/* ------------------------------------------------------------------
   Balance Bridge Portal — hand-written CSS on the brand tokens.
   Mirrors site/src/styles/global.css: navy/ink/emerald/mist/paper,
   Space Grotesk headings, Inter body, 16px-radius cards.
------------------------------------------------------------------- */

:root {
  --ink: #071522;
  --navy: #0b1f33;
  --navy-800: #122c47;
  --navy-700: #1b3a5c;
  --steel: #526175;
  --steel-400: #8b99ab;
  --mist: #eef2f6;
  --paper: #f8fafc;
  --accent: #10b981;
  --accent-400: #34d399;
  --accent-600: #0ca678;
  --danger: #dc2626;
  --font-display: 'Space Grotesk Variable', 'Space Grotesk', ui-sans-serif, system-ui, sans-serif;
  --font-sans: 'Inter Variable', 'Inter', ui-sans-serif, system-ui, sans-serif;
  --radius: 16px;
  --shadow-card: 0 1px 2px rgba(11, 31, 51, 0.05), 0 8px 24px -12px rgba(11, 31, 51, 0.12);
  --shadow-lift: 0 16px 40px -16px rgba(11, 31, 51, 0.25);
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.55;
  color: var(--navy);
  background: var(--paper);
  font-feature-settings: 'cv11';
}

h1, h2, h3 {
  font-family: var(--font-display);
  letter-spacing: -0.02em;
  line-height: 1.12;
  margin: 0 0 0.35em;
  color: var(--navy);
}
h1 { font-size: 1.9rem; font-weight: 700; }
h2 { font-size: 1.15rem; font-weight: 600; }
h3, .h3 { font-size: 1rem; font-weight: 600; }
p { margin: 0.4em 0; }
a { color: var(--accent-600); }
code { font-size: 0.85em; }

.tabular { font-variant-numeric: tabular-nums; }
.muted { color: var(--steel); }
.small { font-size: 0.83rem; }
.strong { font-weight: 600; color: var(--navy); }
.visually-hidden {
  position: absolute; width: 1px; height: 1px;
  clip: rect(0 0 0 0); overflow: hidden; white-space: nowrap;
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 4px;
}

/* ---------- Top bar ---------- */
.topbar {
  position: sticky; top: 0; z-index: 40;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0.65rem 1.25rem;
  background: var(--navy);
  color: #fff;
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.08);
}
.brand { display: flex; align-items: center; gap: 0.6rem; text-decoration: none; }
.brand-mark { width: 28px; height: 28px; }
.brand-mark.lg { width: 40px; height: 40px; }
.brand-word {
  font-family: var(--font-display);
  font-weight: 600; font-size: 1.02rem; color: #fff; letter-spacing: -0.01em;
}
.brand-word em { font-style: normal; color: var(--accent-400); font-weight: 500; }
.topbar-right { display: flex; align-items: center; gap: 0.75rem; }
.user-chip { color: var(--steel-400); font-size: 0.9rem; }

/* ---------- Shell: side nav + content ---------- */
.shell { display: flex; min-height: calc(100vh - 56px); }
.sidenav {
  width: 218px; flex: none;
  padding: 1.25rem 0.75rem;
  display: flex; flex-direction: column; gap: 2px;
}
.nav-link {
  display: flex; align-items: center; gap: 0.65rem;
  padding: 0.55rem 0.8rem;
  border-radius: 10px;
  color: var(--steel); text-decoration: none;
  font-weight: 500; font-size: 0.93rem;
  transition: background 150ms ease, color 150ms ease;
}
.nav-link svg { width: 19px; height: 19px; flex: none; }
.nav-link:hover { background: var(--mist); color: var(--navy); }
.nav-link.active { background: var(--navy); color: #fff; }
.nav-link.active svg { color: var(--accent-400); }
.nav-admin { margin-top: auto; border-top: 1px solid var(--mist); border-radius: 0 0 10px 10px; padding-top: 0.8rem; }

.content {
  flex: 1; min-width: 0;
  padding: 1.75rem clamp(1rem, 3vw, 2.5rem) 5rem;
  max-width: 1080px;
}

