/* Plik: css/style.css */

:root {
  --bg-color: #ffffff;
  --text-color: #1a1a1a;
  --primary-color: #005f73;
  --secondary-color: #0a9396;
  --accent-color: #94d2bd;
  --light-accent-color: #e9d8a6;
  --subtle-bg-color: #f8f9fa;
  --border-color: #dee2e6;
  --shadow-color: rgba(0, 0, 0, 0.08);
  --heading-color: #001219;
  --link-color: #005f73;
  --link-hover-color: #0a9396;
  --button-text-color: #ffffff;

  --font-family-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji";
  --font-family-serif: "Georgia", "Times New Roman", serif;

  --font-size-base: 16px;
  --line-height-base: 1.7;

  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2.5rem;
  --spacing-xxl: 4rem;

  --border-radius-sm: 4px;
  --border-radius-md: 8px;
  --border-radius-lg: 16px;

  --transition-speed: 0.3s;
  --transition-timing: ease-in-out;

  --container-width: 1240px;
  --shadow-sm: 0 2px 4px var(--shadow-color);
  --shadow-md: 0 5px 15px var(--shadow-color);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg-color: #121212;
    --text-color: #e0e0e0;
    --primary-color: #94d2bd;
    --secondary-color: #ee9b00;
    --accent-color: #0a9396;
    --light-accent-color: #ae2012;
    --subtle-bg-color: #1e1e1e;
    --border-color: #333333;
    --shadow-color: rgba(0, 0, 0, 0.4);
    --heading-color: #ffffff;
    --link-color: #94d2bd;
    --link-hover-color: #ee9b00;
    --button-text-color: #001219;
  }
}

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

html {
  font-size: var(--font-size-base);
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-family-sans);
  line-height: var(--line-height-base);
  background-color: var(--bg-color);
  color: var(--text-color);
  transition: background-color var(--transition-speed) var(--transition-timing),
    color var(--transition-speed) var(--transition-timing);
}

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

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-family-sans);
  font-weight: 700;
  color: var(--heading-color);
  line-height: 1.2;
  margin-bottom: var(--spacing-md);
}

h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
}

h2 {
  font-size: clamp(2rem, 4vw, 3rem);
}

h3 {
  font-size: clamp(1.5rem, 3vw, 2rem);
}

h4 {
  font-size: clamp(1.1rem, 2vw, 1.25rem);
}

p {
  margin-bottom: var(--spacing-lg);
}

a {
  color: var(--link-color);
  text-decoration: none;
  transition: color var(--transition-speed) var(--transition-timing);
}

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

ul,
ol {
  padding-left: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
}

li {
  margin-bottom: var(--spacing-sm);
}

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

blockquote {
  border-left: 4px solid var(--primary-color);
  padding-left: var(--spacing-lg);
  margin: var(--spacing-lg) 0;
  font-style: italic;
  font-family: var(--font-family-serif);
}

cite {
  font-style: normal;
  display: block;
  margin-top: var(--spacing-md);
}

/* LAYOUT */
.container {
  max-width: var(--container-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--spacing-lg);
  padding-right: var(--spacing-lg);
}

section {
  padding-top: var(--spacing-xxl);
  padding-bottom: var(--spacing-xxl);
}

section:nth-of-type(odd) {
  background-color: var(--subtle-bg-color);
}

.section-header {
  margin-bottom: var(--spacing-xl);
}

.section-header.centered {
  text-align: center;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

/* HEADER */
.main-header {
  background-color: var(--bg-color);
  border-bottom: 1px solid var(--border-color);
  padding: var(--spacing-md) 0;
  position: sticky;
  top: 0;
  z-index: 100;
  transition: background-color var(--transition-speed) var(--transition-timing);
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 1.75rem;
  font-weight: 300;
  text-decoration: none;
  color: var(--heading-color);
}

.logo strong {
  font-weight: 800;
  color: var(--primary-color);
}

.main-nav ul {
  display: flex;
  gap: var(--spacing-lg);
  list-style: none;
  margin: 0;
  padding: 0;
}

