/* ============================================================
   Design tokens — light theme (default) + dark theme overrides
   ============================================================ */
:root {
  --bg: #f4f5fb;
  --surface: #ffffff;
  --surface-muted: #f8f9fc;
  --border: #e7e9f5;
  --text: #1f2233;
  --text-muted: #6b7094;
  --accent: #6366f1;
  --accent-hover: #4f46e5;
  --accent-rgb: 99, 102, 241;
  --accent-contrast: #ffffff;
  --shadow-card: 0 1px 3px rgba(31, 34, 51, 0.06), 0 1px 2px rgba(31, 34, 51, 0.04);
  --shadow-hover: 0 6px 16px rgba(31, 34, 51, 0.10);
}

:root[data-bs-theme="dark"] {
  --bg: #14141f;
  --surface: #1b1b29;
  --surface-muted: #1e1e2c;
  --border: #2c2c3d;
  --text: #e7e8f5;
  --text-muted: #8b8ea8;
  --accent: #8183f4;
  --accent-hover: #6366f1;
  --accent-rgb: 129, 131, 244;
  --accent-contrast: #14141f;
  --shadow-card: 0 1px 3px rgba(0, 0, 0, 0.3), 0 1px 2px rgba(0, 0, 0, 0.2);
  --shadow-hover: 0 6px 20px rgba(0, 0, 0, 0.45);
}

/* ============================================================
   Re-theme Bootstrap's primary color family to the indigo accent,
   and point Bootstrap's body/border/secondary-text tokens at our
   own theme tokens. Each override below is declared ONCE (not
   duplicated per theme): --accent/--bg/--text/etc. are redefined
   per theme scope above, and a var() reference always resolves
   against the current element's cascaded custom-property value —
   not a static snapshot from where it's written — so a single
   declaration here stays correct in both themes.

   Verified against the actual shipped bootstrap@5.3.3/dist/css/
   bootstrap.css: most components read color from their OWN
   per-component custom property (e.g. .btn-primary's --bs-btn-bg
   is a literal hex, not derived from --bs-primary) rather than
   the root --bs-primary, so those components are overridden
   individually below rather than relying on the root override
   alone. .text-primary, .text-bg-primary (the pending badge),
   .link-primary and <a> links DO derive from --bs-primary(-rgb),
   so the root override is sufficient for those.
   ============================================================ */
:root {
  --bs-primary: var(--accent);
  --bs-primary-rgb: var(--accent-rgb);
  --bs-link-color: var(--accent);
  --bs-link-color-rgb: var(--accent-rgb);
  --bs-link-hover-color: var(--accent-hover);
  --bs-body-bg: var(--bg);
  --bs-body-color: var(--text);
  --bs-border-color: var(--border);
  --bs-secondary-color: var(--text-muted);
  --bs-body-font-family: 'Inter', var(--bs-font-sans-serif);
}

.btn-primary {
  --bs-btn-color: var(--accent-contrast);
  --bs-btn-bg: var(--accent);
  --bs-btn-border-color: var(--accent);
  --bs-btn-hover-color: var(--accent-contrast);
  --bs-btn-hover-bg: var(--accent-hover);
  --bs-btn-hover-border-color: var(--accent-hover);
  --bs-btn-active-color: var(--accent-contrast);
  --bs-btn-active-bg: var(--accent-hover);
  --bs-btn-active-border-color: var(--accent-hover);
  --bs-btn-focus-shadow-rgb: var(--accent-rgb);
}

.btn-outline-primary {
  --bs-btn-color: var(--accent);
  --bs-btn-border-color: var(--accent);
  --bs-btn-hover-bg: var(--accent);
  --bs-btn-hover-border-color: var(--accent);
  --bs-btn-active-bg: var(--accent);
  --bs-btn-active-border-color: var(--accent);
  --bs-btn-focus-shadow-rgb: var(--accent-rgb);
}

.form-control:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 0.25rem rgba(var(--accent-rgb), 0.25);
}

.form-check-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 0.25rem rgba(var(--accent-rgb), 0.25);
}

.form-check-input:checked {
  background-color: var(--accent);
  border-color: var(--accent);
}

.text-bg-primary {
  color: var(--accent-contrast) !important;
}

/* ============================================================
   Base
   ============================================================ */
body {
  min-height: 100vh;
}

.theme-toggle-btn {
  width: 34px;
  height: 34px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  border-radius: 50%;
}

/* ============================================================
   Dragula drag state
   ============================================================ */
.gu-mirror {
  position: fixed !important;
  z-index: 9999;
  margin: 0 !important;
  pointer-events: none;
  list-style: none;
  background-color: var(--surface);
  box-shadow: var(--shadow-hover);
  opacity: 0.95;
  border-radius: 12px;
}

.gu-transit {
  opacity: 0.3;
}

/* ============================================================
   Animations
   ============================================================ */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(-4px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in {
  animation: fadeIn 0.25s ease;
}

/* ============================================================
   Auth pages (login / register)
   ============================================================ */
.auth-body {
  background: linear-gradient(160deg, var(--bg) 0%, var(--surface) 100%);
}

.auth-card {
  border: none;
  border-radius: 16px;
  overflow: hidden;
  background-color: var(--surface);
  box-shadow: var(--shadow-hover);
}

.auth-card .alert {
  border: none;
  border-radius: 10px;
}

.auth-logo {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background-color: var(--accent);
  color: var(--accent-contrast);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin: 0 auto 0.75rem;
}

/* ============================================================
   Todo page — card + toolbar
   ============================================================ */
.todo-card {
  border: none;
  border-radius: 16px;
  overflow: hidden;
  background-color: var(--surface);
  box-shadow: var(--shadow-card);
}

.todo-card .card-header {
  background-color: var(--surface);
  border-bottom: 1px solid var(--border);
}

.todo-card .card-body {
  background-color: var(--surface);
}

/* ============================================================
   Todo page — task list (individual task cards)
   ============================================================ */
#todo-list-page {
  margin: 0;
  min-height: 40px;
}

.todo-item {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  box-shadow: var(--shadow-card);
  transition: background-color 0.2s ease, box-shadow 0.2s ease;
}

.todo-item:hover {
  box-shadow: var(--shadow-hover);
}

.todo-item.todo-completed {
  background-color: var(--surface-muted);
}

.todo-drag-handle {
  cursor: grab;
  display: inline-flex;
  align-items: center;
  color: var(--text-muted);
  opacity: 0.75;
  transition: opacity 0.15s ease;
}

.todo-item:hover .todo-drag-handle {
  opacity: 1;
}

.todo-drag-handle:active {
  cursor: grabbing;
}

.todo-text {
  word-break: break-word;
}

.todo-item .todo-toggle {
  cursor: pointer;
  flex-shrink: 0;
}

.todo-edit-btn,
.todo-delete-btn {
  border: none;
  background: transparent;
  color: var(--text-muted);
  opacity: 0.75;
  transition: opacity 0.15s ease, color 0.15s ease;
  padding: 0.15rem 0.4rem;
  line-height: 1;
}

.todo-item:hover .todo-edit-btn,
.todo-item:hover .todo-delete-btn,
.todo-edit-btn:focus-visible,
.todo-delete-btn:focus-visible {
  opacity: 1;
}

.todo-edit-btn:hover {
  color: var(--accent);
}

.todo-delete-btn:hover {
  color: var(--bs-danger);
}

.todo-edit-input {
  max-width: 100%;
}