:root {
  --bg: #f3f6f5;
  --bg-accent: #e7efed;
  --ink: #163231;
  --muted: #5b6f6e;
  --line: #d5e0dd;
  --panel: #ffffff;
  --brand: #0f3d3e;
  --brand-soft: #1b5859;
  --accent: #c45c26;
  --ok: #1f7a4d;
  --warn: #a15c00;
  --danger: #a33b2b;
  --shadow: 0 18px 40px rgba(15, 61, 62, 0.08);
  --sidebar-start: #0f3d3e;
  --sidebar-mid: #164849;
  --sidebar-end: #1b3f3b;
  --sidebar-text: #edf5f4;
  --btn-text: #ffffff;
  --flash-ok-bg: #e8f6ee;
  --flash-ok-border: #c9e8d5;
  --flash-err-bg: #fceeee;
  --flash-err-border: #f0cfc9;
  --badge-ok-bg: #e7f5ec;
  --badge-draft-bg: #eef1f1;
  --badge-warn-bg: #fff1e5;
  --badge-danger-bg: #fceeee;
  --radius: 18px;
  --font: "Segoe UI", "Avenir Next", "Helvetica Neue", sans-serif;
  --display: "Iowan Old Style", "Palatino Linotype", "Book Antiqua", Georgia, serif;
  color-scheme: light;
}

html[data-theme="dark"] {
  --bg: #0f1717;
  --bg-accent: #152222;
  --ink: #e7f1f0;
  --muted: #9bb0ae;
  --line: #2a3b3a;
  --panel: #182423;
  --brand: #2f8f90;
  --brand-soft: #3aa3a4;
  --accent: #e08a55;
  --ok: #5dcaa0;
  --warn: #e0b05a;
  --danger: #e07a6c;
  --shadow: 0 18px 40px rgba(0, 0, 0, 0.35);
  --sidebar-start: #0b1414;
  --sidebar-mid: #12201f;
  --sidebar-end: #0f1a19;
  --sidebar-text: #edf5f4;
  --btn-text: #ffffff;
  --flash-ok-bg: #163528;
  --flash-ok-border: #245742;
  --flash-err-bg: #3a1f1c;
  --flash-err-border: #6a3a34;
  --badge-ok-bg: #163528;
  --badge-draft-bg: #243030;
  --badge-warn-bg: #3a2d18;
  --badge-danger-bg: #3a1f1c;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font);
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(196, 92, 38, 0.08), transparent 28%),
    linear-gradient(160deg, var(--bg), var(--bg-accent));
  min-height: 100vh;
  overflow-x: hidden;
}

img, svg, video { max-width: 100%; height: auto; }
a { color: var(--brand-soft); text-decoration: none; }
a:hover { color: var(--accent); }

.auth-shell, .setup-shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 1.25rem;
}

.auth-card, .setup-card {
  width: min(440px, 100%);
  background: color-mix(in srgb, var(--panel) 92%, transparent);
  border: 1px solid color-mix(in srgb, var(--line) 80%, transparent);
  border-radius: 28px;
  padding: clamp(1.4rem, 4vw, 2.4rem);
  box-shadow: var(--shadow);
  backdrop-filter: blur(8px);
}

.brand-mark {
  font-family: var(--display);
  font-size: clamp(1.6rem, 5vw, 2rem);
  letter-spacing: -0.03em;
  color: var(--brand);
  margin: 0 0 0.35rem;
}

.lede {
  color: var(--muted);
  margin: 0 0 1.6rem;
  line-height: 1.5;
}

.app-shell {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  min-height: 100vh;
  transition: grid-template-columns 180ms ease;
}
.app-shell.nav-collapsed {
  grid-template-columns: 84px minmax(0, 1fr);
}