.main-nav a {
  font-size: 1rem;
  font-weight: 600;
  padding: var(--spacing-sm) 0;
  position: relative;
  text-decoration: none;
}

.main-nav a::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--secondary-color);
  transition: width var(--transition-speed) var(--transition-timing);
}

.main-nav a:hover::after {
  width: 100%;
}

/* BUTTONS */
.button {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-lg);
  font-size: 1rem;
  font-weight: 700;
  border-radius: var(--border-radius-md);
  border: 2px solid transparent;
  cursor: pointer;
  text-align: center;
  text-decoration: none;
  transition: all var(--transition-speed) var(--transition-timing);
}

.button.primary {
  background-color: var(--primary-color);
  color: var(--button-text-color);
}

.button.primary:hover {
  background-color: var(--link-hover-color);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
  text-decoration: none;
}

.button.large-button {
  padding: var(--spacing-lg) var(--spacing-xl);
  font-size: 1.1rem;
}

/* HERO SECTION */
.hero-section {
  padding-top: var(--spacing-xxl);
  padding-bottom: var(--spacing-xxl);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-xl);
  align-items: center;
}

.hero-text .subtitle {
  font-size: 1.25rem;
  line-height: 1.6;
  max-width: 60ch;
  margin-top: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
}

.hero-image img {
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-md);
}

/* FEATURES GRID */
.features-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-lg);
}

.feature-card {
  background-color: var(--bg-color);
  padding: var(--spacing-xl);
  border-radius: var(--border-radius-md);
  border: 1px solid var(--border-color);
  text-align: center;
  transition: transform var(--transition-speed) var(--transition-timing),
    box-shadow var(--transition-speed) var(--transition-timing);
}

.feature-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
}

.feature-icon {
  margin-bottom: var(--spacing-lg);
}

.feature-icon svg {
  width: 48px;
  height: 48px;
  color: var(--primary-color);
}

/* ACCORDION */
.accordion-item {
  border-bottom: 1px solid var(--border-color);
}

.accordion-item:first-of-type {
  border-top: 1px solid var(--border-color);
}

.accordion-header {
  width: 100%;
  background-color: transparent;
  border: none;
  padding: var(--spacing-lg) var(--spacing-sm);
  text-align: left;
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--heading-color);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.accordion-header svg {
  width: 24px;
  height: 24px;
  transition: transform var(--transition-speed) var(--transition-timing);
  color: var(--primary-color);
}

.accordion-header.active svg {
  transform: rotate(180deg);
}

.accordion-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.5s var(--transition-timing);
}

.accordion-content.active {
  max-height: 1000px; /* Arbitrary large value */
}

.accordion-content p,
.accordion-content ul {
  padding: 0 var(--spacing-sm) var(--spacing-lg);
}

/* VIDEO LESSONS */
.video-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-lg);
}

.video-card {
  position: relative;
  border-radius: var(--border-radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  cursor: pointer;
}

.video-card img {
  transition: transform var(--transition-speed) var(--transition-timing);
}

.video-card:hover img {
  transform: scale(1.05);
}

.video-card h3 {
  margin: var(--spacing-md) 0 var(--spacing-sm);
  font-size: 1.1rem;
}

.video-card p {
  font-size: 0.95rem;
  margin: 0;
}

.video-play-button {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 70px;
  height: 70px;
  background-color: rgba(255, 255, 255, 0.8);
  border-radius: 50%;
  display: flex;
  justify-content: center;
  align-items: center;
  transition: background-color var(--transition-speed) var(--transition-timing);
}

.video-play-button svg {
  width: 36px;
  height: 36px;
  color: var(--primary-color);
  transform: translateX(2px);
}

.video-card:hover .video-play-button {
  background-color: white;
}

/* Add overlay to card for text */
.video-card::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 60%;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.8), transparent);
  pointer-events: none;
}

