/*
 * style.css
 */

:root {
  /* Light Theme */
  --font-primary: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji",
    "Segoe UI Symbol";
  --font-serif: "Georgia", "Times New Roman", serif;

  --color-bg: #f8f9fa;
  --color-surface: #ffffff;
  --color-surface-secondary: #f1f3f5;

  --color-text-primary: #212529;
  --color-text-secondary: #495057;
  --color-text-muted: #868e96;

  --color-accent: #205d93;
  --color-accent-hover: #1a4b76;
  --color-accent-text: #ffffff;

  --color-border: #dee2e6;
  --color-shadow: rgba(0, 0, 0, 0.05);

  /* Spacing & Sizing */
  --spacing-xs: 4px;
  --spacing-s: 8px;
  --spacing-m: 16px;
  --spacing-l: 24px;
  --spacing-xl: 32px;
  --spacing-xxl: 48px;
  --spacing-xxxl: 64px;

  --container-width: 1200px;
  --container-narrow-width: 800px;

  --radius-s: 4px;
  --radius-m: 8px;
  --radius-l: 16px;

  --header-height: 80px;

  /* Transitions */
  --transition-fast: 0.2s ease-in-out;
  --transition-normal: 0.3s ease-in-out;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: #121212;
    --color-surface: #1e1e1e;
    --color-surface-secondary: #2a2a2a;

    --color-text-primary: #eaeaea;
    --color-text-secondary: #b0b0b0;
    --color-text-muted: #767676;

    --color-accent: #61a5e4;
    --color-accent-hover: #82b9eb;
    --color-accent-text: #0d0d0d;

    --color-border: #3a3a3a;
    --color-shadow: rgba(0, 0, 0, 0.2);
  }
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-primary);
  background-color: var(--color-bg);
  color: var(--color-text-primary);
  line-height: 1.7;
}

img,
picture,
video,
canvas,
svg {
  display: block;
  max-width: 100%;
}

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-m);
}

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

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

h3 {
  font-size: clamp(1.25rem, 2.5vw, 1.75rem);
}

p {
  margin-bottom: var(--spacing-m);
  max-width: 75ch;
  color: var(--color-text-secondary);
}

ul,
ol {
  list-style-position: inside;
  padding-left: var(--spacing-m);
}

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

blockquote p {
  color: var(--color-text-primary);
}

blockquote footer {
  font-style: normal;
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

address {
  font-style: normal;
  line-height: 1.6;
}

/* Layout */
.container {
  width: 100%;
  max-width: var(--container-width);
  margin-left: auto;
  margin-right: auto;
  padding: 0 var(--spacing-l);
}

.container-narrow {
  width: 100%;
  max-width: var(--container-narrow-width);
  margin-left: auto;
  margin-right: auto;
  padding: 0 var(--spacing-l);
}

section {
  padding: var(--spacing-xxxl) 0;
}

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-xxl);
}

.section-header h2 {
  margin-bottom: var(--spacing-m);
}

.section-header p {
  margin-left: auto;
  margin-right: auto;
  font-size: 1.1rem;
}

/* Main Header */
.main-header {
  height: var(--header-height);
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 1000;
  transition: background-color var(--transition-normal);
}

.main-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-s);
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--color-text-primary);
  text-decoration: none;
}

.logo:hover {
  color: var(--color-accent);
  text-decoration: none;
}

.logo svg {
  color: var(--color-accent);
  transition: transform var(--transition-normal);
}

.logo:hover svg {
  transform: rotate(30deg);
}

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

.main-nav a {
  color: var(--color-text-secondary);
  font-weight: 500;
  position: relative;
  text-decoration: none;
}

.main-nav a::after {
  content: "";
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-accent);
  transition: width var(--transition-normal);
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--color-text-primary);
}

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

/* Buttons */
.cta-button,
.cta-button-primary,
.cta-button-secondary {
  display: inline-block;
  padding: var(--spacing-m) var(--spacing-xl);
  border-radius: var(--radius-m);
  font-weight: 600;
  text-decoration: none;
  border: 2px solid transparent;
  transition: all var(--transition-normal);
  cursor: pointer;
  text-align: center;
}

.cta-button {
  background-color: transparent;
  color: var(--color-accent);
  border-color: var(--color-accent);
}

.cta-button:hover {
  background-color: var(--color-accent);
  color: var(--color-accent-text);
  text-decoration: none;
}

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

.cta-button-primary:hover {
  background-color: var(--color-accent-hover);
  color: var(--color-accent-text);
  transform: translateY(-2px);
  box-shadow: 0 4px 15px var(--color-shadow);
  text-decoration: none;
}

