/*
 * UnitPilot — design system
 * Matches the landing page tone: calm, paper, restrained accents.
 */

:root {
  --bg: #faf9f6;
  --surface: #ffffff;
  --surface-sunk: #f3f1ec;
  --fg: #1a1a1a;
  --muted: #6b6b6b;
  --muted-soft: #9a978f;
  --line: #e8e6e0;
  --line-strong: #d6d3cc;

  --accent: #2f6f4f;
  --accent-soft: #e6efe9;
  --warn: #b45309;
  --warn-soft: #fdf3e6;
  --bad: #b91c1c;
  --bad-soft: #fbeaea;
  --info: #475569;
  --info-soft: #eef2f6;

  --font-serif: "Iowan Old Style", "Palatino", "Cambria", Georgia, ui-serif, serif;
  --font-sans: -apple-system, BlinkMacSystemFont, "Inter", "Segoe UI", Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "JetBrains Mono", Menlo, Consolas, monospace;

  --radius-sm: 6px;
  --radius: 10px;
  --radius-lg: 16px;

  --shadow-sm: 0 1px 2px rgba(20, 20, 20, 0.04);
  --shadow: 0 1px 3px rgba(20, 20, 20, 0.06), 0 8px 24px rgba(20, 20, 20, 0.04);

  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;
  --space-8: 72px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4 {
  font-family: var(--font-serif);
  font-weight: 500;
  letter-spacing: -0.01em;
  margin: 0 0 var(--space-4);
}

h1 { font-size: 2.25rem; line-height: 1.15; }
h2 { font-size: 1.5rem;  line-height: 1.2; }
h3 { font-size: 1.15rem; line-height: 1.3; }

p { margin: 0 0 var(--space-3); }

a { color: var(--fg); text-decoration: underline; text-underline-offset: 3px; text-decoration-color: var(--line-strong); }
a:hover { text-decoration-color: var(--fg); }

small, .text-sm { font-size: 0.875rem; }
.text-muted { color: var(--muted); }
.text-mono  { font-family: var(--font-mono); font-size: 0.875rem; }

em.accent, .accent { font-style: italic; color: var(--fg); }

/* Layout */
.container {
  max-width: 1040px;
  margin: 0 auto;
  padding: 0 var(--space-5);
}

.site-header {
  border-bottom: 1px solid var(--line);
  background: var(--bg);
  padding: var(--space-4) 0;
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}
.brand {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 500;
  letter-spacing: -0.01em;
  text-decoration: none;
}
.brand .dot { color: var(--accent); }
.nav {
  display: flex;
  align-items: center;
  gap: var(--space-5);
  font-size: 0.95rem;
}
.nav a { text-decoration: none; color: var(--muted); }
.nav a:hover { color: var(--fg); }
.nav form { display: inline; margin: 0; }
.nav .nav-link-btn {
  background: none; border: 0; padding: 0;
  font: inherit; color: var(--muted); cursor: pointer;
}
.nav .nav-link-btn:hover { color: var(--fg); }
.nav-account {
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px dotted var(--line-strong);
}
.nav-account:hover { color: var(--fg); border-bottom-color: var(--fg); }

.site-footer {
  border-top: 1px solid var(--line);
  margin-top: var(--space-8);
  padding: var(--space-5) 0;
  color: var(--muted);
  font-size: 0.875rem;
}

main { padding: var(--space-6) 0 var(--space-7); }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 10px 18px;
  border-radius: var(--radius);
  border: 1px solid transparent;
  background: var(--fg);
  color: var(--bg);
  font: inherit;
  font-weight: 500;
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.04s ease, background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}
.btn:hover { background: #000; }
.btn:active { transform: translateY(1px); }
.btn[disabled] { opacity: 0.5; cursor: not-allowed; }
.btn-ghost {
  background: transparent;
  color: var(--fg);
  border-color: var(--line-strong);
}
.btn-ghost:hover { background: var(--surface-sunk); }
.btn-block { width: 100%; }
.btn-sm { padding: 6px 12px; font-size: 0.875rem; border-radius: var(--radius-sm); }
.btn-danger {
  color: var(--bad);
  border-color: var(--line-strong);
}
.btn-danger:hover {
  background: var(--bad-soft);
  color: var(--bad);
  border-color: var(--bad);
}
.inline-form { display: inline; margin: 0; }

/* Cards */
.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: var(--shadow-sm);
}
.card-tight { padding: var(--space-5); }

