/* =============================================================================
   SECTION 1 — Font Faces and Custom Properties
   ============================================================================= */

@font-face {
  font-family: 'Bitter';
  src: url('/assets/fonts/bitter-regular.woff2') format('woff2');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Bitter';
  src: url('/assets/fonts/bitter-bold.woff2') format('woff2');
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Roboto';
  src: url('/assets/fonts/roboto-regular.woff2') format('woff2');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Roboto';
  src: url('/assets/fonts/roboto-bold.woff2') format('woff2');
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Roboto';
  src: url('/assets/fonts/roboto-italic.woff2') format('woff2');
  font-weight: 400;
  font-style: italic;
  font-display: swap;
}

@font-face {
  font-family: 'Roboto';
  src: url('/assets/fonts/roboto-extrabold.woff2') format('woff2');
  font-weight: 800;
  font-style: normal;
  font-display: swap;
}

:root {
  /* Brand colors */
  --color-primary: #00D8FF;
  --color-secondary: #129AB2;
  --color-accent: #66D970;
  --color-accent-2: #2de0ff; /* #00D8FF + 15% tint */
  --color-link: #0097b2;
  --color-link-hover: #007a91;

  /* Light theme (default) */
  --bg-primary: #ffffff;
  --bg-secondary: #f7f8fa;
  --bg-tertiary: #eef0f4;
  --text-primary: #1a1a2e;
  --text-secondary: #4a4a68;
  --text-muted: #8888a0;
  --border-color: #e2e4e8;
  --card-bg: #ffffff;
  --card-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
  --nav-bg: #ffffff;
  --announcement-bg: #0a7a8f;
  --announcement-text: #ffffff;
  --code-bg: #f0f2f5;

  /* Typography */
  --font-heading: 'Bitter', Georgia, 'Times New Roman', serif;
  --font-body: 'Roboto', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-size-base: 1rem;
  --font-size-sm: 0.875rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.5rem;
  --font-size-2xl: 2rem;
  --font-size-3xl: 2.5rem;
  --font-size-4xl: 3rem;
  --line-height-tight: 1.2;
  --line-height-normal: 1.6;

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;

  /* Layout */
  --container-max: 1200px;
  --container-narrow: 800px;
  --container-padding: 1.5rem;
  --border-radius: 8px;
  --border-radius-sm: 4px;
  --border-radius-lg: 12px;
}


/* =============================================================================
   SECTION 2 — Reset and Base Styles
   ============================================================================= */

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

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

body {
  font-family: var(--font-body);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--text-primary);
  background-color: var(--bg-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

/* Underline links inside body content so they're distinguishable without color alone */
.article-content a:not(.btn),
.container-narrow p a:not(.btn),
.section p a:not(.btn),
main p a:not(.btn),
main li a:not(.btn) {
  text-decoration: underline;
  text-decoration-color: var(--color-link);
  text-underline-offset: 2px;
}

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

ul, ol {
  padding-left: var(--space-lg);
}


/* =============================================================================
   SECTION 3 — Typography
   ============================================================================= */

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: var(--line-height-tight);
  color: var(--text-primary);
  margin-bottom: var(--space-md);
}

h1 { font-size: var(--font-size-4xl); }
h2 { font-size: var(--font-size-3xl); }
h3 { font-size: var(--font-size-2xl); }
h4 { font-size: var(--font-size-xl); }
h5 { font-size: var(--font-size-lg); }
h6 { font-size: var(--font-size-base); }

p {
  margin-bottom: var(--space-md);
  color: var(--text-secondary);
}

strong { font-weight: 700; }
em { font-style: italic; }

blockquote {
  border-left: 4px solid var(--color-primary);
  padding: var(--space-md) var(--space-lg);
  margin: var(--space-xl) 0;
  background: var(--bg-secondary);
  border-radius: 0 var(--border-radius-sm) var(--border-radius-sm) 0;
}

blockquote p {
  margin-bottom: 0;
  font-style: italic;
}

code {
  font-family: 'Courier New', monospace;
  background: var(--code-bg);
  padding: 0.15em 0.4em;
  border-radius: var(--border-radius-sm);
  font-size: 0.9em;
}

pre {
  background: var(--code-bg);
  padding: var(--space-lg);
  border-radius: var(--border-radius);
  overflow-x: auto;
  margin: var(--space-xl) 0;
}

pre code {
  background: none;
  padding: 0;
}

@media (max-width: 768px) {
  h1 { font-size: var(--font-size-3xl); }
  h2 { font-size: var(--font-size-2xl); }
  h3 { font-size: var(--font-size-xl); }
}