.sidebar {
  background: linear-gradient(180deg, var(--sidebar-start) 0%, var(--sidebar-mid) 55%, var(--sidebar-end) 100%);
  color: var(--sidebar-text);
  padding: 1.5rem 1.1rem;
  position: sticky;
  top: 0;
  height: 100vh;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  overflow: auto;
}

.sidebar-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.5rem;
}
.sidebar .brand-mark { color: #fff; font-size: 1.55rem; margin: 0; }
.sidebar .brand-sub { color: rgba(237,245,244,0.7); font-size: 0.85rem; margin-top: 0.2rem; }
.nav-toggle {
  appearance: none;
  border: 1px solid rgba(255,255,255,0.18);
  background: rgba(255,255,255,0.08);
  color: #fff;
  border-radius: 10px;
  width: 36px;
  height: 36px;
  cursor: pointer;
  flex: 0 0 auto;
}
.nav-toggle:hover { background: rgba(255,255,255,0.16); }
.mobile-nav-toggle {
  display: none;
  appearance: none;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--ink);
  border-radius: 10px;
  width: 40px;
  height: 40px;
  cursor: pointer;
  flex: 0 0 auto;
  font-size: 1.1rem;
}
.nav-backdrop { display: none; }

.nav-list { display: grid; gap: 0.35rem; flex: 1; align-content: start; }
.nav-section {
  margin: 0.85rem 0 0.25rem;
  padding: 0 0.9rem;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(237,245,244,0.45);
}
.nav-list a {
  color: rgba(237,245,244,0.86);
  padding: 0.75rem 0.9rem;
  border-radius: 12px;
  display: flex;
  align-items: center;
  gap: 0.7rem;
}
.nav-list a:hover, .nav-list a.active {
  background: rgba(255,255,255,0.1);
  color: #fff;
}
.nav-icon {
  width: 1.1rem;
  text-align: center;
  flex: 0 0 auto;
  opacity: 0.9;
}
.sidebar-bottom { margin-top: auto; }

.app-shell.nav-collapsed .brand-mark,
.app-shell.nav-collapsed .brand-sub,
.app-shell.nav-collapsed .nav-label,
.app-shell.nav-collapsed .nav-section,
.app-shell.nav-collapsed .sidebar-bottom .btn {
  display: none;
}
.app-shell.nav-collapsed .sidebar { padding-inline: 0.7rem; }
.app-shell.nav-collapsed .sidebar-top { justify-content: center; }
.app-shell.nav-collapsed .nav-list a {
  justify-content: center;
  padding: 0.8rem 0.4rem;
}
.app-shell.nav-collapsed .nav-icon { font-size: 1.05rem; }

.main {
  padding: 1.4rem 1.6rem 2.5rem;
  min-width: 0;
  width: 100%;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.4rem;
}
.topbar-left {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  min-width: 0;
  flex: 1 1 auto;
}
.topbar-left > div { min-width: 0; }

.topbar h1 {
  font-family: var(--display);
  font-size: clamp(1.45rem, 4vw, 1.9rem);
  margin: 0;
  letter-spacing: -0.03em;
  overflow-wrap: anywhere;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: clamp(1rem, 3vw, 1.25rem);
  min-width: 0;
}

.stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
  margin-bottom: 1.2rem;
}

.stat {
  padding: 1.1rem 1.15rem;
  border-radius: 16px;
  background: linear-gradient(180deg, var(--panel), color-mix(in srgb, var(--bg-accent) 55%, var(--panel)));
  border: 1px solid var(--line);
  min-width: 0;
}
.stat .label { color: var(--muted); font-size: 0.85rem; }
.stat .value {
  font-family: var(--display);
  font-size: clamp(1.35rem, 4vw, 1.8rem);
  margin-top: 0.35rem;
  overflow-wrap: anywhere;
}

.actions {
  display: flex;
  gap: 0.65rem;
  flex-wrap: wrap;
  align-items: center;
}
.actions > * { min-width: 0; }