/* ---------- Mobile bottom tabs ---------- */
.tabbar { display: none; }
@media (max-width: 800px) {
  .sidenav { display: none; }
  .tabbar {
    position: fixed; bottom: 0; left: 0; right: 0; z-index: 40;
    display: flex; justify-content: space-around;
    background: #fff;
    border-top: 1px solid var(--mist);
    padding: 0.3rem 0.25rem calc(0.3rem + env(safe-area-inset-bottom));
  }
  .tabbar .nav-link {
    flex-direction: column; gap: 2px;
    padding: 0.3rem 0.4rem;
    font-size: 0.62rem;
  }
  .tabbar .nav-link.active { background: none; color: var(--accent-600); }
  .tabbar .nav-link.active svg { color: var(--accent-600); }
  .tabbar .nav-admin { margin: 0; border: none; padding-top: 0.3rem; }
  /* keep the tab bar usable: hide the two least-used tabs on small screens */
  .tabbar .nav-link[href^='/signatures'], .tabbar .nav-link[href^='/settings'] { display: none; }
  .hide-sm { display: none; }
}

/* ---------- Page head ---------- */
.page-head { margin-bottom: 1.5rem; }
.page-head .sub { color: var(--steel); margin-top: 0.1rem; max-width: 56ch; }

/* ---------- Cards ---------- */
.card {
  background: #fff;
  border: 1px solid rgba(11, 31, 51, 0.08);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
  padding: 1.25rem 1.4rem;
  margin-bottom: 1.25rem;
}
.card-head {
  display: flex; align-items: baseline; justify-content: space-between; gap: 1rem;
  margin-bottom: 0.75rem;
}
.card-head h2 { margin: 0; }
.slim-card { padding: 0.8rem 1.4rem; }
.notice-card { border-color: rgba(16, 185, 129, 0.35); }

.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 1.25rem; }
@media (max-width: 900px) { .two-col { grid-template-columns: 1fr; } }

/* ---------- Stat cards ---------- */
.stat-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem;
  margin-bottom: 1.5rem;
}
@media (max-width: 900px) { .stat-grid { grid-template-columns: repeat(2, 1fr); } }
.stat-card {
  display: flex; flex-direction: column; gap: 0.15rem;
  background: #fff;
  border: 1px solid rgba(11, 31, 51, 0.08);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
  padding: 1rem 1.15rem;
  text-decoration: none;
  transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease;
}
a.stat-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-lift); border-color: rgba(16, 185, 129, 0.4); }
.stat-num {
  font-family: var(--font-display);
  font-size: 1.6rem; font-weight: 700; color: var(--navy); letter-spacing: -0.02em;
}
.stat-label { color: var(--steel); font-size: 0.83rem; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.4rem;
  border-radius: 12px;
  padding: 0.65rem 1.25rem;
  font: 600 0.92rem var(--font-sans);
  cursor: pointer; text-decoration: none;
  border: 1px solid transparent;
  transition: transform 160ms ease, box-shadow 160ms ease, background 160ms ease, border-color 160ms ease;
}
.btn-primary {
  background: var(--accent); color: var(--ink);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.2), 0 8px 24px -8px rgba(16, 185, 129, 0.55);
}
.btn-primary:hover { background: var(--accent-400); transform: translateY(-1px); }
.btn-primary:active { transform: none; }
.btn-ghost { background: transparent; color: var(--navy); border-color: rgba(11, 31, 51, 0.2); }
.btn-ghost:hover { border-color: rgba(11, 31, 51, 0.45); transform: translateY(-1px); }
.topbar .btn-ghost { color: #fff; border-color: rgba(255, 255, 255, 0.25); }
.topbar .btn-ghost:hover { border-color: rgba(255, 255, 255, 0.5); }
.btn-sm { padding: 0.4rem 0.8rem; font-size: 0.83rem; border-radius: 10px; }
.btn-block { width: 100%; }
.btn.danger, .btn-ghost.danger { color: var(--danger); border-color: rgba(220, 38, 38, 0.3); }
.btn.danger:hover { border-color: rgba(220, 38, 38, 0.6); }

.link { color: var(--accent-600); font-weight: 500; text-decoration: none; }
.link:hover { text-decoration: underline; text-underline-offset: 3px; }
.action-row { display: flex; flex-wrap: wrap; gap: 0.5rem; align-items: center; }

