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

:root {
  --bg:       #0E0E10;
  --surface:  #16161A;
  --border:   #2A2A30;
  --text:     #E2DDD8;
  --muted:    #6B6878;
  --accent:   #FF5C35;
  --teal:     #3FFFC2;
  --yellow:   #FFD166;
  --neg:      #FF4D6D;
  --font-head: 'Syne', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  --font-body: 'Outfit', sans-serif;
}

html { font-size: 16px; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  min-height: 100vh;
  overflow-x: hidden;
}

/* ─── NOISE OVERLAY ─── */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.04'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 999;
  opacity: 0.3;
}

/* ─── LAYOUT ─── */
.app {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px 80px;
}

/* ─── HEADER ─── */
header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  padding: 48px 0 40px;
  border-bottom: 1px solid var(--border);
  gap: 16px;
  flex-wrap: wrap;
}

.logo-block { display: flex; flex-direction: column; gap: 6px; }

.logo-tag {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
}

h1 {
  font-family: var(--font-head);
  font-size: clamp(2rem, 5vw, 3.6rem);
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.02em;
}

h1 span { color: var(--accent); }

.formula-badge {
  font-family: var(--font-mono);
  font-size: 12px;
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 12px 20px;
  color: var(--muted);
  border-radius: 4px;
}

.formula-fraction {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
}

.formula-numerator,
.formula-denominator {
  padding: 4px 0;
  white-space: nowrap;
}

.formula-divider {
  width: 100%;
  height: 1px;
  background: var(--border);
  margin: 2px 0;
}

.formula-badge strong { font-weight: 600; }

/* ─── FORM ─── */
.form-section {
  display: grid;
  grid-template-columns: 1fr 1fr 260px;
  gap: 32px;
  padding: 40px 0;
  border-bottom: 1px solid var(--border);
}

@media (max-width: 900px) {
  .form-section { grid-template-columns: 1fr 1fr; }
  .form-col-preview { grid-column: 1 / -1; }
}

@media (max-width: 580px) {
  .form-section { grid-template-columns: 1fr; }
  .form-col-preview { grid-column: auto; }
}

.form-col { display: flex; flex-direction: column; gap: 20px; }

.form-group-label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
  padding-bottom: 4px;
  border-bottom: 1px solid var(--border);
}

label {
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--muted);
}

input[type="text"] {
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 15px;
  padding: 12px 16px;
  border-radius: 4px;
  outline: none;
  transition: border-color 0.2s;
  width: 100%;
}

input[type="text"]:focus { border-color: var(--accent); }
input[type="text"]::placeholder { color: var(--muted); opacity: 0.5; }

/* ─── SLIDERS ─── */
.slider-group { display: flex; flex-direction: column; gap: 10px; }

.slider-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.slider-val {
  font-family: var(--font-mono);
  font-size: 24px;
  font-weight: 600;
  color: var(--text);
  min-width: 32px;
  text-align: right;
}

.pain-color  { color: var(--accent); }
.freq-color  { color: var(--yellow); }
.denom-color { color: var(--teal); }

input[type="range"] {
  -webkit-appearance: none;
  width: 100%;
  height: 4px;
  background: var(--border);
  border-radius: 2px;
  outline: none;
  cursor: pointer;
}

input[type="range"].pain-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 18px; height: 18px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
  box-shadow: 0 0 10px rgba(255,92,53,0.5);
  transition: box-shadow 0.2s;
}
input[type="range"].pain-slider::-webkit-slider-thumb:hover {
  box-shadow: 0 0 18px rgba(255,92,53,0.8);
}

input[type="range"].freq-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 18px; height: 18px;
  border-radius: 50%;
  background: var(--yellow);
  cursor: pointer;
  box-shadow: 0 0 10px rgba(255,209,102,0.5);
  transition: box-shadow 0.2s;
}
input[type="range"].freq-slider::-webkit-slider-thumb:hover {
  box-shadow: 0 0 18px rgba(255,209,102,0.8);
}

input[type="range"].denom-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 18px; height: 18px;
  border-radius: 50%;
  background: var(--teal);
  cursor: pointer;
  box-shadow: 0 0 10px rgba(63,255,194,0.4);
  transition: box-shadow 0.2s;
}
input[type="range"].denom-slider::-webkit-slider-thumb:hover {
  box-shadow: 0 0 18px rgba(63,255,194,0.7);
}

.slider-ticks {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--muted);
  padding: 0 2px;
}

/* ─── PREVIEW SCORE ─── */
.score-preview {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  flex: 1;
}

.score-preview-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--muted);
}

.score-preview-num {
  font-family: var(--font-head);
  font-size: 56px;
  font-weight: 800;
  line-height: 1;
  transition: color 0.3s, text-shadow 0.3s;
}

.score-preview-sub {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--muted);
  text-align: center;
}

/* ─── SUBMIT BUTTON ─── */
.btn-add {
  background: var(--accent);
  color: #fff;
  border: none;
  padding: 14px 28px;
  font-family: var(--font-head);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  cursor: pointer;
  border-radius: 4px;
  transition: background 0.2s, transform 0.1s, box-shadow 0.2s;
  align-self: flex-end;
  width: 100%;
}

