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

:root {
  --color-bg: #faf8f5;
  --color-surface: #ffffff;
  --color-text: #2d2a26;
  --color-text-muted: #8a8480;
  --color-primary: #c06830;
  --color-primary-hover: #a85828;
  --color-primary-light: #fdf0e8;
  --color-border: #e8e4df;
  --color-success: #3a8a5c;
  --color-success-light: #edf7f0;
  --color-error: #c4403a;
  --color-error-light: #fdf0ef;
  --color-people: #2563eb;
  --color-people-hover: #1d4ed8;
  --color-interactions: #059669;
  --color-interactions-hover: #047857;
  --color-todos: #a855f7;
  --color-todos-hover: #9333ea;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 1px 3px rgba(45, 42, 38, 0.06), 0 1px 2px rgba(45, 42, 38, 0.04);
  --shadow-md: 0 4px 12px rgba(45, 42, 38, 0.08), 0 2px 4px rgba(45, 42, 38, 0.04);
  --max-width: 860px;
}

html {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

body {
  min-height: 100dvh;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color 0.15s;
}

a:hover {
  color: var(--color-primary-hover);
  text-decoration: underline;
}

/* ── Header ──────────────────────────────────────────────── */
.header {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: 0.75rem 1.5rem;
  position: sticky;
  top: 0;
  z-index: 10;
}

.header .content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--max-width);
  margin: 0 auto;
}

.header .logo img {
  height: 32px;
  display: block;
}

.header .signin {
  display: flex;
  align-items: center;
  gap: 1rem;
  font-size: 0.875rem;
}

.header .signin a {
  color: var(--color-text-muted);
}

.header .signin a:hover {
  color: var(--color-primary);
  text-decoration: none;
}

/* ── Main Content ────────────────────────────────────────── */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2rem 1.5rem;
}

/* ── Typography ──────────────────────────────────────────── */
h1 {
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  letter-spacing: -0.02em;
}

h2 {
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 0.25rem;
  color: var(--color-text);
  letter-spacing: -0.01em;
}

.subtitle {
  color: var(--color-text-muted);
  font-size: 0.875rem;
  margin-bottom: 0.75rem;
}

.last-seen {
  color: var(--color-text-muted);
  font-size: 0.85rem;
  text-align: right;
  white-space: nowrap;
}

.interaction-kind {
  display: inline-block;
  background: var(--color-primary-light, #f5ebe4);
  color: var(--color-primary);
  font-size: 0.65rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  padding: 0.15em 0.45em;
  border-radius: var(--radius-sm);
  margin-right: 0.35em;
  vertical-align: baseline;
}

/* ── Navigation Links (Home) ─────────────────────────────── */
.nav-links {
  display: flex;
  gap: 1.25rem;
  margin-bottom: 2rem;
}

.nav-group {
  display: flex;
  gap: 0.35rem;
}

.nav-group-right {
  margin-left: auto;
}

.nav-links a,
.nav-links button,
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1.15rem;
  background: var(--color-primary);
  color: #fff;
  border: none;
  border-radius: var(--radius);
  font-family: inherit;
  font-size: 0.875rem;
  font-weight: 500;
  text-decoration: none;
  cursor: pointer;
  transition: background 0.15s, transform 0.1s;
}

.nav-links a:hover,
.nav-links button:hover,
.btn:hover {
  background: var(--color-primary-hover);
  text-decoration: none;
  transform: translateY(-1px);
}

.nav-links a.people,
.btn.people {
  background: var(--color-people);
}
.nav-links a.people:hover,
.btn.people:hover {
  background: var(--color-people-hover);
}

.nav-links a.interactions,
.btn.interactions {
  background: var(--color-interactions);
}
.nav-links a.interactions:hover,
.btn.interactions:hover {
  background: var(--color-interactions-hover);
}

.nav-links a.todos,
.nav-links button.todos,
.btn.todos {
  background: var(--color-todos);
}
.nav-links a.todos:hover,
.nav-links button.todos:hover,
.btn.todos:hover {
  background: var(--color-todos-hover);
}

