:root {
  --bg: #0f1923;
  --surface: #1a2733;
  --surface-alt: #243342;
  --accent: #22c55e;
  --accent-light: #4ade80;
  --accent-glow: rgba(34, 197, 94, 0.15);
  --text: #e8edf2;
  --text-muted: #8899a6;
  --border: #2d3f4f;
  --success: #22c55e;
  --danger: #ef4444;
  --warning: #f59e0b;
  --info: #3b82f6;
  --info-light: #60a5fa;
  --radius: 12px;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100dvh;
  padding-top: env(safe-area-inset-top);
  padding-bottom: env(safe-area-inset-bottom);
}

.container { max-width: 860px; margin: 0 auto; padding: 0 16px; }

/* Header */
.app-header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 12px 0;
  position: sticky;
  top: 0;
  z-index: 100;
}
.app-header .container { display: flex; align-items: center; justify-content: space-between; }
.brand {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--accent-light);
  text-decoration: none;
}
.header-nav { display: flex; gap: 16px; }
.header-nav a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
}
.header-nav a:hover { color: var(--text); }

/* Main */
main { padding: 20px 0 80px; }

/* Cards */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 16px;
}
.card h2 {
  font-size: 1.125rem;
  margin-bottom: 16px;
  color: var(--text);
}

.workspace-summary {
  margin-bottom: 24px;
}
.workspace-summary-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 16px;
}
.workspace-summary-heading p {
  color: var(--text-muted);
  max-width: 42rem;
}
.workspace-summary-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.workspace-summary-nav a {
  color: var(--accent-light);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 600;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: rgba(36, 51, 66, 0.7);
}
.workspace-summary-nav a:hover {
  border-color: var(--accent);
  color: var(--text);
}
.workspace-assumptions {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
}
.workspace-assumption-card {
  background: var(--surface-alt);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px;
}
.workspace-assumption-label {
  display: block;
  color: var(--text-muted);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 6px;
}
.workspace-position {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: 12px;
  margin-top: 16px;
}
.workspace-position-card {
  background: linear-gradient(180deg, rgba(36, 51, 66, 0.95), rgba(26, 39, 51, 0.95));
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px;
}
.workspace-position-card p {
  color: var(--text-muted);
  font-size: 0.8125rem;
  line-height: 1.45;
  margin-top: 8px;
}
.workspace-position-value {
  display: block;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text);
}
.workspace-position-value.is-positive {
  color: var(--accent-light);
}
.workspace-position-value.is-negative {
  color: #fca5a5;
}

/* Forms */
label {
  display: block;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 4px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"],
input[type="date"],
input[type="file"],
textarea,
select {
  width: 100%;
  padding: 10px 12px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 1rem;
  margin-bottom: 14px;
  font-family: inherit;
}
input:focus, textarea:focus, select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}
input[type="date"]::-webkit-calendar-picker-indicator { filter: invert(0.8); cursor: pointer; }

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0 12px;
}
@media (max-width: 480px) {
  .form-row { grid-template-columns: 1fr; }
}
@media (max-width: 720px) {
  .workspace-summary-heading {
    flex-direction: column;
  }
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  border: none;
  border-radius: 8px;
  font-size: 0.9375rem;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  transition: background 0.15s, transform 0.1s;
  font-family: inherit;
}
.btn:active { transform: scale(0.97); }
.btn-primary {
  background: var(--accent);
  color: #fff;
}
.btn-primary:hover { background: var(--accent-light); }
.btn-secondary {
  background: var(--surface-alt);
  color: var(--text);
}
.btn-secondary:hover { background: var(--border); }
.btn-danger {
  background: var(--danger);
  color: #fff;
}
.btn-block { width: 100%; }
.btn-sm { padding: 6px 12px; font-size: 0.8125rem; }

/* Alerts */
.alert {
  padding: 12px 16px;
  border-radius: 8px;
  margin-bottom: 16px;
  font-size: 0.875rem;
}
.alert-error { background: rgba(239,68,68,0.15); border: 1px solid var(--danger); color: var(--danger); }
.alert-success { background: rgba(34,197,94,0.15); border: 1px solid var(--success); color: var(--success); }
.alert-warning { background: rgba(245,158,11,0.15); border: 1px solid var(--warning); color: #fbbf24; }
.alert-info { background: rgba(59,130,246,0.15); border: 1px solid var(--info); color: var(--info-light); }

.table-wrap {
  width: 100%;
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: 10px;
}
.data-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 620px;
}
.data-table th,
.data-table td {
  padding: 12px 14px;
  text-align: left;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}
.data-table th {
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-size: 0.75rem;
  background: rgba(15, 25, 35, 0.45);
}
.data-table tr:last-child td {
  border-bottom: none;
}
code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.875rem;
  color: #c7f9cc;
}

