/* ========================================
   Donelist — Semantic CSS
   Clean white with vibrant colour accents
   ======================================== */

/* --- Custom Properties --- */
:root {
  --color-white: #ffffff;
  --color-bg: #fafafa;
  --color-text: #1a1a2e;
  --color-text-muted: #6b7280;
  --color-border: #e5e7eb;
  --color-border-light: #f3f4f6;

  /* Accent — a warm coral/orange that pops on white */
  --color-primary: #f97316;
  --color-primary-hover: #ea580c;
  --color-primary-light: #fff7ed;
  --color-primary-subtle: #fed7aa;

  /* Secondary — soft teal for tags and secondary actions */
  --color-secondary: #0d9488;
  --color-secondary-hover: #0f766e;
  --color-secondary-light: #f0fdfa;

  /* Success green for checkmarks */
  --color-success: #22c55e;
  --color-success-light: #f0fdf4;

  /* Error */
  --color-error: #ef4444;
  --color-error-light: #fef2f2;

  /* Typography */
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: "SF Mono", "Cascadia Code", "Fira Mono", Consolas, monospace;

  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 2rem;

  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;

  /* Layout */
  --max-width: 42rem;
  --radius: 0.5rem;
  --radius-sm: 0.375rem;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.1), 0 1px 2px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07), 0 2px 4px rgba(0, 0, 0, 0.06);

  --transition: 150ms ease;
}

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

html {
  font-size: 100%;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* --- Skip Link (Accessibility) --- */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-4);
  background: var(--color-primary);
  color: var(--color-white);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-sm);
  font-weight: 600;
  z-index: 100;
  text-decoration: none;
}

.skip-link:focus {
  top: var(--space-4);
}

/* --- Screenreader Only --- */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* --- Header / Nav --- */
header {
  background: var(--color-white);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 50;
}

nav {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-3) var(--space-4);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}

.logo {
  font-size: var(--text-xl);
  font-weight: 800;
  text-decoration: none;
  color: var(--color-text);
  letter-spacing: -0.02em;
}

.logo::before {
  content: "\2713 ";
  color: var(--color-primary);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.nav-user {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  max-width: 12rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* --- Main Content --- */
main {
  flex: 1;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-6) var(--space-4);
  width: 100%;
}

/* --- Footer --- */
footer {
  border-top: 1px solid var(--color-border);
  text-align: center;
  padding: var(--space-6) var(--space-4);
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
  font-weight: 600;
  font-family: inherit;
  line-height: 1.4;
  border: 2px solid transparent;
  border-radius: var(--radius-sm);
  cursor: pointer;
  text-decoration: none;
  transition: background var(--transition), color var(--transition), border-color var(--transition), box-shadow var(--transition);
  white-space: nowrap;
}

.btn:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.btn--primary {
  background: var(--color-primary);
  color: var(--color-white);
}

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

.btn--secondary {
  background: var(--color-white);
  color: var(--color-text);
  border-color: var(--color-border);
}

.btn--secondary:hover {
  border-color: var(--color-text-muted);
}

.btn--text {
  background: none;
  color: var(--color-text-muted);
  padding: var(--space-1) var(--space-2);
  border: none;
}

.btn--text:hover {
  color: var(--color-text);
}

.btn--icon {
  background: none;
  border: none;
  padding: var(--space-1);
  color: var(--color-text-muted);
  border-radius: var(--radius-sm);
  cursor: pointer;
}

.btn--icon:hover {
  color: var(--color-error);
  background: var(--color-error-light);
}

.btn--small {
  padding: var(--space-1) var(--space-3);
  font-size: var(--text-xs);
}

.btn--full {
  width: 100%;
}

.btn--add {
  padding: var(--space-2) var(--space-6);
  font-size: var(--text-base);
}

.btn--filter {
  padding: var(--space-2) var(--space-3);
}

.btn--clear-filter {
  font-size: var(--text-xs);
  padding: var(--space-2) var(--space-2);
}

.inline-form {
  display: inline;
}

/* --- Forms --- */
.form-field {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.form-field label {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
}

.form-field input,
.form-field textarea,
.form-field select {
  font-family: inherit;
  font-size: var(--text-base);
  padding: var(--space-2) var(--space-3);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-white);
  color: var(--color-text);
  transition: border-color var(--transition), box-shadow var(--transition);
  width: 100%;
}

.form-field input:focus,
.form-field textarea:focus,
.form-field select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-subtle);
}

.form-field input::placeholder,
.form-field textarea::placeholder {
  color: var(--color-text-muted);
  opacity: 0.7;
}