.btn-add:hover {
  background: #ff7555;
  box-shadow: 0 4px 24px rgba(255,92,53,0.4);
}

.btn-add:active { transform: scale(0.98); }

/* ─── RESULTS ─── */
.results-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 36px 0 20px;
  gap: 16px;
  flex-wrap: wrap;
}

.results-title {
  font-family: var(--font-head);
  font-size: 1.1rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted);
}

.results-count {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--muted);
}

.btn-clear {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 6px 14px;
  cursor: pointer;
  border-radius: 4px;
  transition: border-color 0.2s, color 0.2s;
}

.btn-clear:hover { border-color: var(--neg); color: var(--neg); }

.btn-export {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--teal);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 6px 14px;
  cursor: pointer;
  border-radius: 4px;
  transition: border-color 0.2s, background 0.2s;
}

.btn-export:hover { border-color: var(--teal); background: rgba(63,255,194,0.06); }

/* ─── OPPORTUNITY CARDS ─── */
.opportunities { display: flex; flex-direction: column; gap: 12px; }

.opp-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 18px 22px;
  display: grid;
  grid-template-columns: 1fr auto auto;
  gap: 12px 16px;
  align-items: center;
  animation: slideIn 0.35s cubic-bezier(0.22, 1, 0.36, 1) both;
  position: relative;
  overflow: hidden;
}

.opp-card::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 3px;
  background: var(--score-color, var(--teal));
  border-radius: 3px 0 0 3px;
}

@keyframes slideIn {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

.opp-main { display: flex; flex-direction: column; gap: 10px; min-width: 0; }

.opp-name {
  font-size: 16px;
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.opp-meta {
  display: flex;
  gap: 16px;
  align-items: center;
  flex-wrap: wrap;
}

.meta-item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--muted);
}

.meta-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

.meta-dot.pain  { background: var(--accent); }
.meta-dot.freq  { background: var(--yellow); }
.meta-dot.denom { background: var(--teal); }

.meta-sep {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--border);
  user-select: none;
}

/* ─── SCORE BAR ─── */
.score-bar-wrap {
  display: flex;
  flex-direction: column;
  gap: 3px;
  margin-top: 4px;
}

.score-bar-track {
  height: 4px;
  background: var(--border);
  border-radius: 2px;
  overflow: hidden;
}

.score-bar-fill {
  height: 100%;
  border-radius: 2px;
  background: var(--score-color, var(--teal));
  width: 0;
  transition: width 0.6s cubic-bezier(0.22, 1, 0.36, 1);
}

/* ─── SCORE BADGE ─── */
.score-badge {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  min-width: 80px;
}

.score-num {
  font-family: var(--font-head);
  font-size: 36px;
  font-weight: 800;
  line-height: 1;
  color: var(--score-color, var(--teal));
}

.score-label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}

.rank-badge {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--muted);
}

/* ─── DELETE BTN ─── */
.btn-del {
  background: transparent;
  border: none;
  color: var(--muted);
  cursor: pointer;
  font-size: 18px;
  padding: 4px 6px;
  line-height: 1;
  border-radius: 4px;
  transition: color 0.2s, background 0.2s;
}

.btn-del:hover { color: var(--neg); background: rgba(255,77,109,0.1); }

.opp-actions {
  display: flex;
  flex-direction: column;
  gap: 4px;
  align-items: center;
}

.btn-edit {
  background: transparent;
  border: none;
  color: var(--muted);
  cursor: pointer;
  font-size: 15px;
  padding: 4px 6px;
  line-height: 1;
  border-radius: 4px;
  transition: color 0.2s, background 0.2s;
}

.btn-edit:hover { color: var(--teal); background: rgba(63,255,194,0.1); }

.btn-cancel {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 10px;
  cursor: pointer;
  border-radius: 4px;
  transition: border-color 0.2s, color 0.2s;
  width: 100%;
}

.btn-cancel:hover { border-color: var(--muted); color: var(--text); }

.opp-card.is-editing {
  border-color: var(--teal);
  box-shadow: 0 0 0 1px var(--teal);
}

/* ─── EMPTY STATE ─── */
.empty {
  padding: 64px 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  color: var(--muted);
}

.empty-icon {
  font-size: 40px;
  opacity: 0.3;
}

.empty-text {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  opacity: 0.5;
}

/* ─── LEGEND ─── */
.legend {
  display: flex;
  gap: 24px;
  padding-top: 8px;
  flex-wrap: wrap;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--muted);
}

.legend-swatch {
  width: 12px; height: 12px;
  border-radius: 2px;
}

/* ─── STAT STRIP ─── */
.stat-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  padding: 24px 0;
  border-top: 1px solid var(--border);
  margin-top: 24px;
}

.stat-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 14px 18px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.stat-label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--muted);
}

.stat-val {
  font-family: var(--font-head);
  font-size: 28px;
  font-weight: 800;
  line-height: 1;
}

/* ─── FOOTER ─── */
.site-footer {
  border-top: 1px solid var(--border);
  margin-top: 40px;
  padding: 24px 0;
  text-align: center;
}

.site-footer-link {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--muted);
  text-decoration: none;
  transition: color 0.2s;
}

.site-footer-link:hover { color: var(--teal); }