.nav-links button.notifications,
.btn.notifications {
  background: #6b7280;
}
.nav-links button.notifications:hover,
.btn.notifications:hover {
  background: #4b5563;
}

.nav-links button:disabled {
  opacity: 0.6;
  cursor: default;
  transform: none;
}

.btn-secondary {
  background: var(--color-surface);
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

.btn-secondary:hover {
  background: var(--color-bg);
}

.btn-danger {
  background: var(--color-error);
}

.btn-danger:hover {
  background: #a83632;
}

/* ── Home Grid ───────────────────────────────────────────── */
.container:has(.home-grid) {
  max-width: 1400px;
}

.home-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.home-grid .section-card + .section-card {
  margin-top: 0;
}

/* ── Section Cards (Homepage) ────────────────────────────── */
.section-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-top: 3px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
  box-shadow: var(--shadow);
}

.section-card + .section-card {
  margin-top: 1.5rem;
}

.section-card.people {
  border-top-color: var(--color-people);
}
.section-card.people a {
  color: var(--color-people);
}
.section-card.people a:hover {
  color: var(--color-people-hover);
}

.section-card.interactions {
  border-top-color: var(--color-interactions);
}
.section-card.interactions a {
  color: var(--color-interactions);
}
.section-card.interactions a:hover {
  color: var(--color-interactions-hover);
}

.section-card.todos {
  border-top-color: var(--color-todos);
}
.section-card.todos a {
  color: var(--color-todos);
}
.section-card.todos a:hover {
  color: var(--color-todos-hover);
}

.section-card h2 {
  margin-bottom: 0.2rem;
}

.section-card .subtitle {
  margin-bottom: 1rem;
}

.section-card .people {
  gap: 0;
}

.section-card .scrollable-list {
  max-height: calc(5 * 2.9rem);
  overflow-y: auto;
}

.section-card .people .person {
  background: transparent;
  border: none;
  border-radius: 0;
  border-bottom: 1px solid var(--color-border);
  box-shadow: none;
  padding: 0.65rem 0.5rem;
}

.section-card .people .person:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.section-card .people .person:first-child {
  padding-top: 0;
}

.section-card .people .person:hover {
  background: var(--color-primary-light);
  box-shadow: none;
  border-radius: var(--radius-sm);
  margin: 0 -0.5rem;
  padding-left: 1rem;
  padding-right: 1rem;
}

/* ── Cards ───────────────────────────────────────────────── */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
  box-shadow: var(--shadow);
}

/* ── Lists (People, Interactions, Todos) ─────────────────── */
.interactions,
.people,
.todos {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.interactions .interaction,
.people .person,
.todos .todo {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.75rem 1rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  transition: box-shadow 0.15s, background 0.15s;
}

.interactions .interaction:hover,
.people .person:hover,
.todos .todo:hover {
  box-shadow: var(--shadow-md);
}

.interactions .interaction div,
.people .person div,
.todos .todo div {
  padding-right: 0;
}

.col {
  flex: 1;
  min-width: 0;
}

/* ── Todo Styles ─────────────────────────────────────────── */
.todo-due-date {
  color: var(--color-text-muted);
  font-size: 0.85rem;
}

.todo-due-date.overdue {
  color: var(--color-error);
  font-weight: 500;
}

.todo-people {
  color: var(--color-text-muted);
  font-size: 0.85rem;
}

.todo-meta {
  color: var(--color-text-muted);
  font-size: 0.85rem;
  text-align: right;
  white-space: nowrap;
}

.todo-people-names {
  margin-left: 0.5rem;
}

.todos .todo.completed {
  opacity: 0.5;
}

.section-card .todos {
  gap: 0;
}

.section-card .todos .todo {
  background: transparent;
  border: none;
  border-radius: 0;
  border-bottom: 1px solid var(--color-border);
  box-shadow: none;
  padding: 0.65rem 0.5rem;
}

.section-card .todos .todo:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.section-card .todos .todo:first-child {
  padding-top: 0;
}