/* Forms */
.field { margin-bottom: var(--space-4); }
.field label {
  display: block;
  font-size: 0.875rem;
  color: var(--muted);
  margin-bottom: 6px;
}
.field input[type="text"],
.field input[type="email"],
.field input[type="password"],
.field input[type="number"],
.field input[type="date"],
.field textarea {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--fg);
  font: inherit;
}
.field textarea { resize: vertical; min-height: 80px; line-height: 1.45; }
.field input:focus, .field textarea:focus {
  outline: none;
  border-color: var(--fg);
  box-shadow: 0 0 0 3px rgba(20,20,20,0.06);
}
.field .hint  { font-size: 0.8125rem; color: var(--muted); margin-top: 6px; }
.field .error { font-size: 0.8125rem; color: var(--bad); margin-top: 6px; }

/* Flash */
.flash {
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  padding: 10px 14px;
  margin-bottom: var(--space-4);
  background: var(--surface);
  font-size: 0.9375rem;
}
.flash-notice { background: var(--accent-soft); border-color: var(--accent); color: #1f4a35; }
.flash-alert  { background: var(--bad-soft);    border-color: var(--bad);    color: #7c1f1f; }

/* Auth shell — centered narrow card */
.auth-shell {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: var(--space-7) var(--space-4);
}
.auth-card {
  width: 100%;
  max-width: 420px;
}
.auth-card h1 { font-size: 1.75rem; margin-bottom: var(--space-2); }
.auth-card .lede { color: var(--muted); margin-bottom: var(--space-5); }
.auth-foot {
  text-align: center;
  margin-top: var(--space-4);
  font-size: 0.9375rem;
  color: var(--muted);
}

/* Dashboard */
.dashboard-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}
@media (max-width: 720px) {
  .dashboard-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
.metric {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: var(--space-4) var(--space-5);
}
.metric .label {
  font-size: 0.8125rem;
  color: var(--muted);
  letter-spacing: 0.02em;
  text-transform: uppercase;
}
.metric .value {
  font-family: var(--font-serif);
  font-size: 2rem;
  line-height: 1.1;
  margin-top: var(--space-2);
}

.section-heading {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: var(--space-4);
}
.section-heading h2 { margin: 0; }
.section-heading .meta { color: var(--muted); font-size: 0.875rem; }

.empty-state {
  background: var(--surface);
  border: 1px dashed var(--line-strong);
  border-radius: var(--radius);
  padding: var(--space-6);
  text-align: center;
  color: var(--muted);
}
.empty-state .title {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  color: var(--fg);
  margin-bottom: var(--space-2);
}
.empty-state .btn { margin-top: var(--space-4); }

/* Unit list */
.unit-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  overflow: hidden;
}
.unit-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-4) var(--space-5);
  border-top: 1px solid var(--line);
}
.unit-row:first-child { border-top: 0; }
.unit-row-main { min-width: 0; }
.unit-row-title {
  display: inline-block;
  font-family: var(--font-serif);
  font-size: 1.05rem;
  color: var(--fg);
  line-height: 1.3;
  text-decoration: none;
}
a.unit-row-title:hover { text-decoration: underline; text-underline-offset: 3px; }
.unit-row-sub {
  font-size: 0.875rem;
  color: var(--muted);
  margin-top: 2px;
}
.unit-row-meta {
  font-size: 0.8125rem;
  color: var(--muted);
  margin-top: 2px;
}
.unit-row-note {
  font-size: 0.875rem;
  color: var(--muted);
  margin-top: 6px;
  line-height: 1.45;
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}
.unit-row-aside {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
}
.unit-row-edit {
  font-size: 0.875rem;
  color: var(--muted);
  text-decoration: none;
}
.unit-row-edit:hover { color: var(--fg); text-decoration: underline; text-underline-offset: 3px; }
.unit-row-delete {
  background: none;
  border: 0;
  padding: 0;
  font: inherit;
  font-size: 0.875rem;
  color: var(--muted);
  cursor: pointer;
}
.unit-row-delete:hover { color: var(--bad); text-decoration: underline; text-underline-offset: 3px; }
.unit-row-lease {
  font-size: 0.875rem;
  color: var(--fg);
  margin-top: 6px;
}

/* Unit show page */
.back-link {
  display: inline-block;
  color: var(--muted);
  text-decoration: none;
  font-size: 0.875rem;
  margin-bottom: var(--space-4);
}
.back-link:hover { color: var(--fg); }
.unit-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-4);
  margin-bottom: var(--space-5);
}
.unit-header h1 { margin: 0; }
.unit-header-actions {
  display: flex;
  gap: var(--space-2);
  flex-shrink: 0;
  align-items: flex-start;
}
.unit-notes { background: var(--surface-sunk); }
.unit-notes .label {
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: var(--space-2);
}
.unit-notes p { margin: 0; white-space: pre-wrap; }

