/* =========================================================
   Steuer Checkliste — Stylesheet
   Design language: Apple / Notion / Stripe / Linear inspired
   ========================================================= */

/* ---------- Design Tokens ---------- */
:root {
  --color-bg: #F8F9FA;
  --color-primary: #111111;
  --color-brand: #004B87;
  --color-accent-red: #D32F2F;
  --color-accent-gold: #EAB308;
  --color-success: #22C55E;
  --color-border: #E5E7EB;
  --color-card: #FFFFFF;

  --color-text: #111111;
  --color-text-muted: #6B7280;
  --color-text-subtle: #9CA3AF;

  --radius-card: 18px;
  --radius-btn: 14px;
  --radius-sm: 10px;

  --shadow-sm: 0 1px 2px rgba(17, 17, 17, 0.04), 0 1px 1px rgba(17, 17, 17, 0.03);
  --shadow-md: 0 4px 16px rgba(17, 17, 17, 0.06), 0 1px 2px rgba(17, 17, 17, 0.04);
  --shadow-lg: 0 12px 32px rgba(17, 17, 17, 0.10), 0 2px 6px rgba(17, 17, 17, 0.05);

  --font-body: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --font-heading: 'Montserrat', sans-serif;

  --max-width: 900px;

  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 400ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  background-color: var(--color-bg);
  color: var(--color-text);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, p, ul, textarea { margin: 0; }

h1, h2, h3, .btn, .category-card__title, .progress-ring__percent {
  font-family: var(--font-heading);
}

button {
  font-family: inherit;
  cursor: pointer;
}

textarea {
  font-family: inherit;
}

img, svg { display: block; }

.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  top: -48px;
  left: 12px;
  background: var(--color-primary);
  color: var(--color-bg);
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  z-index: 1000;
  transition: top var(--transition-fast);
  text-decoration: none;
  font-weight: 600;
}
.skip-link:focus { top: 12px; }

a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
[tabindex]:focus-visible {
  outline: 2px solid var(--color-brand);
  outline-offset: 2px;
  border-radius: 6px;
}

/* ---------- Layout ---------- */
.page-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px 80px;
}

/* ---------- Search Bar ---------- */
.searchbar {
  max-width: 100%;
  margin: 0 0 24px 0;
}
.searchbar__inner {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-btn);
  padding: 12px 16px;
  box-shadow: var(--shadow-sm);
}
.searchbar__icon { width: 18px; height: 18px; color: var(--color-text-subtle); flex-shrink: 0; }
.searchbar__input {
  border: none;
  outline: none;
  background: transparent;
  flex: 1;
  font-size: 0.95rem;
  color: var(--color-text);
}
.searchbar__input::placeholder { color: var(--color-text-subtle); }
.searchbar__clear {
  border: none;
  background: transparent;
  color: var(--color-text-subtle);
  display: flex;
  padding: 2px;
}
.searchbar__count {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-top: 8px;
  padding-left: 2px;
}

/* ---------- Hero ---------- */
.hero {
  text-align: center;
  padding: 30px 20px 48px;
}
.hero__inner {
  max-width: 640px;
  margin: 0 auto;
}
.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-brand);
  background: color-mix(in srgb, var(--color-brand) 8%, transparent);
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 20px;
  letter-spacing: 0.01em;
}
.hero__title {
  font-size: clamp(2.25rem, 5vw, 3.25rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: 16px;
}
.hero__subtitle {
  font-size: 1.125rem;
  color: var(--color-text-muted);
  line-height: 1.6;
   margin-bottom:25px;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: var(--radius-btn);
  font-size: 0.9rem;
  font-weight: 600;
  border: 1px solid transparent;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast), border-color var(--transition-fast), opacity var(--transition-fast);
  position: relative;
  overflow: hidden;
  white-space: nowrap;
}
.btn svg { width: 16px; height: 16px; }
.btn:active { transform: scale(0.97); }

.btn--primary {
  background: var(--color-brand);
  color: #fff;
  box-shadow: var(--shadow-md);
}
.btn--primary:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); }

.btn--ghost {
  background: var(--color-card);
  color: var(--color-text);
  border-color: var(--color-border);
}
.btn--ghost:hover { border-color: var(--color-primary); transform: translateY(-1px); }

.btn--outline {
  background: #fff;
  color: #000;
  border-color: var(--color-brand);
}
.btn--outline:hover {
  background: var(--color-brand);
  color: #fff;
  transform: translateY(-1px);
}

