/* ═══════════════════════════════════════════════════════════
   Cocktail MOBO — Global Styles
   Dark cocktail theme: amber, lime-green, electric-blue
═══════════════════════════════════════════════════════════ */

/* ── Custom properties ─────────────────────────────────── */
:root {
  --bg:          #0f0f1a;
  --bg2:         #16162a;
  --card:        #1c1c32;
  --card-border: #2a2a4a;
  --accent:      #f0a500;       /* amber */
  --accent2:     #7fff6a;       /* lime-green */
  --accent3:     #38bdf8;       /* electric-blue */
  --danger:      #f87171;
  --text:        #e2e8f0;
  --muted:       #8892a4;
  --sobol-color: #38bdf8;
  --bo-color:    #a78bfa;
  --pareto-gold: #fbbf24;
  --radius:      12px;
  --radius-sm:   8px;
  --transition:  0.2s ease;
  --shadow:      0 4px 24px rgba(0,0,0,0.5);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100dvh;
  line-height: 1.6;
}

/* ── Header ─────────────────────────────────────────────── */
#app-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(15,15,26,0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--card-border);
}
.header-inner {
  max-width: 720px;
  margin: 0 auto;
  padding: 12px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.logo { font-size: 1.1rem; font-weight: 700; letter-spacing: -0.02em; }

/* ── Main container ─────────────────────────────────────── */
#app {
  max-width: 720px;
  margin: 0 auto;
  padding: 24px 16px 80px;
}

/* ── Steps ──────────────────────────────────────────────── */
.step { display: none; }
.step.active { display: block; }

/* ── Hero ───────────────────────────────────────────────── */
.hero { text-align: center; padding: 40px 16px 32px; }
.hero-icon { font-size: 4rem; margin-bottom: 12px; }
.hero h1 {
  font-size: clamp(1.8rem, 5vw, 2.8rem);
  font-weight: 700;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.03em;
}
.hero-sub {
  margin-top: 10px;
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.7;
}

/* ── Cards ──────────────────────────────────────────────── */
.card {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 16px;
  box-shadow: var(--shadow);
}
.card h2 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--text);
}
.card-hint {
  font-size: 0.82rem;
  color: var(--muted);
  margin-bottom: 14px;
}
.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 6px;
}

/* ── Buttons ────────────────────────────────────────────── */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 22px;
  background: var(--accent);
  color: #000;
  font-weight: 600;
  font-size: 0.9rem;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: opacity var(--transition), transform var(--transition);
  text-decoration: none;
}
.btn-primary:hover:not(:disabled) { opacity: 0.88; transform: translateY(-1px); }
.btn-primary:disabled { opacity: 0.4; cursor: not-allowed; }

.btn-large { width: 100%; padding: 14px 22px; font-size: 1rem; margin-top: 8px; }

.btn-accent {
  padding: 10px 18px;
  background: transparent;
  border: 1.5px solid var(--accent);
  color: var(--accent);
  font-weight: 600;
  font-size: 0.88rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  white-space: nowrap;
  transition: background var(--transition), color var(--transition);
}
.btn-accent:hover { background: var(--accent); color: #000; }

.btn-ghost {
  padding: 6px 14px;
  background: transparent;
  border: 1px solid var(--card-border);
  color: var(--muted);
  font-size: 0.82rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: border-color var(--transition), color var(--transition);
}
.btn-ghost:hover { border-color: var(--danger); color: var(--danger); }

.btn-remove {
  background: transparent;
  border: none;
  color: var(--muted);
  cursor: pointer;
  font-size: 0.9rem;
  padding: 2px 6px;
  border-radius: 4px;
  transition: color var(--transition);
}
.btn-remove:hover { color: var(--danger); }

/* ── Input ──────────────────────────────────────────────── */
input[type="text"] {
  width: 100%;
  background: var(--bg2);
  border: 1.5px solid var(--card-border);
  color: var(--text);
  font-size: 0.92rem;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  outline: none;
  transition: border-color var(--transition);
  font-family: inherit;
}
input[type="text"]:focus { border-color: var(--accent); }
input[type="text"]::placeholder { color: var(--muted); }

.input-row {
  display: flex;
  gap: 10px;
  margin-top: 10px;
}
.input-row input { flex: 1; }

/* ── Tags ───────────────────────────────────────────────── */
.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 4px;
  min-height: 28px;
}
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--bg2);
  border: 1px solid var(--card-border);
  color: var(--text);
  font-size: 0.82rem;
  padding: 4px 10px 4px 12px;
  border-radius: 999px;
}