/* Partner section */
.invite-link {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px;
  font-family: monospace;
  font-size: 0.8125rem;
  word-break: break-all;
  margin: 12px 0;
  color: var(--accent-light);
}
.partner-status {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px;
  background: var(--surface-alt);
  border-radius: 8px;
  margin-bottom: 12px;
}
.partner-status .dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--success);
  flex-shrink: 0;
}

/* Stats */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 12px;
  margin-bottom: 16px;
}
.stat-box {
  background: var(--surface-alt);
  border-radius: 8px;
  padding: 14px;
  text-align: center;
}
.stat-box .stat-value {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text);
}
.stat-box .stat-value.is-positive {
  color: var(--accent-light);
}
.stat-box .stat-value.is-negative {
  color: #fca5a5;
}
.stat-box .stat-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-top: 2px;
}

/* Comparison highlight */
.savings-box {
  background: var(--accent-glow);
  border: 2px solid var(--accent);
  border-radius: var(--radius);
  padding: 20px;
  text-align: center;
  margin: 16px 0;
}
.savings-box .savings-value {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent-light);
}
.savings-box .savings-label {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-top: 4px;
}

/* Chart container */
.chart-wrap {
  position: relative;
  width: 100%;
  margin: 16px 0;
}
.chart-wrap canvas {
  width: 100% !important;
  max-height: 300px;
}

/* Section divider */
.section-divider {
  border: none;
  border-top: 2px dashed var(--border);
  margin: 32px 0;
}

/* Empty state */
.empty-state {
  text-align: center;
  padding: 40px 16px;
  color: var(--text-muted);
}
.empty-state p { margin-bottom: 16px; }

/* Public planner and private CSV workspace */
.fin-hero { padding: 64px 0 32px; }
.fin-eyebrow { color: var(--accent-light); font-size: .8rem; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; margin-bottom: 16px; }
.fin-hero h1 { font-size: clamp(2.3rem, 6vw, 4.6rem); line-height: 1.08; letter-spacing: -.04em; max-width: 850px; margin: 0 0 24px; }
.fin-hero h1 span { color: var(--accent-light); }
.fin-lead { max-width: 720px; font-size: 1.15rem; color: var(--text-muted); margin-bottom: 24px; }
.fin-actions { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; margin: 18px 0; }
.fin-actions .btn { white-space: normal; }
.fin-trust, .fin-footnote { color: var(--text-muted); font-size: .88rem; margin: 16px 0; }
.fin-preview { display: flex; flex-wrap: wrap; gap: 22px; align-items: center; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 28px; margin-top: 32px; }
.fin-preview span { display: block; color: var(--text-muted); font-size: .9rem; }
.fin-preview strong { font-size: 1.35rem; }
.fin-preview p { flex-basis: 100%; color: var(--text-muted); font-size: .85rem; margin: 0; }
.fin-preview-total { border-left: 3px solid var(--accent); padding: 12px 18px; color: var(--accent-light); font-weight: 700; font-size: 1.2rem; margin: 16px 0; }
.fin-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 240px), 1fr)); gap: 18px; }
.fin-grid .card { margin: 0 0 20px; }
.fin-step { color: var(--accent-light); font-weight: 700; font-size: 1.4rem; }
.fin-privacy { border-color: var(--accent); }
.fin-analysis-heading { margin: 32px 0; }
.fin-analysis-heading h1 { font-size: clamp(2rem, 5vw, 3.2rem); line-height: 1.15; margin-bottom: 18px; }
.fin-checkbox { display: flex; align-items: center; gap: 10px; }
.fin-checkbox input { width: auto; margin: 0; }
#csv-analyser [hidden] { display: none !important; }
#csv-status:not(:empty) { background: var(--surface-alt); border-radius: var(--radius); padding: 16px; margin-bottom: 20px; overflow-wrap: anywhere; }
.fin-insight { border-top: 1px solid var(--border); padding: 20px 0; }
.fin-insight h3 { margin-bottom: 10px; overflow-wrap: anywhere; }
.fin-evidence { margin-top: 16px; }
.fin-evidence summary { color: var(--accent-light); cursor: pointer; }
.fin-evidence td { overflow-wrap: anywhere; max-width: 360px; }
#csv-preview select { min-width: 150px; }
.legacy-import { display: flex; flex-wrap: wrap; gap: 16px; align-items: center; padding: 16px 0; }
@media (max-width: 600px) { .fin-hero { padding-top: 32px; } .fin-actions .btn { width: 100%; text-align: center; } .fin-preview { padding: 20px; } .header-nav { flex-wrap: wrap; } }