/* ---------- Forms ---------- */
.stack { display: flex; flex-direction: column; gap: 0.9rem; }
.stack.narrow { max-width: 380px; }
.field { display: flex; flex-direction: column; gap: 0.3rem; }
.field > span { font-size: 0.83rem; font-weight: 600; color: var(--navy); }
.field input, .field select, .field textarea {
  font: 400 0.95rem var(--font-sans);
  color: var(--navy);
  background: #fff;
  border: 1px solid rgba(11, 31, 51, 0.18);
  border-radius: 10px;
  padding: 0.6rem 0.75rem;
  transition: border-color 150ms ease, box-shadow 150ms ease;
}
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.18);
}
.field textarea { resize: vertical; min-height: 2.6em; }
.field-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 0.9rem; }
.inline { display: inline-flex; align-items: center; gap: 0.75rem; flex-wrap: wrap; }
.inline-field { flex-direction: row; align-items: center; gap: 0.5rem; }
.code-input { letter-spacing: 0.35em; font-variant-numeric: tabular-nums; text-align: center; max-width: 180px; }

/* ---------- Tables & lists ---------- */
.table { width: 100%; border-collapse: collapse; font-size: 0.92rem; }
.table th {
  text-align: left; font-weight: 600; color: var(--steel);
  font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.06em;
  padding: 0.45rem 0.6rem; border-bottom: 1px solid var(--mist);
}
.table td { padding: 0.6rem; border-bottom: 1px solid var(--mist); vertical-align: middle; }
.table tr:last-child td { border-bottom: none; }
.table.small { font-size: 0.83rem; }
.row-actions { display: flex; gap: 0.4rem; justify-content: flex-end; flex-wrap: wrap; }
.muted-row td { opacity: 0.55; }

.list { list-style: none; margin: 0; padding: 0; }
.list-row {
  display: flex; align-items: center; gap: 0.7rem; flex-wrap: wrap;
  padding: 0.55rem 0;
  border-bottom: 1px solid var(--mist);
}
.list-row:last-child { border-bottom: none; }
.dot { width: 7px; height: 7px; border-radius: 50%; background: var(--accent); flex: none; }
.empty { color: var(--steel); padding: 0.75rem 0; }
.rule { border: none; border-top: 1px solid var(--mist); margin: 1.1rem 0; }

/* ---------- Chips & badges ---------- */
.chip {
  display: inline-block;
  font-size: 0.72rem; font-weight: 600;
  padding: 0.15rem 0.55rem;
  border-radius: 999px;
  background: var(--mist); color: var(--steel);
  white-space: nowrap;
}
.chip-you { background: rgba(16, 185, 129, 0.14); color: var(--accent-600); }
.status-open, .status-pending, .status-active { background: rgba(16, 185, 129, 0.14); color: var(--accent-600); }
.status-paid, .status-completed { background: rgba(11, 31, 51, 0.08); color: var(--navy); }
.status-past_due, .status-payment_failed, .status-uncollectible { background: rgba(220, 38, 38, 0.1); color: var(--danger); }
.status-void, .status-draft { background: var(--mist); color: var(--steel-400); }
.badge {
  display: inline-block; margin-left: 0.4rem;
  font-size: 0.68rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.05em;
  color: var(--accent-600);
}
.code-chip { background: var(--mist); border-radius: 6px; padding: 0.1rem 0.4rem; font-size: 0.78rem; }

/* ---------- Flash ---------- */
.flash {
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
  border-radius: 12px;
  padding: 0.7rem 1rem;
  margin-bottom: 1.1rem;
  font-size: 0.92rem; font-weight: 500;
}
.flash-ok { background: rgba(16, 185, 129, 0.12); color: #05603a; border: 1px solid rgba(16, 185, 129, 0.35); }
.flash-error { background: rgba(220, 38, 38, 0.08); color: #991b1b; border: 1px solid rgba(220, 38, 38, 0.3); }
.flash-x {
  background: none; border: none; cursor: pointer;
  font-size: 1.15rem; line-height: 1; color: inherit; opacity: 0.6;
}
.flash-x:hover { opacity: 1; }