/* Lease list */
.lease-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  overflow: hidden;
}
.lease-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-4) var(--space-5);
  border-top: 1px solid var(--line);
}
.lease-row:first-child { border-top: 0; }
.lease-row-past { opacity: 0.7; }
.lease-row-main { min-width: 0; }
.lease-row-title {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  color: var(--fg);
  line-height: 1.3;
}
.lease-row-email {
  font-family: var(--font-sans);
  color: var(--muted);
  font-size: 0.875rem;
  margin-left: 4px;
}
.lease-row-meta {
  font-size: 0.8125rem;
  color: var(--muted);
  margin-top: 4px;
}
.lease-row-note {
  font-size: 0.875rem;
  color: var(--muted);
  margin-top: 6px;
  line-height: 1.45;
}
.lease-row-note strong { color: var(--fg); font-weight: 500; }
.lease-row-aside {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
}

/* Form fieldsets */
.form-group {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: var(--space-4) var(--space-5);
  margin: 0;
}
.form-group legend {
  font-family: var(--font-serif);
  font-size: 0.95rem;
  color: var(--muted);
  padding: 0 var(--space-2);
}
.form-group .field:last-child { margin-bottom: 0; }

/* Chip group (button-style picker) */
.chip-group {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: 4px;
}
.chip-group-tight { margin-top: var(--space-2); }
.chip {
  display: inline-flex;
  align-items: center;
  padding: 6px 14px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  font: inherit;
  font-size: 0.875rem;
  background: var(--surface);
  color: var(--fg);
  cursor: pointer;
  user-select: none;
  transition: background 0.12s ease, color 0.12s ease, border-color 0.12s ease;
}
.chip:hover { background: var(--surface-sunk); }
.chip:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px rgba(20, 20, 20, 0.12);
}
.chip-selected,
.chip-selected:hover {
  background: var(--fg);
  color: var(--bg);
  border-color: var(--fg);
}

/* Lease → events timeline */
.lease-events {
  margin-top: var(--space-3);
  padding-top: var(--space-3);
  border-top: 1px dashed var(--line);
}
.timeline {
  list-style: none;
  margin: 0 0 var(--space-2);
  padding: 0;
}
.timeline-item {
  position: relative;
  padding: 0 0 var(--space-4) 0;
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
}
.timeline-item:last-child { padding-bottom: 0; }
.timeline-item::before {
  content: "";
  position: absolute;
  left: 9px;
  top: 22px;
  bottom: -2px;
  width: 1px;
  background: var(--line-strong);
}
.timeline-item:last-child::before { display: none; }
.timeline-content { flex: 1; min-width: 0; }
.timeline-date {
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--muted);
  line-height: 1.4;
}
.timeline-kind {
  font-weight: 500;
  font-size: 0.9375rem;
  color: var(--fg);
  margin-top: 1px;
}
.timeline-item-past .timeline-kind { color: var(--muted); }
.timeline-notes {
  font-size: 0.875rem;
  color: var(--muted);
  margin-top: 4px;
  line-height: 1.45;
}
.timeline-notes p { margin: 0 0 4px; }
.timeline-notes p:last-child { margin-bottom: 0; }
.timeline-edit {
  font-size: 0.8125rem;
  color: var(--muted);
  text-decoration: none;
  align-self: flex-start;
  margin-top: 4px;
  flex-shrink: 0;
}
.timeline-edit:hover { color: var(--fg); text-decoration: underline; text-underline-offset: 3px; }
.timeline-check-form { margin: 0; padding: 0; flex-shrink: 0; }
.timeline-check {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  border: 2px solid var(--muted-soft);
  background: var(--bg);
  color: var(--muted);
  font-size: 0.75rem;
  line-height: 1;
  cursor: pointer;
  padding: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  z-index: 1;
  position: relative;
}
.timeline-check:hover { border-color: var(--fg); color: var(--fg); }
.timeline-item-today .timeline-check { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.timeline-item-future .timeline-check { border-color: var(--fg); }
.timeline-item-done .timeline-check,
.timeline-item-done .timeline-check:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--bg);
  box-shadow: none;
}
.timeline-item.timeline-item-done { opacity: 0.6; }
.timeline-item-done .timeline-kind {
  text-decoration: line-through;
  text-decoration-color: var(--muted);
}
.timeline-done-tag {
  font-size: 0.6875rem;
  color: var(--accent);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.event-add {
  display: inline-block;
  margin-top: 4px;
  font-size: 0.8125rem;
  color: var(--muted);
  text-decoration: none;
}
.event-add:hover { color: var(--fg); text-decoration: underline; text-underline-offset: 3px; }