/* ── Number input ───────────────────────────────────────── */
input[type="number"] {
  width: 72px;
  background: var(--bg2);
  border: 1.5px solid var(--card-border);
  color: var(--text);
  font-size: 0.92rem;
  padding: 8px 10px;
  border-radius: var(--radius-sm);
  outline: none;
  transition: border-color var(--transition);
  font-family: inherit;
  text-align: center;
  -moz-appearance: textfield;
}
input[type="number"]:focus { border-color: var(--accent); }
input[type="number"]::-webkit-inner-spin-button,
input[type="number"]::-webkit-outer-spin-button { opacity: 1; }

/* ── Rounds inputs ──────────────────────────────────────── */
.rounds-inputs {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 10px;
}
.rounds-row {
  display: flex;
  align-items: center;
  gap: 12px;
}
.rounds-row label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.88rem;
  font-weight: 500;
  min-width: 160px;
  flex-shrink: 0;
  cursor: default;
}
.rounds-total {
  font-size: 0.82rem;
  color: var(--muted);
  text-align: right;
  padding-top: 8px;
  border-top: 1px solid var(--card-border);
}

/* ── Objective inputs ───────────────────────────────────── */
.objective-inputs { display: flex; flex-direction: column; gap: 10px; }
.objective-inputs label { display: flex; align-items: center; gap: 10px; }
.obj-row { display: flex; align-items: center; gap: 10px; }
.obj-num {
  font-size: 1.2rem;
  min-width: 28px;
  text-align: center;
  flex-shrink: 0;
}

/* ── Direction toggle (Min / Max) ───────────────────────── */
.dir-toggle {
  display: flex;
  flex-shrink: 0;
  border: 1px solid var(--card-border);
  border-radius: var(--radius-sm);
  overflow: hidden;
}
.dir-btn {
  background: transparent;
  border: none;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 500;
  padding: 5px 10px;
  cursor: pointer;
  transition: background var(--transition), color var(--transition);
  white-space: nowrap;
}
.dir-btn:first-child { border-right: 1px solid var(--card-border); }
.dir-btn:hover { background: rgba(255,255,255,0.06); color: var(--text); }
.dir-btn.active {
  background: var(--accent);
  color: #000;
  font-weight: 600;
}

/* ── Progress bar ───────────────────────────────────────── */
.progress-section {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 16px 20px;
  margin-bottom: 16px;
}
.progress-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 10px;
  font-size: 0.88rem;
  font-weight: 500;
}
.progress-track {
  position: relative;
  height: 8px;
  background: var(--bg2);
  border-radius: 999px;
  overflow: visible;
}
.progress-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--sobol-color), var(--bo-color));
  border-radius: 999px;
  transition: width 0.4s ease;
}
.progress-marker {
  position: absolute;
  top: -3px;
  width: 2px;
  height: 14px;
  background: var(--muted);
  border-radius: 1px;
  /* left set by JS: (n_sobol / total) * 100% */
}
.progress-legend {
  display: flex;
  gap: 16px;
  margin-top: 8px;
  font-size: 0.78rem;
  color: var(--muted);
}
.dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  margin-right: 4px;
}
.dot.sobol { background: var(--sobol-color); }
.dot.bo { background: var(--bo-color); }

/* ── Phase badge ────────────────────────────────────────── */
.phase-badge {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 999px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.phase-badge.sobol { background: rgba(56,189,248,0.15); color: var(--sobol-color); border: 1px solid rgba(56,189,248,0.3); }
.phase-badge.bo    { background: rgba(167,139,250,0.15); color: var(--bo-color);    border: 1px solid rgba(167,139,250,0.3); }

.iter-tag {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--muted);
  background: var(--bg2);
  padding: 3px 10px;
  border-radius: 999px;
}

.pareto-count-badge {
  font-size: 0.78rem;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 999px;
  background: rgba(251,191,36,0.15);
  color: var(--pareto-gold);
  border: 1px solid rgba(251,191,36,0.3);
}

/* ── Ingredient amount bars ─────────────────────────────── */
.amounts-grid {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 10px;
}
.amount-row {
  display: grid;
  grid-template-columns: 130px 1fr 55px;
  align-items: center;
  gap: 10px;
}
@media (max-width: 480px) {
  .amount-row { grid-template-columns: 100px 1fr 50px; }
}
.amount-label {
  font-size: 0.85rem;
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.amount-bar-wrap {
  background: var(--bg2);
  border-radius: 999px;
  height: 8px;
  overflow: hidden;
}
.amount-bar {
  height: 100%;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  transition: width 0.5s ease;
}
.amount-value {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent);
  text-align: right;
  white-space: nowrap;
}
.amount-total {
  margin-top: 6px;
  padding-top: 6px;
  border-top: 1px solid var(--card-border);
  font-size: 0.8rem;
  color: var(--muted);
  text-align: right;
}

