/* ========================================================================
   kalkulator-dat.pl — Globalny arkusz stylów (Mobile-First)
   Jednostki: rem / vw / vh / % — responsywność jak natywna aplikacja
   ========================================================================== */

/* ---------- Zmienne globalne ---------- */
:root {
  --color-primary: #2563eb;
  --color-primary-dark: #1d4ed8;
  --color-primary-light: #dbeafe;
  --color-accent: #0ea5e9;
  --color-bg: #f8fafc;
  --color-surface: #ffffff;
  --color-text: #1e293b;
  --color-text-muted: #64748b;
  --color-border: #e2e8f0;
  --color-success: #16a34a;
  --color-success-light: #dcfce7;
  --color-warning: #f59e0b;
  --color-error: #dc2626;
  --color-footer-bg: #0f172a;
  --color-footer-text: #cbd5e1;

  --radius: 0.75rem;
  --radius-sm: 0.5rem;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.12);

  --max-width: 75rem; /* 1200px */
  --header-height: 4rem;

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, "Noto Sans", sans-serif;
}

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

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

body {
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.65;
  color: var(--color-text);
  background-color: var(--color-bg);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

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

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

ul,
ol {
  padding-left: 1.5rem;
}

li {
  margin-bottom: 0.4rem;
}

/* ------- Layout container ---------- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: 1.25rem;
}

main {
  flex: 1 0 auto;
  padding-block: 1.5rem 3rem;
}

/* ---------- Typografia ---------- */
h1,
h2,
h3,
h4,
h5,
h6 {
  line-height: 1.25;
  color: var(--color-text);
  margin-bottom: 0.75rem;
  font-weight: 700;
}

h1 {
  font-size: clamp(1.6rem, 5vw, 2.4rem);
  margin-bottom: 1rem;
}

h2 {
  font-size: clamp(1.35rem, 4vw, 1.85rem);
  margin-top: 2.5rem;
  padding-bottom: 0.4rem;
  border-bottom: 2px solid var(--color-border);
}

h3 {
  font-size: clamp(1.15rem, 3vw, 1.4rem);
  margin-top: 1.5rem;
}

h4 {
  font-size: 1.1rem;
  margin-top: 1.2rem;
}

h5 {
  font-size: 1rem;
}

p {
  margin-bottom: 1rem;
}

strong {
  font-weight: 700;
  color: var(--color-text);
}

/* ------- Header / Nawigacja ---------- */
.site-header {
  background-color: var(--color-surface);
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: 1000;
  border-bottom: 1px solid var(--color-border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: var(--header-height);
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--color-primary);
  white-space: nowrap;
}

.logo:hover {
  text-decoration: none;
}

.logo-icon {
  font-size: 1.5rem;
}

/* Hamburger — czysty CSS, bez JS */
.nav-toggle {
  display: none;
}

.nav-toggle-label {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 0.35rem;
  width: 2.75rem;
  height: 2.75rem;
  cursor: pointer;
  padding: 0.5rem;
}

.nav-toggle-label span {
  display: block;
  height: 3px;
  width: 100%;
  background-color: var(--color-text);
  border-radius: 2px;
  transition: all 0.25s ease;
}

.main-nav ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.main-nav a {
  display: block;
  padding: 0.75rem 1rem;
  color: var(--color-text);
  font-weight: 600;
  font-size: 0.95rem;
  border-radius: var(--radius-sm);
}

.main-nav a:hover,
.main-nav a.active {
  background-color: var(--color-primary-light);
  color: var(--color-primary-dark);
  text-decoration: none;
}

/* Mobile nav */
@media (max-width: 56rem) {
  .main-nav {
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    background-color: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
  }

  .main-nav ul {
    flex-direction: column;
    padding: 0.5rem 1.25rem 1rem;
  }

  .nav-toggle:checked ~ .main-nav {
    max-height: 40rem;
  }

  .nav-toggle:checked ~ .nav-toggle-label span:nth-child(1) {
    transform: translateY(0.65rem) rotate(45deg);
  }

  .nav-toggle:checked ~ .nav-toggle-label span:nth-child(2) {
    opacity: 0;
  }

  .nav-toggle:checked ~ .nav-toggle-label span:nth-child(3) {
    transform: translateY(-0.65rem) rotate(-45deg);
  }
}

/* Desktop nav */
@media (min-width: 56.0625rem) {
  .nav-toggle-label {
    display: none;
  }

  .main-nav ul {
    display: flex;
    align-items: center;
    gap: 0.25rem;
  }
}

/* ---------- Breadcrumb ---------- */
.breadcrumb {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  padding-block: 1rem 0;
}

.breadcrumb ol {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  padding: 0;
  margin: 0;
}

.breadcrumb li {
  margin: 0;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.breadcrumb li:not(:last-child)::after {
  content: "›";
  color: var(--color-text-muted);
}

/* --------- Hero / Intro ---------- */
.hero {
  text-align: center;
  padding-block: 1rem 0.5rem;
}

.hero p {
  max-width: 50rem;
  margin-inline: auto;
  color: var(--color-text-muted);
  font-size: 1.1rem;
}