.form-field .hint {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  font-weight: 400;
}

.required {
  color: var(--color-primary);
  margin-left: 2px;
}

/* --- Hero --- */
.hero {
  text-align: center;
  padding: var(--space-8) 0 var(--space-6);
}

.hero h1 {
  font-size: var(--text-3xl);
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--color-text);
  margin-bottom: var(--space-2);
}

.hero-subtitle {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  max-width: 28rem;
  margin: 0 auto;
}

/* --- Add Item Form --- */
.add-item {
  margin-bottom: var(--space-6);
}

.add-form {
  background: var(--color-white);
  border: 2px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space-4);
  box-shadow: var(--shadow-sm);
}

.form-row--main {
  display: flex;
  gap: var(--space-3);
  align-items: flex-end;
}

.form-field--title {
  flex: 1;
}

.form-row--details {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-top: var(--space-3);
}

.form-row--inline {
  display: flex;
  gap: var(--space-3);
}

.form-field--date {
  flex-shrink: 0;
}

.form-field--tags {
  flex: 1;
}

@media (max-width: 480px) {
  .form-row--inline {
    flex-direction: column;
  }
}

/* --- Tag Input Autocomplete --- */
.tag-input-wrap {
  position: relative;
}

.tag-suggestions {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: var(--color-white);
  border: 2px solid var(--color-border);
  border-top: none;
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
  max-height: 10rem;
  overflow-y: auto;
  z-index: 20;
  box-shadow: var(--shadow-md);
}

.tag-suggestion {
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-sm);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.tag-suggestion:hover,
.tag-suggestion[aria-selected="true"] {
  background: var(--color-bg);
}

.tag-suggestion__color {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

/* --- Filters --- */
.filters {
  margin-bottom: var(--space-6);
}

.filter-row {
  display: flex;
  gap: var(--space-3);

  flex-wrap: wrap;
}

.form-field--search {
  flex: 1;
  min-width: 8rem;
}

.form-field--tag-filter {
  min-width: 8rem;
}

/* --- Done List --- */
.done-list {
  margin-bottom: var(--space-12);
}

.date-group + .date-group {
  margin-top: var(--space-6);
}

.date-divider {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
}

.date-divider::before,
.date-divider::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--color-border);
}

.date-divider__text {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  white-space: nowrap;
}

.items-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.done-item {
  background: var(--color-white);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.done-item:hover {
  border-color: var(--color-border);
  box-shadow: var(--shadow-sm);
}

.done-item__content {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
}

.done-item__check {
  flex-shrink: 0;
  color: var(--color-success);
  margin-top: 2px;
}

.done-item__body {
  flex: 1;
  min-width: 0;
}

.done-item__title {
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.4;
}

.done-item__description {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-top: var(--space-1);
  line-height: 1.5;
}

.done-item__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1);
  margin-top: var(--space-2);
}

/* Tag colour palette — 10 distinct hues auto-assigned by tag name */
.tag {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: 600;
  padding: 2px var(--space-2);
  border-radius: 9999px;
  text-decoration: none;
  transition: background var(--transition), color var(--transition);
}

.tag--0  { background: #dbeafe; color: #1d4ed8; }
.tag--1  { background: #fce7f3; color: #be185d; }
.tag--2  { background: #d1fae5; color: #047857; }
.tag--3  { background: #fef3c7; color: #b45309; }
.tag--4  { background: #ede9fe; color: #6d28d9; }
.tag--5  { background: #ffedd5; color: #c2410c; }
.tag--6  { background: #cffafe; color: #0e7490; }
.tag--7  { background: #fae8ff; color: #a21caf; }
.tag--8  { background: #dcfce7; color: #15803d; }
.tag--9  { background: #fee2e2; color: #b91c1c; }

.tag:hover {
  filter: brightness(0.85);
}

.done-item__actions {
  flex-shrink: 0;
  opacity: 0;
  transition: opacity var(--transition);
}

.done-item:hover .done-item__actions,
.done-item:focus-within .done-item__actions {
  opacity: 1;
}

/* --- Empty State --- */
.empty-state {
  text-align: center;
  padding: var(--space-12) var(--space-4);
  color: var(--color-text-muted);
}

.empty-state__icon {
  font-size: 2.5rem;
  margin-bottom: var(--space-3);
}

.empty-state__text {
  font-size: var(--text-lg);
}

/* --- Auth Pages --- */
.auth-page {
  max-width: 24rem;
  margin: var(--space-12) auto;
  text-align: center;
}

.auth-page h1 {
  font-size: var(--text-2xl);
  font-weight: 800;
  margin-bottom: var(--space-2);
}