.btn--danger {
  background: #fff;
  color: var(--color-accent-red);
  border-color: var(--color-accent-red);
}
.btn--danger:hover {
  background: var(--color-accent-red);
  color: #fff;
  transform: translateY(-1px);
}

.btn--danger-solid {
  background: var(--color-accent-red);
  color: #fff;
}
.btn--danger-solid:hover { opacity: 0.9; transform: translateY(-1px); }

.btn .ripple {
  position: absolute;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.5);
  transform: scale(0);
  animation: ripple 550ms ease-out;
  pointer-events: none;
}
@keyframes ripple {
  to { transform: scale(3); opacity: 0; }
}

/* ---------- Progress Card ---------- */
.progress-card {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-md);
  padding: 32px;
  margin-top: -56px;
  display: flex;
  align-items: center;
  gap: 32px;
  flex-wrap: wrap;
  position: relative;
  z-index: 2;
}

.progress-card__ring-wrap {
  position: relative;
  width: 132px;
  height: 132px;
  flex-shrink: 0;
}
.progress-ring { transform: rotate(-90deg); }
.progress-ring__bg {
  fill: none;
  stroke: var(--color-border);
  stroke-width: 10;
}
.progress-ring__value {
  fill: none;
  stroke: var(--color-brand);
  stroke-width: 10;
  stroke-linecap: round;
  stroke-dasharray: 364.42;
  stroke-dashoffset: 364.42;
  transition: stroke-dashoffset var(--transition-slow), stroke var(--transition-base);
}
.progress-ring__label {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}
.progress-ring__percent {
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.progress-card__details { flex: 1; min-width: 220px; }
.progress-card__heading-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 4px;
}
.progress-card__heading {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 0;
}
.sticky-toggle-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  flex-shrink: 0;
  border-radius: 50%;
  border: 1px solid var(--color-border);
  background: var(--color-card);
  color: var(--color-text-subtle);
  transition: background var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast);
}
.sticky-toggle-btn svg { width: 14px; height: 14px; }
.sticky-toggle-btn:hover { border-color: var(--color-brand); color: var(--color-brand); transform: translateY(-1px); }
.sticky-toggle-btn[aria-pressed="true"] { background: var(--color-brand); color: #fff; border-color: var(--color-brand); }

@media (min-width: 860px) {
  .progress-card.is-sticky-active {
    position: sticky;
    top: 78px;
  }
}

@media (max-width: 640px) {
  .sticky-toggle-btn { display: none; }
}

.progress-card__summary {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  margin-bottom: 16px;
}

.progress-bar {
  height: 8px;
  background: var(--color-border);
  border-radius: 999px;
  overflow: hidden;
  margin-bottom: 18px;
}
.progress-bar__fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--color-accent-gold), var(--color-brand));
  border-radius: 999px;
  transition: width var(--transition-slow);
}

.progress-card__stats {
  display: flex;
  gap: 28px;
}
.stat { display: flex; flex-direction: column; gap: 2px; }
.stat__value { font-size: 1.1rem; font-weight: 700; }
.stat__label { font-size: 0.78rem; color: #000; text-transform: uppercase; letter-spacing: 0.04em; }
.stat__icon { display: none; width: 16px; height: 16px; flex-shrink: 0; }
.stat__icon--success { color: var(--color-success); }
.stat__icon--gold { color: var(--color-accent-gold); }
.stat__icon--brand { color: var(--color-brand); }

.progress-card__eta {
  margin-top: 14px;
  font-size: 1.0rem;
  color: #000;
}

/* ---------- Toolbar ---------- */
.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 28px 0 20px;
}

/* ---------- Checklist ---------- */
.checklist {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.category-card {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: box-shadow var(--transition-base), border-color var(--transition-base);
  animation: fadeIn 400ms ease both;
}
.category-card:hover { box-shadow: var(--shadow-md); }

.category-card__header {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 20px 22px;
  background: transparent;
  border: none;
  color: var(--color-text);
  text-align: left;
}

.category-card__icon {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: color-mix(in srgb, var(--color-accent-gold) 16%, transparent);
  color: var(--color-primary);
  flex-shrink: 0;
}
.category-card__icon svg { width: 20px; height: 20px; }

.category-card__heading { flex: 1; min-width: 0; }
.category-card__title {
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}
.category-card__meta {
  font-size: 0.8rem;
  color: var(--color-text-subtle);
  margin-top: 2px;
}