/* --------- Kalkulator (komponent) ---------- */
.calculator {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.5rem;
  margin-block: 1.5rem;
}

.calculator-title {
  margin-top: 0;
  text-align: center;
  border-bottom: none;
}

.calc-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

@media (min-width: 40rem) {
  .calc-grid.cols-2 {
    grid-template-columns: 1fr 1fr;
  }
  .calc-grid.cols-3 {
    grid-template-columns: repeat(3, 1fr);
  }
}

.field {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.field label {
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--color-text);
}

.field input,
.field select {
  width: 100%;
  padding: 0.8rem 0.9rem;
  font-size: 1rem;
  font-family: inherit;
  color: var(--color-text);
  background-color: var(--color-bg);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
  -webkit-appearance: none;
  appearance: none;
}

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

.field select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%2364748b' d='M6 8L0 0h12z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.9rem center;
  padding-right: 2.5rem;
}

.field .field-hint {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  font-weight: 400;
}

.checkbox-field {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex-direction: row;
  margin-top: 0.75rem;
}

.checkbox-field input[type="checkbox"] {
  width: 1.25rem;
  height: 1.25rem;
  accent-color: var(--color-primary);
  flex-shrink: 0;
}

.checkbox-field label {
  margin: 0;
  cursor: pointer;
  font-weight: 500;
}

/* Przyciski */
.btn-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.25rem;
}

.btn {
  flex: 1 1 auto;
  min-width: 8rem;
  padding: 0.85rem 1.5rem;
  font-size: 1rem;
  font-weight: 700;
  font-family: inherit;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background-color 0.15s ease, transform 0.1s ease;
  text-align: center;
}

.btn:active {
  transform: translateY(1px);
}

.btn-sm {
  flex: 0 0 auto;
  min-width: auto;
  padding: 0.5rem 1rem;
  font-size: 0.85rem;
}

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

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

.btn-secondary {
  background-color: var(--color-bg);
  color: var(--color-text);
  border: 1.5px solid var(--color-border);
}

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

/* Wynik */
.result {
  margin-top: 1.5rem;
  padding: 1.25rem;
  background-color: var(--color-primary-light);
  border: 1px solid var(--color-primary);
  border-radius: var(--radius-sm);
  display: none;
}

.result.show {
  display: block;
  animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(0.5rem);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.result-main {
  font-size: clamp(1.5rem, 6vw, 2.25rem);
  font-weight: 800;
  color: var(--color-primary-dark);
  text-align: center;
  margin-bottom: 0.75rem;
}

.result-sub {
  text-align: center;
  color: var(--color-text-muted);
  font-size: 0.95rem;
  margin-top: -0.5rem;
  margin-bottom: 1rem;
}

.result-details {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0.5rem;
}

.result-details li {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.5rem 0.75rem;
  background-color: var(--color-surface);
  border-radius: var(--radius-sm);
  margin: 0;
  font-size: 0.95rem;
}

.result-details li span:last-child {
  font-weight: 700;
  text-align: right;
}

/* Sekcja "ciekawostki" / dodatkowe dane w wyniku */
.result-extra {
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px dashed var(--color-primary);
}

.result-extra h4 {
  margin-top: 0;
  margin-bottom: 0.6rem;
  font-size: 0.95rem;
  color: var(--color-primary-dark);
}

.result-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1rem;
}

.result-actions .btn {
  flex: 1 1 auto;
  font-size: 0.9rem;
  padding: 0.6rem 1rem;
}

.error-msg {
  color: var(--color-error);
  font-weight: 600;
  font-size: 0.9rem;
  margin-top: 0.75rem;
  display: none;
}

.error-msg.show {
  display: block;
}

/* ---------- Historia obliczeń (localStorage) ---------- */
.history-box {
  margin-top: 1.5rem;
  padding: 1.25rem;
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
}

.history-box h3 {
  margin-top: 0;
  margin-bottom: 0.75rem;
  font-size: 1.05rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.history-list {
  list-style: none;
  padding: 0;
  margin: 0 0 0.75rem;
  display: grid;
  gap: 0.5rem;
}

.history-list li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 0.6rem 0.85rem;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  margin: 0;
}

.history-list li .history-meta {
  color: var(--color-text-muted);
  font-size: 0.8rem;
}

.history-list li .history-value {
  font-weight: 700;
  color: var(--color-primary-dark);
  white-space: nowrap;
}

.history-empty {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  font-style: italic;
}

/* ---------- Treść / artykuł ---------- */
.content-section {
  max-width: 50rem;
}

.content-section.wide {
  max-width: var(--max-width);
}

/* ---------- Lista narzędzi (karty) ---------- */
.tools-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  margin-block: 1.5rem;
}

@media (min-width: 40rem) {
  .tools-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 60rem) {
  .tools-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.tool-card {
  display: block;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.25rem;
  box-shadow: var(--shadow-sm);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
  height: 100%;
}

.tool-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow);
  text-decoration: none;
}

.tool-card h3 {
  margin-top: 0;
  font-size: 1.1rem;
  color: var(--color-primary-dark);
}

.tool-card p {
  margin-bottom: 0;
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