.section-card .todos .todo:hover {
  background: var(--color-primary-light);
  box-shadow: none;
  border-radius: var(--radius-sm);
  margin: 0 -0.5rem;
  padding-left: 1rem;
  padding-right: 1rem;
}

/* ── Done Button ─────────────────────────────────────────── */
.col-auto {
  flex: none;
}

.btn-done,
.btn-done[type="submit"] {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.6rem;
  background: var(--color-success);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 0.75rem;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.15s, transform 0.1s;
}

.btn-done:hover,
.btn-done[type="submit"]:hover {
  background: #2e7049;
  transform: translateY(-1px);
}

.section-card .btn-done,
.section-card .btn-done[type="submit"] {
  background: var(--color-success);
}

.section-card .btn-done:hover,
.section-card .btn-done[type="submit"]:hover {
  background: #2e7049;
}

.actions .btn-done,
.actions .btn-done[type="submit"] {
  background: var(--color-success);
  font-size: 0.8125rem;
  padding: 0.4rem 0.75rem;
}

.actions .btn-done:hover,
.actions .btn-done[type="submit"]:hover {
  background: #2e7049;
}

/* ── Detail Views ────────────────────────────────────────── */
.detail-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: var(--shadow);
  margin-bottom: 1.5rem;
}

.detail-card p {
  margin-bottom: 0.75rem;
  line-height: 1.7;
}

.detail-card strong {
  display: inline-block;
  min-width: 100px;
  color: var(--color-text-muted);
  font-weight: 500;
  font-size: 0.8125rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.detail-card ul {
  list-style: none;
  padding: 0;
  margin-top: 0.25rem;
}

.detail-card ul li {
  padding: 0.25rem 0;
}

.actions {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-top: 1rem;
}

.actions a {
  font-size: 0.875rem;
}

/* ── Forms ────────────────────────────────────────────────── */
form {
  max-width: 480px;
}

.form-group {
  margin-bottom: 1.25rem;
}

label,
.form-group label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-muted);
  margin-bottom: 0.35rem;
}

input[type="text"],
input[type="email"],
input[type="password"],
input[type="date"],
input[type="datetime-local"],
textarea,
select {
  width: 100%;
  padding: 0.55rem 0.85rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 0.9375rem;
  line-height: 1.5;
  color: var(--color-text);
  background: var(--color-surface);
  transition: border-color 0.15s, box-shadow 0.15s;
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="password"]:focus,
input[type="date"]:focus,
input[type="datetime-local"]:focus,
textarea:focus,
select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(192, 104, 48, 0.12);
}

textarea {
  min-height: 120px;
  resize: vertical;
}

select[multiple] {
  min-height: 140px;
}

select:not([multiple]) {
  height: auto;
}

input[type="submit"],
button[type="submit"] {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 1.25rem;
  background: var(--color-primary);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 0.9375rem;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.15s, transform 0.1s;
}

input[type="submit"]:hover,
button[type="submit"]:hover {
  background: var(--color-primary-hover);
  transform: translateY(-1px);
}

/* Sign out button in header */
.header button[type="submit"] {
  background: none;
  color: var(--color-text-muted);
  padding: 0;
  font-size: 0.875rem;
  border: none;
  transform: none;
}

.header button[type="submit"]:hover {
  color: var(--color-primary);
  background: none;
  transform: none;
}

/* Destroy buttons */
.actions form:has(.btn-destroy) {
  margin-left: auto;
}

.actions .btn-destroy,
.actions .btn-destroy[type="submit"] {
  background: none;
  color: var(--color-text-muted);
  font-size: 0.875rem;
  font-weight: normal;
  padding: 0;
  border: none;
  transform: none;
}

.actions .btn-destroy:hover,
.actions .btn-destroy[type="submit"]:hover {
  background: none;
  color: var(--color-error);
  transform: none;
  text-decoration: underline;
}

/* ── Inline Forms ────────────────────────────────────────── */
.inline-form {
  display: inline;
  max-width: none;
}