/* =============================================================================
   SECTION 4 — Layout
   ============================================================================= */

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

.container-narrow {
  max-width: var(--container-narrow);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

.section {
  padding: var(--space-4xl) 0;
}

.section-alt {
  padding: var(--space-4xl) 0;
  background: var(--bg-secondary);
}

.grid {
  display: grid;
  gap: var(--space-xl);
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 768px) {
  .grid-2, .grid-3, .grid-4 {
    grid-template-columns: 1fr;
  }

  .section, .section-alt {
    padding: var(--space-3xl) 0;
  }
}

@media (min-width: 769px) and (max-width: 1024px) {
  .grid-3, .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

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


/* =============================================================================
   SECTION 5 — Components
   ============================================================================= */

/* --- Announcement Bar --- */

.announcement-bar {
  background: var(--announcement-bg);
  color: var(--announcement-text);
  text-align: center;
  padding: var(--space-sm) var(--space-md);
  font-size: var(--font-size-sm);
  font-weight: 600;
}

/* --- Navigation --- */

.site-nav {
  background: var(--nav-bg);
  border-bottom: 1px solid var(--border-color);
  padding: var(--space-md) 0;
  position: sticky;
  top: 0;
  z-index: 100;
}

.site-nav .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: var(--container-max);
  padding: 0 var(--container-padding);
}

.site-nav__logo {
  font-family: var(--font-heading);
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-primary);
  text-decoration: none;
}

.site-nav__logo:hover {
  text-decoration: none;
  color: var(--color-primary);
}

.site-nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  list-style: none;
  padding: 0;
  margin: 0;
}

.site-nav__links a {
  color: var(--text-primary);
  font-weight: 800;
  font-size: var(--font-size-base);
  text-decoration: none;
  transition: color 0.2s;
}

.site-nav__links a:hover {
  color: var(--color-link);
  text-decoration: none;
}

.site-nav__links .btn:hover,
.site-nav__links .btn-primary:hover {
  color: #ffffff;
}

/* Toggle button — hidden on desktop */
.site-nav__toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  cursor: pointer;
  padding: 8px;
  -webkit-tap-highlight-color: transparent;
}

/* Single SVG icon — JS swaps line coords between menu/close on click */

/* --- Nav Dropdowns (desktop) --- */

.nav-dropdown {
  position: relative;
  padding-bottom: var(--space-md);
  margin-bottom: calc(-1 * var(--space-md));
}

.nav-dropdown > a::after {
  content: ' \25BE';
  font-size: 0.7em;
  opacity: 0.6;
}

.nav-dropdown__menu {
  display: none;
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  background: var(--nav-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
  padding: var(--space-sm) 0;
  min-width: 180px;
  z-index: 200;
  list-style: none;
  margin: 0;
}

.nav-dropdown:hover .nav-dropdown__menu {
  display: block;
}

.nav-dropdown__menu li {
  padding: 0;
}

.nav-dropdown__menu a {
  display: block;
  padding: var(--space-sm) var(--space-lg);
  white-space: nowrap;
}

.nav-dropdown__menu a:hover {
  background: var(--bg-secondary);
}

/* =============================================================================
   Mobile nav — max-width: 1024px
   ============================================================================= */

@media (max-width: 1024px) {

  /* Shrink announcement bar */
  .announcement-bar {
    font-size: 0.75rem;
    padding: var(--space-xs) var(--space-sm);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  /* Show hamburger */
  .site-nav__toggle {
    display: block;
    position: relative;
    z-index: 101;
  }

  /* When menu is open, pin toggle above the fixed overlay */
  .site-nav.nav-open .site-nav__toggle {
    position: fixed;
    top: var(--space-md);
    right: var(--container-padding);
    z-index: 200;
  }

  /* Full-screen overlay menu */
  .site-nav__links {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--nav-bg);
    flex-direction: column;
    align-items: flex-end;
    padding: 5rem var(--container-padding) var(--space-xl);
    gap: var(--space-sm);
    z-index: 99;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
  }

  .site-nav__links.open {
    display: flex;
    animation: navFadeIn 0.2s ease-out;
  }

  /* Main nav items — styled as pill buttons, right-aligned */
  .site-nav__links > li {
    width: 100%;
    text-align: right;
    border-bottom: none;
  }