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

.cta-button-secondary:hover {
  background-color: var(--color-border);
  transform: translateY(-2px);
  box-shadow: 0 4px 15px var(--color-shadow);
  text-decoration: none;
}

/* Hero Section */
.hero-section .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: var(--spacing-xxxl);
  min-height: calc(100vh - var(--header-height));
}

.hero-content .subtitle {
  font-size: 1.2rem;
  margin-top: var(--spacing-l);
  margin-bottom: var(--spacing-xl);
}

.hero-actions {
  display: flex;
  gap: var(--spacing-m);
  margin-top: var(--spacing-xxl);
}

.hero-image img {
  border-radius: var(--radius-l);
  box-shadow: 0 10px 30px var(--color-shadow);
  transform: perspective(1000px) rotateY(-10deg);
  transition: transform var(--transition-normal);
}

.hero-image:hover img {
  transform: perspective(1000px) rotateY(0deg);
}

/* Stories Section */
.stories-section {
  background-color: var(--color-surface-secondary);
}

.stories-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-xl);
}

.story-card {
  background-color: var(--color-surface);
  padding: var(--spacing-xl);
  border-radius: var(--radius-l);
  border: 1px solid var(--color-border);
  transition: transform var(--transition-normal),
    box-shadow var(--transition-normal);
  display: flex;
  flex-direction: column;
}

.story-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 8px 25px var(--color-shadow);
}

.story-icon {
  margin-bottom: var(--spacing-l);
}

.story-icon svg {
  width: 40px;
  height: 40px;
  color: var(--color-accent);
}

.story-card h3 {
  margin-bottom: var(--spacing-m);
}

.story-card p {
  font-size: 0.95rem;
  flex-grow: 1;
}

/* In-depth Text Section */
.in-depth-text-section .full-width-image {
  width: 100%;
  border-radius: var(--radius-l);
  margin: var(--spacing-xxl) 0;
}

.in-depth-text-section h3 {
  margin-top: var(--spacing-xxl);
}

/* Interactive Exercise Section */
.interactive-exercise-section {
  background-color: var(--color-surface);
}

.exercise-form .form-group {
  margin-bottom: var(--spacing-xl);
}

.exercise-form label {
  display: block;
  font-weight: 600;
  margin-bottom: var(--spacing-s);
}

.exercise-form textarea {
  width: 100%;
  padding: var(--spacing-m);
  border-radius: var(--radius-m);
  border: 1px solid var(--color-border);
  background-color: var(--color-surface-secondary);
  color: var(--color-text-primary);
  font-family: var(--font-primary);
  font-size: 1rem;
  resize: vertical;
  transition: border-color var(--transition-fast),
    box-shadow var(--transition-fast);
}

.exercise-form textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--color-accent) 25%, transparent);
}

/* Guide Section (Accordion) */
.guide-section {
  background-color: var(--color-surface-secondary);
}

.accordion {
  max-width: 900px;
  margin: 0 auto;
}

.accordion-item {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-m);
  margin-bottom: var(--spacing-m);
  overflow: hidden;
}

.accordion-item:last-child {
  margin-bottom: 0;
}

.accordion-header {
  width: 100%;
  padding: var(--spacing-l);
  background-color: transparent;
  border: none;
  text-align: left;
  font-size: 1.2rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--color-text-primary);
}

.accordion-header svg {
  transition: transform var(--transition-normal);
  flex-shrink: 0;
}

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

.accordion-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-normal),
    padding var(--transition-normal);
}

.accordion-content p {
  padding: 0 var(--spacing-l) var(--spacing-l);
  margin: 0;
  font-size: 1rem;
}

/* Testimonials Section */
.testimonials-section {
  background-color: var(--color-surface);
}

.testimonial-item blockquote {
  border: none;
  padding: 0;
  margin: 0;
  text-align: center;
}

.testimonial-item p {
  font-size: clamp(1.2rem, 2vw, 1.5rem);
  font-family: var(--font-serif);
  line-height: 1.5;
  margin-bottom: var(--spacing-l);
}

.testimonial-item footer {
  font-family: var(--font-primary);
  font-weight: 600;
}

/* Email Signup Section */
.email-signup-section {
  background-color: var(--color-surface-secondary);
}

.email-signup-section .container-narrow {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  align-items: center;
  gap: var(--spacing-xxl);
  background-color: var(--color-surface);
  padding: var(--spacing-xxxl);
  border-radius: var(--radius-l);
  border: 1px solid var(--color-border);
}