.category-card__badge {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-success);
  background: color-mix(in srgb, var(--color-success) 12%, transparent);
  padding: 4px 10px;
  border-radius: 999px;
  white-space: nowrap;
  flex-shrink: 0;
}
.category-card__badge[data-state="empty"] {
  color: var(--color-text-subtle);
  background: var(--color-bg);
}

.category-card__chevron {
  width: 18px;
  height: 18px;
  color: var(--color-text-subtle);
  transition: transform var(--transition-base);
  flex-shrink: 0;
}
.category-card.is-open .category-card__chevron { transform: rotate(180deg); }

.category-card__body {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows var(--transition-base);
}
.category-card.is-open .category-card__body {
  grid-template-rows: 1fr;
}
.category-card__body-inner {
  overflow: hidden;
}

.task-list {
  list-style: none;
  padding: 0 22px 20px;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.task-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 10px 8px;
  border-radius: var(--radius-sm);
  transition: background var(--transition-fast);
}
.task-item:hover { background: var(--color-bg); }
.task-item.is-hidden { display: none; }
.task-item mark {
  background: color-mix(in srgb, var(--color-accent-gold) 45%, transparent);
  color: inherit;
  border-radius: 3px;
  padding: 0 1px;
}

.task-checkbox {
  position: relative;
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  margin-top: 1px;
}
.task-checkbox input {
  position: absolute;
  inset: 0;
  opacity: 0;
  margin: 0;
  cursor: pointer;
}
.task-checkbox__box {
  width: 24px;
  height: 24px;
  border: 2px solid var(--color-border);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: border-color var(--transition-fast), background var(--transition-fast), transform 180ms cubic-bezier(0.34, 1.56, 0.64, 1);
  pointer-events: none;
}
.task-checkbox__box svg {
  width: 15px;
  height: 15px;
  color: #fff;
  opacity: 0;
  transform: scale(0.5);
  transition: opacity 150ms ease, transform 150ms cubic-bezier(0.34, 1.56, 0.64, 1);
}
.task-checkbox input:checked + .task-checkbox__box {
  background: var(--color-success);
  border-color: var(--color-success);
  transform: scale(1.05);
}
.task-checkbox input:checked + .task-checkbox__box svg {
  opacity: 1;
  transform: scale(1);
}
.task-checkbox input:focus-visible + .task-checkbox__box {
  outline: 2px solid var(--color-brand);
  outline-offset: 2px;
}
.task-checkbox input:hover + .task-checkbox__box { border-color: var(--color-primary); }

.task-item__label {
  flex: 1;
  font-size: 0.92rem;
  cursor: pointer;
  padding-top: 2px;
  transition: color var(--transition-fast), text-decoration-color var(--transition-fast);
}
.task-checkbox input:checked ~ .task-item__label {
  color: var(--color-text-subtle);
  text-decoration: line-through;
  text-decoration-color: var(--color-text-subtle);
}

.no-results {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 40px 0;
  color: var(--color-text-subtle);
  font-size: 0.9rem;
}
.no-results svg { width: 18px; height: 18px; }

/* ---------- Notes Card ---------- */
.notes-card {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-sm);
  padding: 24px;
  margin-top: 24px;
}
.notes-card__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
  flex-wrap: wrap;
}
.notes-card__header h2 {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 1rem;
  font-weight: 600;
}
.notes-card__header h2 svg { width: 18px; height: 18px; color: var(--color-accent-gold); }
.notes-card__timestamp {
  font-size: 0.78rem;
  color: var(--color-text-subtle);
}
.notes-card__textarea {
  width: 100%;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-bg);
  color: var(--color-text);
  padding: 14px;
  font-size: 0.92rem;
  line-height: 1.6;
  resize: vertical;
  min-height: 120px;
  transition: border-color var(--transition-fast);
}
.notes-card__textarea:focus { border-color: var(--color-primary); outline: none; }
.notes-card__footer-flex {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 12px;
  font-size: 0.78rem;
  color: var(--color-text-subtle);
}
#notesCharCount {
  margin-left: auto;
}

/* ---------- Related Tools ---------- */
.related-tools {
  margin-top: 24px;
}
.related-tools__title {
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-brand);
  margin-bottom: 12px;
  padding-left: 2px;
}
.related-tools__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 12px;
}
.related-tools__card {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  background: #FFF5CC;
  border: 1px solid #FFE066;
  border-radius: var(--radius-card);
  padding: 16px;
  text-decoration: none;
  color: inherit;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
}
.related-tools__card:hover {
  border-color: var(--color-brand);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}
.related-tools__card--soon {
  cursor: default;
  opacity: 0.85;
}
.related-tools__icon {
  font-size: 1.25rem;
  background: #fff;
  padding: 8px;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
  line-height: 1;
}
.related-tools__card h4 {
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 2px;
}
.related-tools__card p {
  font-size: 0.78rem;
  color: var(--color-text-muted);
}