.video-card h3,
.video-card p {
  position: relative;
  z-index: 2;
  color: white;
  padding: 0 var(--spacing-lg);
}

.video-card h3 {
  padding-top: var(--spacing-xl);
}
.video-card p {
  padding-bottom: var(--spacing-lg);
}

/* TABS */
.tabs-container {
  width: 100%;
}

.tabs-nav {
  display: flex;
  border-bottom: 2px solid var(--border-color);
  margin-bottom: var(--spacing-xl);
  gap: var(--spacing-sm);
}

.tab-button {
  padding: var(--spacing-md) var(--spacing-lg);
  border: none;
  background-color: transparent;
  cursor: pointer;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-color);
  position: relative;
  border-radius: var(--border-radius-sm) var(--border-radius-sm) 0 0;
}

.tab-button::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: transparent;
  transition: background-color var(--transition-speed) var(--transition-timing);
}

.tab-button.active {
  color: var(--primary-color);
}

.tab-button.active::after {
  background-color: var(--primary-color);
}

.tab-pane {
  display: none;
}

.tab-pane.active {
  display: block;
  animation: fadeIn 0.5s ease-in-out;
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

/* FORMS */
.calculator-form,
.contact-form {
  background-color: var(--subtle-bg-color);
  padding: var(--spacing-xl);
  border-radius: var(--border-radius-md);
  border: 1px solid var(--border-color);
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-lg);
}

.form-group {
  display: flex;
  flex-direction: column;
}

.form-group label {
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
  font-size: 0.9rem;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-sm);
  background-color: var(--bg-color);
  color: var(--text-color);
  font-size: 1rem;
  transition: border-color var(--transition-speed) var(--transition-timing),
    box-shadow var(--transition-speed) var(--transition-timing);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(0, 95, 115, 0.2);
}

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

.calculator-result {
  margin-top: var(--spacing-xl);
  padding: var(--spacing-lg);
  background-color: var(--bg-color);
  border-left: 4px solid var(--secondary-color);
  border-radius: 0 var(--border-radius-sm) var(--border-radius-sm) 0;
}

.calculator-result h4 {
  margin-bottom: var(--spacing-sm);
}

/* ASK QUESTION SECTION */
.ask-question-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-xxl);
  align-items: start;
}

.ask-question-form-container {
  background-color: var(--bg-color);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-md);
  padding: var(--spacing-xl);
}

.faq-preview ul {
  list-style: none;
  padding: 0;
}

.faq-preview li {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-md);
}

.faq-preview svg {
  width: 20px;
  height: 20px;
  color: var(--accent-color);
  flex-shrink: 0;
  margin-top: 4px;
}

.text-link {
  font-weight: 700;
  display: inline-block;
  margin-top: var(--spacing-lg);
}

.form-thank-you-message {
  display: none;
  text-align: center;
  padding: var(--spacing-xl);
}

.form-thank-you-message.visible {
  display: block;
  animation: fadeIn 0.5s ease-in-out;
}

.form-thank-you-message svg {
  color: var(--secondary-color);
  margin-bottom: var(--spacing-md);
}

/* AGE GROUPS SECTION */
.age-groups-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-lg);
}

.age-group-card {
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  padding: var(--spacing-xl);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.age-group-icon {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  display: flex;
  justify-content: center;
  align-items: center;
  background-color: var(--primary-color);
  margin-bottom: var(--spacing-lg);
}

.age-group-icon svg {
  width: 32px;
  height: 32px;
  color: var(--button-text-color);
}

/* TESTIMONIALS SECTION */
.testimonials-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-lg);
}

.testimonial-card {
  background-color: var(--bg-color);
  padding: var(--spacing-xl);
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-sm);
}

.testimonial-card blockquote {
  margin: 0;
  border: none;
  padding: 0;
}

.testimonial-card blockquote p {
  font-size: 1.1rem;
}

/* FINAL CTA SECTION */
.final-cta-section {
  background: var(--primary-color);
  color: var(--button-text-color);
  text-align: center;
}