/* ── Checkbox Labels ─────────────────────────────────────── */
.checkbox-label {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
  font-size: 0.9375rem;
  color: var(--color-text);
}

.checkbox-label input[type="checkbox"] {
  width: auto;
}

/* ── People Toggle Buttons (Interaction Form) ────────────── */
.people-toggle-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.people-toggle-btn {
  display: inline-flex;
  align-items: center;
  padding: 0.45rem 0.85rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text);
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s, color 0.15s;
  user-select: none;
}

.people-toggle-btn:hover {
  border-color: var(--color-primary);
  background: var(--color-primary-light);
}

.people-toggle-btn.selected {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
}

.people-toggle-btn.selected:hover {
  background: var(--color-primary-hover);
  border-color: var(--color-primary-hover);
}

.people-toggle-btn input[type="checkbox"],
.people-toggle-btn input[type="radio"] {
  display: none;
}

/* ── Time Picker (Interaction Form) ──────────────────────── */
.time-picker-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}

.time-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 2.5rem;
  padding: 0.4rem 0.6rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--color-text);
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s, color 0.15s;
}

.time-btn:hover {
  border-color: var(--color-primary);
  background: var(--color-primary-light);
}

.time-btn.selected {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
}

.time-btn.selected:hover {
  background: var(--color-primary-hover);
  border-color: var(--color-primary-hover);
}

.mt-label {
  display: block;
  margin-top: 0.75rem;
  margin-bottom: 0.35rem;
}

/* ── Flash Messages ──────────────────────────────────────── */
.flash-messages {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.flash {
  padding: 0.75rem 1rem;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 500;
  margin-top: 1rem;
}

.flash.notice {
  background: var(--color-success-light);
  color: var(--color-success);
  border: 1px solid #b6dbc4;
}

.flash.alert {
  background: var(--color-error-light);
  color: var(--color-error);
  border: 1px solid #f0c4c2;
}

/* ── Form Errors ─────────────────────────────────────────── */
.form-errors {
  background: var(--color-error-light);
  color: var(--color-error);
  border: 1px solid #f0c4c2;
  border-radius: var(--radius-sm);
  padding: 1rem 1.25rem;
  margin-bottom: 1.5rem;
  font-size: 0.875rem;
}

.form-errors h2 {
  font-size: 0.9375rem;
  color: var(--color-error);
  margin-bottom: 0.5rem;
}

.form-errors ul {
  padding-left: 1.25rem;
  margin: 0;
}

.form-errors li {
  margin-bottom: 0.25rem;
}

/* ── Auth Pages ──────────────────────────────────────────── */
fieldset {
  border: none;
  padding: 0;
}

fieldset table {
  width: 100%;
  border-collapse: collapse;
}

fieldset th {
  text-align: left;
  font-weight: 500;
  font-size: 0.875rem;
  color: var(--color-text-muted);
  padding: 0.5rem 1rem 0.5rem 0;
  white-space: nowrap;
}

fieldset td {
  padding: 0.5rem 0;
  width: 100%;
}

fieldset td input[type="email"],
fieldset td input[type="password"] {
  width: 100%;
}

section {
  margin-top: 1.25rem;
}

/* ── Utilities ───────────────────────────────────────────── */
.mt-2 {
  margin-top: 1.5rem;
}

hr {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: 1.5rem 0;
}

/* ── Responsive ──────────────────────────────────────────── */
@media (max-width: 1024px) {
  .home-grid {
    grid-template-columns: 1fr;
  }

  .home-grid .section-card + .section-card {
    margin-top: 1.5rem;
  }
}

@media (max-width: 600px) {
  .interactions .interaction,
  .people .person,
  .todos .todo {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.25rem;
  }

  .section-card .people .person:hover,
  .section-card .todos .todo:hover {
    margin: 0;
    padding-left: 0.5rem;
    padding-right: 0.5rem;
  }

  .todo-meta {
    text-align: left;
  }

  .last-seen {
    text-align: left;
  }

  form {
    max-width: 100%;
  }

  h1 {
    font-size: 1.5rem;
  }
}