badge { display: none; }
}

/* ── SCROLLBAR ──────────────────────────────────────────────────────────────── */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--surface2); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-mute); }

/* ── SELECTION ──────────────────────────────────────────────────────────────── */
::selection { background: var(--amber-dim); color: var(--amber); }

/* ── FOCUS ──────────────────────────────────────────────────────────────────── */
:focus-visible { outline: 2px solid var(--amber); outline-offset: 3px; }

/* ── SKELETON LOADING ───────────────────────────────────────────────────────── */
.loading-skeleton {
  background: linear-gradient(90deg, var(--surface) 0%, var(--surface2) 50%, var(--surface) 100%);
  background-size: 200% 100%;
  animation: shimmer 1.4s infinite;
  border-radius: var(--radius);
}
@keyframes shimmer {
  0%   { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* ── NOT FOUND PROMPT ───────────────────────────────────────────────────────── */
.empty-prompt {
  background: var(--surface);
  border: 1px dashed var(--border-hi);
  border-radius: var(--radius-lg);
  padding: 32px;
  max-width: 540px;
  text-align: center;
}
.empty-prompt-icon {
  font-size: 2rem;
  margin-bottom: 12px;
  opacity: 0.4;
}
.empty-prompt h3 { margin-bottom: 8px; color: var(--text-dim); }
.empty-prompt p  { font-size: 0.85rem; color: var(--text-mute); }

/* ── DISCLAIMER ─────────────────────────────────────────────────────────────── */
.disclaimer {
  font-size: 0.75rem;
  color: var(--text-mute);
  border-top: 1px solid var(--border);
  padding-top: 24px;
  margin-top: 8px;
  max-width: none;
}