/* ── Likert rating ──────────────────────────────────────── */
.rating-inputs { display: flex; flex-direction: column; gap: 16px; margin-bottom: 16px; }

.rating-block { display: flex; flex-direction: column; gap: 6px; }
.rating-block .obj-label {
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 8px;
}
.rating-block .obj-label .selected-val {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--accent);
  min-width: 24px;
}
.likert {
  display: flex;
  gap: 4px;
}
.likert-btn {
  flex: 1;
  aspect-ratio: 1;
  min-width: 0;
  background: var(--bg2);
  border: 1.5px solid var(--card-border);
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 600;
  border-radius: 6px;
  cursor: pointer;
  transition: background var(--transition), color var(--transition), border-color var(--transition), transform 0.1s;
}
.likert-btn:hover { border-color: var(--accent); color: var(--text); }
.likert-btn.selected {
  background: var(--accent);
  color: #000;
  border-color: var(--accent);
  transform: scale(1.1);
}
@media (max-width: 400px) {
  .likert-btn { font-size: 0.7rem; }
}

/* ── History table ──────────────────────────────────────── */
.table-wrap {
  overflow-x: auto;
  border-radius: var(--radius-sm);
  border: 1px solid var(--card-border);
  margin-top: 8px;
}
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.8rem;
  white-space: nowrap;
}
thead { background: var(--bg2); }
th {
  padding: 10px 12px;
  text-align: left;
  font-weight: 600;
  color: var(--muted);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 1px solid var(--card-border);
}
td {
  padding: 9px 12px;
  border-bottom: 1px solid var(--card-border);
  color: var(--text);
}
tr:last-child td { border-bottom: none; }
tr.is-pareto td { background: rgba(251,191,36,0.06); }
tr.is-pareto td:first-child { border-left: 3px solid var(--pareto-gold); }
.pareto-star { color: var(--pareto-gold); margin-right: 4px; }
.phase-chip {
  display: inline-block;
  font-size: 0.68rem;
  font-weight: 700;
  padding: 2px 7px;
  border-radius: 999px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.phase-chip.sobol { background: rgba(56,189,248,0.15);  color: var(--sobol-color); }
.phase-chip.bo    { background: rgba(167,139,250,0.15); color: var(--bo-color);    }

/* ── Pareto list items ──────────────────────────────────── */
.pareto-item {
  background: var(--bg2);
  border: 1px solid rgba(251,191,36,0.2);
  border-radius: var(--radius-sm);
  padding: 14px;
  margin-bottom: 10px;
}
.pareto-item h4 { font-size: 0.85rem; color: var(--pareto-gold); margin-bottom: 8px; }
.pareto-item .amounts-grid { margin-top: 4px; }
.pareto-item .ratings-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 10px;
}
.rating-chip {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 999px;
  font-size: 0.78rem;
  padding: 3px 10px;
  color: var(--text);
}
.rating-chip strong { color: var(--accent2); }

/* ── Loading overlay ────────────────────────────────────── */
.loading-overlay {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(15,15,26,0.85);
  backdrop-filter: blur(6px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
}
.loading-overlay p {
  color: var(--muted);
  font-size: 0.9rem;
}

/* ── Spinner ────────────────────────────────────────────── */
.spinner {
  width: 44px;
  height: 44px;
  border: 3px solid var(--card-border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ── Toast ──────────────────────────────────────────────── */
.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(80px);
  z-index: 300;
  background: var(--card);
  border: 1px solid var(--card-border);
  color: var(--text);
  font-size: 0.88rem;
  padding: 10px 20px;
  border-radius: 999px;
  box-shadow: var(--shadow);
  transition: transform 0.3s ease, opacity 0.3s ease;
  opacity: 0;
  pointer-events: none;
  white-space: nowrap;
}
.toast.visible {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}
.toast.error { border-color: var(--danger); color: var(--danger); }
.toast.success { border-color: var(--accent2); color: var(--accent2); }

/* ── Plotly chart container ─────────────────────────────────── */
.chart-container {
  width: 100%;
  height: 420px;
  /* No overflow:hidden — it clips Plotly's WebGL canvas and axis labels */
  background: var(--bg2);
  border-radius: var(--radius-sm);
}

/* Restyle Plotly modebar to match app theme */
.js-plotly-plot .plotly .modebar {
  background: rgba(28,28,50,0.8) !important;
  border-radius: var(--radius-sm);
}
.js-plotly-plot .plotly .modebar-btn path {
  fill: var(--muted) !important;
}
.js-plotly-plot .plotly .modebar-btn:hover path {
  fill: var(--text) !important;
}

/* ── Utility ────────────────────────────────────────────── */
.hidden { display: none !important; }