.btn, button.btn, input[type="submit"].btn {
  appearance: none;
  border: 0;
  border-radius: 12px;
  padding: 0.72rem 1rem;
  font: inherit;
  cursor: pointer;
  background: var(--brand);
  color: var(--btn-text);
  text-align: center;
  white-space: nowrap;
}
.btn:hover { background: var(--brand-soft); }
.btn-accent { background: var(--accent); }
.btn-accent:hover { filter: brightness(1.05); }
.btn-secondary {
  background: var(--panel);
  color: var(--ink);
  border: 1px solid var(--line);
}
.pref-chip {
  appearance: none;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--ink);
  border-radius: 10px;
  padding: 0.55rem 0.7rem;
  font: inherit;
  cursor: pointer;
}
.pref-chip:hover { border-color: var(--brand-soft); }
.pref-forms { display: flex; gap: 0.45rem; flex-wrap: wrap; align-items: center; }
.btn-secondary:hover { border-color: var(--brand-soft); color: var(--brand); }
.btn-danger { background: var(--danger); }

.flash {
  margin-bottom: 1rem;
  padding: 0.85rem 1rem;
  border-radius: 12px;
  background: var(--flash-ok-bg);
  color: var(--ok);
  border: 1px solid var(--flash-ok-border);
}
.flash-error {
  background: var(--flash-err-bg);
  color: var(--danger);
  border-color: var(--flash-err-border);
}

.table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin: 0 -0.15rem;
  padding: 0 0.15rem;
}
table {
  width: 100%;
  border-collapse: collapse;
  min-width: 560px;
}
table.lines-table { min-width: 680px; }
th, td {
  text-align: left;
  padding: 0.85rem 0.6rem;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}
th { color: var(--muted); font-weight: 600; font-size: 0.85rem; }
td { overflow-wrap: anywhere; }

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}
.form-grid .full { grid-column: 1 / -1; }
label {
  display: grid;
  gap: 0.35rem;
  font-size: 0.92rem;
  color: var(--muted);
  min-width: 0;
}
input, select, textarea {
  width: 100%;
  max-width: 100%;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 0.7rem 0.8rem;
  font: inherit;
  color: var(--ink);
  background: var(--panel);
}
textarea { min-height: 110px; resize: vertical; }
.errors { color: var(--danger); margin: 0 0 1rem; padding-left: 1.1rem; }

.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
  font-size: 0.78rem;
  background: var(--bg-accent);
  color: var(--brand);
}
.badge-sent, .badge-active, .badge-accepted, .badge-invoiced, .badge-paid, .badge-credited { background: var(--badge-ok-bg); color: var(--ok); }
.badge-draft, .badge-paused, .badge-ended, .badge-queued, .badge-skipped { background: var(--badge-draft-bg); color: var(--muted); }
.badge-overdue, .badge-partial, .badge-expired { background: var(--badge-warn-bg); color: var(--warn); }
.badge-rejected, .badge-cancelled { background: var(--badge-danger-bg); color: var(--danger); }

.muted { color: var(--muted); }
.stack { display: grid; gap: 1rem; }
.switcher { flex: 1 1 160px; max-width: 100%; }
.switcher select {
  min-width: 0;
  width: 100%;
}

.toolbar {
  display: flex;
  gap: 0.65rem;
  flex-wrap: wrap;
  align-items: center;
}
.toolbar .search-input,
.toolbar input[type="search"] {
  flex: 1 1 220px;
  min-width: 0;
}

.lines-table input { padding: 0.55rem 0.65rem; }
.line-card-meta {
  display: none;
}

@media (max-width: 1100px) {
  .stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 960px) {
  .app-shell,
  .app-shell.nav-collapsed {
    grid-template-columns: minmax(0, 1fr);
  }

  .mobile-nav-toggle { display: inline-flex; align-items: center; justify-content: center; }
  .desktop-nav-toggle { display: none; }