/* ---------- FAQ (czysty CSS) ------- */
.faq-item {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  margin-bottom: 0.75rem;
  overflow: hidden;
}

.faq-item summary {
  padding: 1rem 1.25rem;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: "+";
  font-size: 1.5rem;
  color: var(--color-primary);
  transition: transform 0.2s ease;
  flex-shrink: 0;
}

.faq-item[open] summary::after {
  transform: rotate(45deg);
}

.faq-item .faq-answer {
  padding: 0 1.25rem 1.25rem;
  color: var(--color-text-muted);
}

.faq-item .faq-answer a {
  font-weight: 600;
}

/* ---------- Disclaimer ---------- */
.disclaimer {
  background-color: #fef3c7;
  border-left: 4px solid var(--color-warning);
  border-radius: var(--radius-sm);
  padding: 1rem 1.25rem;
  margin-block: 1.5rem;
}

.disclaimer p {
  margin: 0;
  font-size: 0.92rem;
}

/* Info box (porady w treści) */
.info-box {
  background-color: var(--color-primary-light);
  border-left: 4px solid var(--color-primary);
  border-radius: var(--radius-sm);
  padding: 1rem 1.25rem;
  margin-block: 1.5rem;
}

.info-box p:last-child {
  margin-bottom: 0;
}

/* ---------- Reklama (placeholder) ---------- */
.ad-slot {
  margin-block: 1.5rem;
  min-height: 6rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: #f1f5f9;
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text-muted);
  font-size: 0.8rem;
  text-align: center;
}

/* ---------- Powiązane narzędzia ---------- */
.related-tools ul {
  list-style: none;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.6rem;
}

@media (min-width: 40rem) {
  .related-tools ul {
    grid-template-columns: repeat(2, 1fr);
  }
}

.related-tools a {
  display: block;
  padding: 0.85rem 1rem;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-weight: 600;
}

.related-tools a:hover {
  background-color: var(--color-primary-light);
  text-decoration: none;
}

/* ---------- Tabela świąt / dane ---------- */
.table-wrap {
  overflow-x: auto;
  margin-block: 1rem;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

th,
td {
  padding: 0.65rem 0.85rem;
  text-align: left;
  border: 1px solid var(--color-border);
}

th {
  background-color: var(--color-primary-light);
  font-weight: 700;
}

tr:nth-child(even) td {
  background-color: var(--color-bg);
}

/* ---------- Footer ---------- */
.site-footer {
  background-color: var(--color-footer-bg);
  color: var(--color-footer-text);
  padding-block: 2.5rem 1.5rem;
  margin-top: auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

@media (min-width: 40rem) {
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 60rem) {
  .footer-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.footer-col h3 {
  color: #fff;
  font-size: 1rem;
  margin-top: 0;
  margin-bottom: 1rem;
  border: none;
  padding: 0;
}

.footer-col ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-col li {
  margin-bottom: 0.6rem;
}

.footer-col a {
  color: var(--color-footer-text);
  font-size: 0.9rem;
}

.footer-col a:hover {
  color: #fff;
}

.footer-col p {
  font-size: 0.9rem;
  color: var(--color-footer-text);
}

.footer-bottom {
  text-align: center;
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid #1e293b;
  font-size: 0.85rem;
  color: #94a3b8;
}

/* ---------- Cookie banner (czysty CSS, zamykany checkboxem) ---------- */
.cookie-toggle {
  display: none;
}

.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 2000;
  background-color: var(--color-footer-bg);
  color: var(--color-footer-text);
  padding: 1rem 1.25rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  box-shadow: 0 -4px 12px rgba(0, 0, 0, 0.15);
  font-size: 0.9rem;
}

.cookie-toggle:checked ~ .cookie-banner {
  display: none;
}

.cookie-banner p {
  margin: 0;
  flex: 1 1 20rem;
}

.cookie-accept-label {
  display: inline-block;
  background-color: var(--color-primary);
  color: #fff;
  padding: 0.6rem 1.5rem;
  border-radius: var(--radius-sm);
  font-weight: 700;
  cursor: pointer;
  white-space: nowrap;
}

.cookie-accept-label:hover {
  background-color: var(--color-primary-dark);
}

/* ---------- 404 ---------- */
.error-page {
  text-align: center;
  padding-block: 3rem;
}

.error-page .code,
.error-page .error-code {
  font-size: clamp(4rem, 18vw, 8rem);
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1;
  margin: 0;
}

.error-page .error-lead {
  color: var(--color-text-muted);
  max-width: 38rem;
  margin: 1rem auto 2rem;
}

.error-page h2 {
  margin-top: 2.5rem;
}

.btn-group-center {
  justify-content: center;
}

/* ---------- Toast (kopiowanie) ---------- */
.toast {
  position: fixed;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%) translateY(2rem);
  background-color: var(--color-text);
  color: #fff;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius);
  font-size: 0.9rem;
  font-weight: 600;
  opacity: 0;
  pointer-events: none;
  transition: all 0.3s ease;
  z-index: 3000;
}

.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* --------- Utility ---------- */
.text-center {
  text-align: center;
}

.mt-0 {
  margin-top: 0;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}