/* ---------- Auth pages ---------- */
body.auth {
  background:
    radial-gradient(52% 42% at 50% 0%, rgba(16, 185, 129, 0.14), transparent 70%),
    var(--navy);
  min-height: 100vh;
}
.auth-wrap {
  min-height: 100vh;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  padding: 2rem 1rem;
}
.auth-card {
  width: 100%; max-width: 400px;
  background: #fff;
  border-radius: 20px;
  box-shadow: 0 24px 64px -24px rgba(2, 8, 16, 0.6);
  padding: 2.1rem 2rem;
}
.auth-brand { display: flex; flex-direction: column; align-items: center; gap: 0.5rem; margin-bottom: 1.4rem; }
.auth-brand-name { font-family: var(--font-display); font-weight: 600; font-size: 1.15rem; color: var(--navy); }
.auth-brand-name span {
  display: block; text-align: center;
  font-family: var(--font-sans); font-size: 0.63rem; font-weight: 500;
  letter-spacing: 0.18em; color: var(--steel);
}
.auth-title { font-size: 1.4rem; text-align: center; }
.auth-sub { color: var(--steel); text-align: center; font-size: 0.92rem; margin-bottom: 1.25rem; }
.auth-links { text-align: center; margin-top: 1.1rem; font-size: 0.9rem; }
.auth-links a { color: var(--accent-600); }
.auth-foot { color: var(--steel-400); font-size: 0.83rem; margin-top: 1.5rem; }
.auth-foot a { color: var(--steel-400); }

/* ---------- Dashboard / thread / tasks ---------- */
.thread { display: flex; flex-direction: column; gap: 0.8rem; margin-bottom: 1.25rem; }
.bubble {
  background: #fff;
  border: 1px solid rgba(11, 31, 51, 0.08);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
  padding: 0.85rem 1.1rem;
  max-width: 44rem;
}
.bubble.mine { border-color: rgba(16, 185, 129, 0.35); }
.bubble header { display: flex; gap: 0.6rem; align-items: baseline; margin-bottom: 0.2rem; }
.bubble p { margin: 0; white-space: pre-wrap; }

.task-list { list-style: none; margin: 0; padding: 0; }
.task-row {
  display: flex; align-items: center; gap: 0.75rem;
  padding: 0.55rem 0;
  border-bottom: 1px solid var(--mist);
}
.task-row:last-child { border-bottom: none; }
.task-row.done .task-title { text-decoration: line-through; color: var(--steel-400); }
.task-body { display: flex; flex-direction: column; flex: 1; min-width: 0; }
.checkbox {
  width: 22px; height: 22px; flex: none;
  display: inline-flex; align-items: center; justify-content: center;
  border: 2px solid rgba(11, 31, 51, 0.25);
  border-radius: 7px;
  background: #fff; color: #fff;
  cursor: pointer; padding: 0;
  transition: background 150ms ease, border-color 150ms ease;
}
.checkbox svg { width: 13px; height: 13px; }
.checkbox.checked { background: var(--accent); border-color: var(--accent); }
.checkbox.locked { cursor: default; opacity: 0.55; }
.checkbox:not(.locked):hover { border-color: var(--accent); }

/* ---------- Upload ---------- */
.upload-card { border-style: dashed; border-width: 2px; border-color: rgba(11, 31, 51, 0.15); }
.upload-card.dragover { border-color: var(--accent); background: rgba(16, 185, 129, 0.05); }
.upload-inner { display: flex; align-items: center; gap: 0.9rem; flex-wrap: wrap; }
.upload-icon { width: 26px; height: 26px; color: var(--accent-600); flex: none; }
.file-label { position: relative; overflow: hidden; }
.file-label input[type='file'] { position: absolute; inset: 0; opacity: 0; cursor: pointer; }

/* ---------- Signature embed ---------- */
.sign-frame-card { padding: 0.5rem; }
.sign-frame { display: block; width: 100%; height: min(78vh, 900px); border: none; border-radius: 12px; }

.qr { border-radius: 12px; border: 1px solid var(--mist); margin: 0.5rem 0; }

/* ---------- Error page ---------- */
.error-page { text-align: center; padding: 3rem 1rem; }
.error-page p { color: var(--steel); margin-bottom: 1.5rem; }

@media (prefers-reduced-motion: reduce) {
  * { transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; }
}