.final-cta-section h2,
.final-cta-section p {
  color: var(--button-text-color);
}

.final-cta-section h2 {
  max-width: 20ch;
  margin-left: auto;
  margin-right: auto;
}

.cta-content {
  max-width: 700px;
  margin: 0 auto;
}

.cta-button {
  background-color: var(--secondary-color);
  color: var(--button-text-color);
}

.cta-button:hover {
  background-color: var(--light-accent-color);
  color: var(--heading-color);
}

/* FOOTER */
.main-footer {
  background-color: var(--subtle-bg-color);
  padding-top: var(--spacing-xxl);
  border-top: 1px solid var(--border-color);
  font-size: 0.9rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--spacing-xl);
  padding-bottom: var(--spacing-xl);
}

.footer-col h4 {
  margin-bottom: var(--spacing-lg);
  color: var(--heading-color);
  font-size: 1.1rem;
}

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

.footer-col a {
  color: var(--text-color);
  text-decoration: none;
}

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

.footer-col address {
  font-style: normal;
  line-height: 1.8;
}

.footer-bottom {
  border-top: 1px solid var(--border-color);
  padding: var(--spacing-lg) 0;
  text-align: center;
}

/* COOKIE NOTICE */
.cookie-notice {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background-color: var(--heading-color);
  color: var(--bg-color);
  padding: var(--spacing-md) 0;
  z-index: 200;
  transform: translateY(100%);
  transition: transform 0.5s ease-in-out;
}

.cookie-notice.visible {
  transform: translateY(0);
}

.cookie-notice .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--spacing-lg);
}

.cookie-notice p {
  margin: 0;
}

.cookie-notice a {
  color: var(--accent-color);
  text-decoration: underline;
}

/* ANIMATIONS */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.animate-on-scroll.visible {
  opacity: 1;
  transform: translateY(0);
}

/* RESPONSIVE STYLES */

/* Mobile hamburger menu button */
.mobile-nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-sm);
  z-index: 101;
}

.mobile-nav-toggle .icon-menu,
.mobile-nav-toggle .icon-close {
  width: 28px;
  height: 28px;
  color: var(--heading-color);
}

.mobile-nav-toggle .icon-close {
  display: none;
}

.nav-open .mobile-nav-toggle .icon-menu {
  display: none;
}

.nav-open .mobile-nav-toggle .icon-close {
  display: block;
}

/* Tablet Styles */
@media (min-width: 768px) {
  .features-grid,
  .testimonials-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .video-grid,
  .age-groups-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .hero-grid {
    grid-template-columns: 1fr 1fr;
  }

  .ask-question-grid {
    grid-template-columns: 1fr 1fr;
  }

  .form-grid {
    grid-template-columns: 1fr 1fr;
  }
}

/* Desktop Styles */
@media (min-width: 1024px) {
  .features-grid,
  .testimonials-grid,
  .video-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* Mobile navigation */
@media (max-width: 767px) {
  .main-nav {
    position: fixed;
    top: 0;
    right: 0;
    width: 80%;
    height: 100vh;
    background-color: var(--bg-color);
    box-shadow: -5px 0 15px rgba(0, 0, 0, 0.1);
    transform: translateX(100%);
    transition: transform 0.4s ease-in-out;
    padding-top: var(--spacing-xxl);
    z-index: 99;
  }

  .nav-open .main-nav {
    transform: translateX(0);
  }

  .main-nav ul {
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xl);
  }

  .main-nav a {
    font-size: 1.5rem;
  }

  .header-actions {
    display: none; /* Hide main CTA next to nav on mobile */
  }

  .mobile-nav-toggle {
    display: block;
  }

  .cookie-notice .container {
    flex-direction: column;
    text-align: center;
    gap: var(--spacing-md);
  }

  .hero-text {
    text-align: center;
  }

  .hero-grid {
    grid-template-columns: 1fr;
  }

  .hero-image {
    order: -1;
    margin-bottom: var(--spacing-xl);
  }
}