.auth-subtitle {
  color: var(--color-text-muted);
  margin-bottom: var(--space-6);
}

.auth-form {
  background: var(--color-white);
  border: 2px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  text-align: left;
  box-shadow: var(--shadow);
}

.auth-footer {
  margin-top: var(--space-4);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.auth-footer a {
  color: var(--color-primary);
  font-weight: 600;
  text-decoration: none;
}

.auth-footer a:hover {
  text-decoration: underline;
}

/* --- Alerts --- */
.alert {
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-sm);
  font-size: var(--text-sm);
  font-weight: 500;
  margin-bottom: var(--space-4);
}

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

/* --- Error Page --- */
.error-page {
  text-align: center;
  padding: var(--space-12) var(--space-4);
}

.error-page h1 {
  font-size: var(--text-2xl);
  margin-bottom: var(--space-3);
}

.error-page p {
  color: var(--color-text-muted);
  margin-bottom: var(--space-6);
}

/* --- Responsive --- */
@media (max-width: 480px) {
  .hero h1 {
    font-size: var(--text-2xl);
  }

  .form-row--main {
    flex-direction: column;
    align-items: stretch;
  }

  .btn--add {
    width: 100%;
  }

  .filter-row {
    flex-direction: column;
    align-items: center;
  }

  .nav-user {
    display: none;
  }

  .done-item__actions {
    opacity: 1;
  }
}

/* --- Summaries Section --- */
.summaries {
  margin-bottom: var(--space-6);
}

.summaries__heading {
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-4);
}

.summaries__loading {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  padding: var(--space-4);
  text-align: center;
}

.summaries__empty {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  text-align: center;
  padding: var(--space-4) 0;
}

.summaries__content {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.summary-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space-4);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.summary-card:hover {
  box-shadow: var(--shadow-sm);
}

.summary-card--upcoming {
  border-style: dashed;
  opacity: 0.8;
}

.summary-card__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  margin-bottom: var(--space-2);
}

.summary-card__title {
  font-size: var(--text-base);
  font-weight: 700;
  color: var(--color-text);
}

.summary-card__badge {
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-secondary);
  background: var(--color-secondary-light);
  padding: 2px var(--space-2);
  border-radius: 9999px;
}

.summary-card__body {
  font-size: var(--text-sm);
  color: var(--color-text);
  line-height: 1.6;
  margin-bottom: var(--space-2);
}

.summary-card__hint {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-bottom: var(--space-2);
}

.summary-card__blocked {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  font-style: italic;
}

.summary-card__generate {
  width: 100%;
}

.summary-card__regen {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  padding: 0;
}

.summary-card__regen:hover {
  color: var(--color-primary);
}

/* Progress bar for upcoming summaries */
.summary-card__progress {
  height: 4px;
  background: var(--color-border-light);
  border-radius: 2px;
  overflow: hidden;
  margin-top: var(--space-2);
}

.summary-card__progress-bar {
  height: 100%;
  background: var(--color-primary);
  border-radius: 2px;
  transition: width 300ms ease;
}

/* --- Print --- */
@media print {
  header, footer, .add-item, .filters, .summaries {
    display: none;
  }

  .done-item {
    border: none;
    box-shadow: none;
  }
}

/* --- Philosophy Page --- */
.philosophy-page {
  max-width: 40rem;
  margin: 0 auto;
  padding: var(--space-8) var(--space-4);
}

.philosophy-content {
  background: var(--color-white);
  border: 2px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space-8);
  box-shadow: var(--shadow);
}

.philosophy-content h1 {
  font-size: var(--text-3xl);
  font-weight: 800;
  color: var(--color-text);
  margin-bottom: var(--space-6);
  text-align: center;
}

.philosophy-content h2 {
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--color-text);
  margin-top: var(--space-8);
  margin-bottom: var(--space-4);
}

.philosophy-content h3 {
  font-size: var(--text-xl);
  font-weight: 600;
  color: var(--color-text);
  margin-top: var(--space-6);
  margin-bottom: var(--space-3);
}

.philosophy-content p {
  font-size: var(--text-base);
  line-height: 1.7;
  color: var(--color-text);
  margin-bottom: var(--space-4);
}

.philosophy-content p:last-child {
  margin-bottom: 0;
}

.philosophy-intro {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: var(--space-6);
}

.philosophy-intro p {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
}

.philosophy-quote {
  margin: var(--space-8) 0;
  padding: var(--space-6);
  background: var(--color-primary-light);
  border-left: 4px solid var(--color-primary);
  border-radius: var(--radius-sm);
}