.email-signup-image img {
  border-radius: var(--radius-m);
}

.email-signup-content h2 {
  margin-bottom: var(--spacing-m);
}

.email-form {
  margin-top: var(--spacing-xl);
}

.email-form .form-row {
  display: flex;
  gap: var(--spacing-s);
}

.email-form input[type="email"] {
  flex-grow: 1;
  padding: var(--spacing-m);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-m);
  font-size: 1rem;
  background-color: var(--color-bg);
  color: var(--color-text-primary);
  transition: border-color var(--transition-fast),
    box-shadow var(--transition-fast);
}

.email-form input[type="email"]:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--color-accent) 25%, transparent);
}

.form-privacy {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-top: var(--spacing-s);
}

#thank-you-message {
  padding: var(--spacing-l);
  background-color: color-mix(in srgb, var(--color-accent) 10%, transparent);
  border-radius: var(--radius-m);
  border: 1px solid color-mix(in srgb, var(--color-accent) 20%, transparent);
  margin-top: var(--spacing-xl);
}

#thank-you-message h3 {
  color: var(--color-accent);
}

/* Main Footer */
.main-footer {
  background-color: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: var(--spacing-xxxl) 0;
  color: var(--color-text-secondary);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: var(--spacing-xxl);
  margin-bottom: var(--spacing-xxxl);
}

.footer-column h4 {
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-l);
  font-size: 1.1rem;
}

.footer-column.about p {
  font-size: 0.9rem;
}

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

.footer-column.links li {
  margin-bottom: var(--spacing-s);
}

.footer-column.links a {
  color: var(--color-text-secondary);
}

.footer-column.links a:hover {
  color: var(--color-accent);
  text-decoration: none;
}

.footer-column.contact a {
  display: block;
  margin-top: var(--spacing-s);
  color: var(--color-text-secondary);
}

.footer-bottom {
  border-top: 1px solid var(--color-border);
  padding-top: var(--spacing-xl);
  text-align: center;
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

/* Cookie Consent Banner */
#cookie-consent-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  background-color: var(--color-surface);
  color: var(--color-text-primary);
  padding: var(--spacing-l);
  box-shadow: 0 -5px 20px var(--color-shadow);
  z-index: 2000;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--spacing-l);
  transform: translateY(100%);
  animation: slide-up 0.5s forwards ease-out;
}

@keyframes slide-up {
  to {
    transform: translateY(0);
  }
}

#cookie-consent-banner p {
  margin: 0;
}

#cookie-consent-banner a {
  font-weight: 600;
}

#cookie-accept-btn {
  padding: var(--spacing-s) var(--spacing-l);
  background-color: var(--color-accent);
  color: var(--color-accent-text);
  border: none;
  border-radius: var(--radius-s);
  cursor: pointer;
  flex-shrink: 0;
}

/* Scroll Animations */
.scroll-animate {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

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

/* Responsiveness */
@media (max-width: 1024px) {
  .hero-section .container {
    grid-template-columns: 1fr;
    text-align: center;
    padding-top: var(--spacing-xxl);
    padding-bottom: var(--spacing-xxl);
    min-height: auto;
  }

  .hero-content {
    order: 2;
  }

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

  .hero-image img {
    transform: perspective(0) rotateY(0);
    margin: 0 auto;
  }

  .hero-actions {
    justify-content: center;
  }

  .email-signup-section .container-narrow {
    grid-template-columns: 1fr;
  }

  .email-signup-image {
    display: none;
  }

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

  .footer-column.about {
    grid-column: 1 / -1;
  }
}

@media (max-width: 768px) {
  :root {
    --header-height: 70px;
  }

  h1 {
    font-size: 2.2rem;
  }

  h2 {
    font-size: 1.8rem;
  }

  .main-nav {
    display: none;
  }

  .main-header .cta-button {
    padding: var(--spacing-s) var(--spacing-m);
    font-size: 0.9rem;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .footer-column.contact address,
  .footer-column.contact a {
    margin: var(--spacing-s) auto;
  }

  #cookie-consent-banner {
    flex-direction: column;
    text-align: center;
    gap: var(--spacing-m);
    padding: var(--spacing-m);
  }
}

@media (max-width: 480px) {
  section {
    padding: var(--spacing-xxl) 0;
  }

  .container,
  .container-narrow {
    padding: 0 var(--spacing-m);
  }

  .hero-actions {
    flex-direction: column;
  }

  .email-signup-section .container-narrow {
    padding: var(--spacing-xl);
  }

  .email-form .form-row {
    flex-direction: column;
  }

  .email-form button {
    width: 100%;
  }
}