  .nav-backdrop {
    display: block;
    position: fixed;
    inset: 0;
    background: rgba(15, 61, 62, 0.45);
    opacity: 0;
    pointer-events: none;
    transition: opacity 180ms ease;
    z-index: 40;
  }

  .sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: min(300px, 86vw);
    height: 100vh;
    z-index: 50;
    transform: translateX(-105%);
    transition: transform 180ms ease;
    box-shadow: none;
  }

  .app-shell.nav-collapsed .brand-mark,
  .app-shell.nav-collapsed .brand-sub,
  .app-shell.nav-collapsed .nav-label,
  .app-shell.nav-collapsed .nav-section,
  .app-shell.nav-collapsed .sidebar-bottom .btn {
    display: revert;
  }
  .app-shell.nav-collapsed .sidebar { padding-inline: 1.1rem; }
  .app-shell.nav-collapsed .sidebar-top { justify-content: space-between; }
  .app-shell.nav-collapsed .nav-list a {
    justify-content: flex-start;
    padding: 0.75rem 0.9rem;
  }

  .app-shell.nav-open .sidebar {
    transform: translateX(0);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.28);
  }
  .app-shell.nav-open .nav-backdrop {
    opacity: 1;
    pointer-events: auto;
  }

  .main { padding: 0.9rem 0.9rem 2rem; }
  .topbar {
    flex-direction: column;
    align-items: stretch;
    gap: 0.85rem;
  }
  .topbar .actions {
    width: 100%;
  }
  .topbar .actions .btn,
  .topbar .actions .switcher {
    flex: 1 1 100%;
  }
  .form-grid { grid-template-columns: 1fr; }
  .btn, button.btn, input[type="submit"].btn { white-space: normal; }
}

@media (max-width: 720px) {
  .stats { grid-template-columns: 1fr; gap: 0.75rem; }
  .stat { padding: 0.95rem 1rem; }

  table,
  table.lines-table {
    min-width: 0;
  }

  /* Card-style tables on small phones */
  table.responsive-cards thead {
    display: none;
  }
  table.responsive-cards,
  table.responsive-cards tbody,
  table.responsive-cards tr,
  table.responsive-cards td {
    display: block;
    width: 100%;
  }
  table.responsive-cards tr {
    border: 1px solid var(--line);
    border-radius: 14px;
    padding: 0.85rem 0.9rem;
    margin-bottom: 0.75rem;
    background: var(--panel);
  }
  table.responsive-cards td {
    border: 0;
    padding: 0.35rem 0;
    display: grid;
    grid-template-columns: 7.5rem minmax(0, 1fr);
    gap: 0.65rem;
    align-items: start;
  }
  table.responsive-cards td::before {
    content: attr(data-label);
    color: var(--muted);
    font-size: 0.78rem;
    font-weight: 600;
  }
  table.responsive-cards td:last-child {
    padding-bottom: 0;
  }
  table.responsive-cards td[data-label=""],
  table.responsive-cards td:not([data-label]) {
    grid-template-columns: 1fr;
  }
  table.responsive-cards td[data-label=""]::before,
  table.responsive-cards td:not([data-label])::before {
    display: none;
  }

  table.lines-table thead { display: none; }
  table.lines-table,
  table.lines-table tbody,
  table.lines-table tr,
  table.lines-table td {
    display: block;
    width: 100%;
  }
  table.lines-table tr {
    border: 1px solid var(--line);
    border-radius: 14px;
    padding: 0.85rem;
    margin-bottom: 0.8rem;
    background: color-mix(in srgb, var(--bg-accent) 70%, var(--panel));
  }
  table.lines-table td {
    border: 0;
    padding: 0.4rem 0;
  }
  table.lines-table td::before {
    content: attr(data-label);
    display: block;
    color: var(--muted);
    font-size: 0.78rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
  }

  .panel .actions {
    width: 100%;
  }
  .panel .actions .btn {
    flex: 1 1 calc(50% - 0.4rem);
  }
}