.philosophy-quote blockquote {
  font-size: var(--text-lg);
  line-height: 1.8;
  color: var(--color-text);
  font-style: italic;
  quotes: """ """ "'" "'";
}

.philosophy-quote blockquote::before {
  content: open-quote;
  font-size: 3rem;
  line-height: 0;
  vertical-align: -0.4em;
  color: var(--color-primary);
  margin-right: var(--space-2);
}

.philosophy-quote blockquote p {
  display: inline;
  margin: 0;
}

.philosophy-quote blockquote p + p {
  display: block;
  margin-top: var(--space-4);
}

.philosophy-back {
  text-align: center;
  margin-top: var(--space-8);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-border);
}

.philosophy-link {
  color: var(--color-primary);
  text-decoration: none;
  font-weight: 600;
  transition: color var(--transition);
}

.philosophy-link:hover {
  color: var(--color-primary-hover);
  text-decoration: underline;
}

@media (max-width: 480px) {
  .philosophy-content {
    padding: var(--space-6) var(--space-4);
  }

  .philosophy-content h1 {
    font-size: var(--text-2xl);
  }

  .philosophy-content h2 {
    font-size: var(--text-xl);
  }

  .philosophy-intro,
  .philosophy-quote blockquote {
    font-size: var(--text-base);
  }

  .philosophy-quote blockquote::before {
    font-size: 2rem;
  }
}

/* --- Philosophy Page --- */
.philosophy-page {
  max-width: 40rem;
  margin: 0 auto;
  padding: var(--space-8) var(--space-4);
}

.philosophy-content {
  background: var(--color-white);
  border: 2px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space-8);
  box-shadow: var(--shadow);
}

.philosophy-content h1 {
  font-size: var(--text-3xl);
  font-weight: 800;
  color: var(--color-text);
  margin-bottom: var(--space-6);
  text-align: center;
}

.philosophy-content h2 {
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--color-text);
  margin-top: var(--space-8);
  margin-bottom: var(--space-4);
}

.philosophy-content h3 {
  font-size: var(--text-xl);
  font-weight: 600;
  color: var(--color-text);
  margin-top: var(--space-6);
  margin-bottom: var(--space-3);
}

.philosophy-content p {
  font-size: var(--text-base);
  line-height: 1.7;
  color: var(--color-text);
  margin-bottom: var(--space-4);
}

.philosophy-content p:last-child {
  margin-bottom: 0;
}

.philosophy-intro {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: var(--space-6);
}

.philosophy-intro p {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
}

.philosophy-quote {
  margin: var(--space-8) 0;
  padding: var(--space-6);
  background: var(--color-primary-light);
  border-left: 4px solid var(--color-primary);
  border-radius: var(--radius-sm);
}

.philosophy-quote blockquote {
  font-size: var(--text-lg);
  line-height: 1.8;
  color: var(--color-text);
  font-style: italic;
  quotes: """ """ "'" "'";
}

.philosophy-quote blockquote::before {
  content: open-quote;
  font-size: 3rem;
  line-height: 0;
  vertical-align: -0.4em;
  color: var(--color-primary);
  margin-right: var(--space-2);
}

.philosophy-quote blockquote p {
  display: inline;
  margin: 0;
}

.philosophy-quote blockquote p + p {
  display: block;
  margin-top: var(--space-4);
}

.philosophy-back {
  text-align: center;
  margin-top: var(--space-8);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-border);
}

.philosophy-link {
  color: var(--color-primary);
  text-decoration: none;
  font-weight: 600;
  transition: color var(--transition);
}

.philosophy-link:hover {
  color: var(--color-primary-hover);
  text-decoration: underline;
}

@media (max-width: 480px) {
  .philosophy-content {
    padding: var(--space-6) var(--space-4);
  }

  .philosophy-content h1 {
    font-size: var(--text-2xl);
  }

  .philosophy-content h2 {
    font-size: var(--text-xl);
  }

  .philosophy-intro,
  .philosophy-quote blockquote {
    font-size: var(--text-base);
  }

  .philosophy-quote blockquote::before {
    font-size: 2rem;
  }
}

/* --- Philosophy Buy Buttons --- */
.philosophy-buy {
  text-align: center;
  margin-top: var(--space-6);
  padding-top: var(--space-6);
}

.philosophy-buy__text {
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-4);
}

.philosophy-buy__buttons {
  display: flex;
  gap: var(--space-3);
  justify-content: center;
  flex-wrap: wrap;
}

@media (max-width: 480px) {
  .philosophy-buy__buttons {
    flex-direction: column;
    align-items: stretch;
  }
}