/* ---------- Modal ---------- */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(17, 17, 17, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 20px;
  animation: fadeIn 200ms ease both;
}
.modal {
  background: var(--color-card);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-lg);
  padding: 28px;
  max-width: 400px;
  width: 100%;
  animation: modalIn 220ms cubic-bezier(0.34, 1.56, 0.64, 1) both;
}
.modal h2 { font-size: 1.1rem; font-weight: 700; margin-bottom: 10px; }
.modal p { color: var(--color-text-muted); font-size: 0.9rem; margin-bottom: 22px; }
.modal__actions { display: flex; justify-content: flex-end; gap: 10px; }

.modal--completed { position: relative; max-width: 440px; }
.modal__close {
  position: absolute;
  top: 14px;
  right: 14px;
  width: 28px;
  height: 28px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  border: 1px solid var(--color-border);
  background: var(--color-card);
  color: var(--color-text-muted);
  transition: background var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
}
.modal__close svg { width: 14px; height: 14px; }
.modal__close:hover { background: var(--color-accent-red); color: #fff; border-color: var(--color-accent-red); }

.completed-modal-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  max-height: 320px;
  overflow-y: auto;
}
.completed-modal-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  background: color-mix(in srgb, var(--color-success) 8%, transparent);
  border: 1px solid color-mix(in srgb, var(--color-success) 25%, transparent);
}
.completed-modal-item svg { width: 18px; height: 18px; color: var(--color-success); flex-shrink: 0; }
.completed-modal-item__name { flex: 1; font-size: 0.9rem; font-weight: 600; color: var(--color-text); }
.completed-modal-item__count { font-size: 0.78rem; font-weight: 700; color: var(--color-success); }
.completed-modal-empty {
  color: var(--color-text-subtle);
  font-size: 0.88rem;
  text-align: center;
  padding: 20px 0;
}

@keyframes modalIn {
  from { opacity: 0; transform: scale(0.94) translateY(8px); }
  to { opacity: 1; transform: scale(1) translateY(0); }
}

/* ---------- Toast ---------- */
.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(0);
  background: var(--color-primary);
  color: var(--color-bg);
  padding: 12px 20px;
  border-radius: var(--radius-btn);
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  font-weight: 500;
  box-shadow: var(--shadow-lg);
  z-index: 1100;
  animation: toastIn 250ms cubic-bezier(0.34, 1.56, 0.64, 1) both;
}
.toast svg { width: 16px; height: 16px; color: var(--color-success); }

@keyframes toastIn {
  from { opacity: 0; transform: translateX(-50%) translateY(12px); }
  to { opacity: 1; transform: translateX(-50%) translateY(0); }
}

/* ---------- Confetti ---------- */
.confetti-canvas {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1200;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

/* ---------- Responsive ---------- */
@media (max-width: 640px) {
  .hero { padding: 36px 16px 40px; }
  .progress-card { flex-direction: column; align-items: flex-start; padding: 24px; margin-top: -40px; position: relative; }
  .progress-card__stats {
    position: absolute;
    top: 42px;
    left: 188px;
    right: 20px;
    flex-direction: column;
    gap: 10px;
    margin: 0;
  }
  .stat { flex-direction: row; align-items: center; gap: 6px; }
  .stat__icon { display: inline-flex; }
  .stat__value { font-size: 0.95rem; }
  .stat__label { font-size: 0.68rem; }
  .progress-card__eta { margin-top: 4px; }
  .toolbar { flex-direction: column; }
  .toolbar .btn { width: 100%; }
  .category-card__header { padding: 16px; }
  .category-card__meta { display: none; }
}

/* ---------- Print Mode ---------- */
@media print {
  nav, #footer-container, .hero__cta-group, .toolbar,
  .searchbar, .toast, .confetti-canvas, .related-tools,
  .modal-overlay {
    display: none !important;
  }
  body { background: #fff; color: #000; }
  .progress-card, .category-card, .notes-card {
    box-shadow: none;
    border: 1px solid #ccc;
    break-inside: avoid;
  }
  .category-card__body { grid-template-rows: 1fr !important; }
}