/* Upcoming feed (dashboard) */
.upcoming-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  overflow: hidden;
}
.upcoming-row {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-5);
  border-top: 1px solid var(--line);
}
.upcoming-row:first-child { border-top: 0; }
.upcoming-row-overdue { background: var(--bad-soft); }
.upcoming-check-form { margin: 0; padding: 0; flex-shrink: 0; }
.upcoming-check {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  border: 2px solid var(--line-strong);
  background: var(--surface);
  color: var(--muted);
  font-size: 0.75rem;
  cursor: pointer;
  padding: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.upcoming-check:hover { border-color: var(--accent); color: var(--accent); }
.upcoming-row-overdue .upcoming-check { border-color: var(--bad); color: var(--bad); }
.upcoming-main { flex: 1; min-width: 0; }
.upcoming-date {
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--muted);
}
.upcoming-row-overdue .upcoming-date { color: var(--bad); }
.upcoming-overdue-tag { font-weight: 500; }
.upcoming-kind {
  font-weight: 500;
  font-size: 0.9375rem;
  color: var(--fg);
  margin-top: 2px;
}
.upcoming-where {
  font-weight: 400;
  color: var(--muted);
  font-size: 0.875rem;
}
.upcoming-where a { color: var(--muted); text-decoration-color: var(--line-strong); }
.upcoming-where a:hover { color: var(--fg); text-decoration-color: var(--fg); }
.upcoming-edit {
  font-size: 0.8125rem;
  color: var(--muted);
  text-decoration: none;
  flex-shrink: 0;
}
.upcoming-edit:hover { color: var(--fg); text-decoration: underline; text-underline-offset: 3px; }

/* Demo banner */
.demo-banner {
  background: var(--accent-soft);
  color: #1f4a35;
  border-bottom: 1px solid #cfe0d6;
  font-size: 0.8125rem;
}
.demo-banner .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding: 8px var(--space-5);
}
.demo-banner-actions { display: flex; align-items: center; gap: var(--space-3); }
.demo-banner-link {
  color: #1f4a35;
  text-decoration: underline;
  text-decoration-color: #1f4a35;
  text-underline-offset: 3px;
}
.demo-banner-btn {
  background: transparent;
  border: 1px solid #1f4a35;
  color: #1f4a35;
  padding: 3px 10px;
  border-radius: var(--radius-sm);
  font: inherit;
  font-size: 0.75rem;
  cursor: pointer;
}
.demo-banner-btn:hover { background: #1f4a35; color: var(--bg); }
.timeline-check-static {
  cursor: default;
  pointer-events: none;
}

/* Account page */
.account-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}
@media (max-width: 720px) {
  .account-grid { grid-template-columns: 1fr; }
}
.account-grid h2 {
  font-size: 1.05rem;
  margin: 0 0 var(--space-4);
}
.info-list {
  margin: 0;
  display: grid;
  gap: var(--space-3);
}
.info-list > div {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: var(--space-3);
  align-items: baseline;
}
.info-list dt {
  font-size: 0.8125rem;
  color: var(--muted);
  letter-spacing: 0.02em;
  text-transform: uppercase;
  margin: 0;
}
.info-list dd {
  margin: 0;
  font-size: 0.9375rem;
}

/* Danger zone on edit pages */
.danger-zone {
  margin-top: var(--space-5);
  padding-top: var(--space-4);
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: flex-end;
}

/* Form helpers */
.field-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}
.form-actions {
  display: flex;
  justify-content: flex-end;
  gap: var(--space-3);
  margin-top: var(--space-5);
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 2px 10px;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  background: var(--info-soft);
  color: var(--info);
  border: 1px solid transparent;
}
.badge-active   { background: var(--accent-soft); color: #1f4a35; }
.badge-ending   { background: var(--warn-soft);   color: #7a3a07; }
.badge-moveout  { background: var(--bad-soft);    color: #7c1f1f; }
.badge-vacant   { background: var(--surface-sunk); color: var(--muted); }

/* Stack helper */
.stack > * + * { margin-top: var(--space-3); }
.stack-lg > * + * { margin-top: var(--space-5); }

/* Divider */
.divider {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin: var(--space-5) 0;
  color: var(--muted);
  font-size: 0.8125rem;
}
.divider::before, .divider::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--line);
}