  .site-nav__links > li > a {
    display: block;
    padding: 0.75rem 1.25rem;
    font-size: var(--font-size-xl);
    font-weight: 700;
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
    transition: background 0.15s ease;
  }

  .site-nav__links > li > a:active {
    background: var(--border-color);
  }

  /* Dropdown parent items — no arrow needed, sub-links always visible */
  .nav-dropdown {
    padding-bottom: 0;
    margin-bottom: 0;
  }

  .nav-dropdown > a::after {
    display: none;
  }

  /* Sub-links — always visible, right-aligned, lighter style */
  .nav-dropdown__menu {
    display: block;
    position: static;
    border: none;
    box-shadow: none;
    padding: 0;
    margin-top: var(--space-xs);
    background: transparent;
    transform: none;
    min-width: 0;
    text-align: right;
  }

  .nav-dropdown:hover .nav-dropdown__menu {
    display: block;
  }

  .nav-dropdown__menu li {
    margin-bottom: var(--space-xs);
  }

  .nav-dropdown__menu li:last-child {
    margin-bottom: 0;
  }

  .nav-dropdown__menu a {
    display: block;
    padding: 0.5rem 1.25rem;
    font-weight: 600;
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    white-space: normal;
    border-radius: var(--border-radius-sm);
    border-right: 3px solid var(--color-primary);
    transition: background 0.15s ease, color 0.15s ease;
  }

  .nav-dropdown__menu a:hover,
  .nav-dropdown__menu a:active {
    background: var(--bg-secondary);
    color: var(--color-link);
  }

  /* CTA phone button — pinned at bottom */
  .site-nav__links > li.nav-cta {
    margin-top: auto;
    padding-top: var(--space-md);
  }

  .site-nav__links > li.nav-cta > .btn {
    display: block;
    text-align: center;
    padding: 1rem var(--space-lg);
    font-size: var(--font-size-lg);
    font-weight: 700;
    border-radius: var(--border-radius);
  }
}

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

/* --- Hero --- */

.hero {
  padding: var(--space-4xl) 0;
  text-align: center;
}

.hero h1 {
  margin-bottom: var(--space-lg);
}

.hero p {
  font-size: var(--font-size-lg);
  max-width: 600px;
  margin: 0 auto var(--space-xl);
}

/* --- Buttons --- */

.btn {
  display: inline-block;
  padding: var(--space-sm) var(--space-xl);
  border-radius: var(--border-radius-sm);
  font-weight: 600;
  font-size: var(--font-size-base);
  text-decoration: none;
  transition: background 0.2s, color 0.2s, transform 0.15s, box-shadow 0.2s;
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: var(--color-primary);
  color: #0a1628;
}

.btn-primary:hover {
  background: var(--color-secondary);
  color: #ffffff;
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(0, 216, 255, 0.4);
  text-decoration: none;
}

.link-btn {
  background: none;
  border: none;
  padding: 0;
  font: inherit;
  color: var(--color-link);
  text-decoration: underline;
  cursor: pointer;
  display: inline;
}

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

.btn-secondary {
  background: transparent;
  color: var(--text-primary);
  border: 2px solid var(--color-link);
}

.btn-secondary:hover {
  background: var(--color-secondary);
  color: #ffffff;
  border-color: var(--color-secondary);
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(0, 216, 255, 0.4);
  text-decoration: none;
}

/* --- Cards --- */

.card {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: var(--space-xl);
  box-shadow: var(--card-shadow);
  transition: box-shadow 0.2s, transform 0.2s;
}

.card:hover {
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
  transform: translateY(-2px);
}

.card h3 {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-sm);
}

.card p {
  margin-bottom: 0;
}

.card__icon {
  font-size: 2rem;
  margin-bottom: var(--space-md);
  color: var(--color-primary);
}

/* --- Testimonial --- */

.testimonial {
  background: var(--bg-secondary);
  border-radius: var(--border-radius);
  padding: var(--space-xl);
  border-left: 4px solid var(--color-accent);
}

.testimonial__quote {
  font-style: italic;
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-md);
  color: var(--text-primary);
}

.testimonial__author {
  font-weight: 700;
  color: var(--text-secondary);
}

/* --- FAQ --- */

.faq-item {
  border-bottom: 1px solid var(--border-color);
  padding: var(--space-lg) 0;
}

.faq-item summary {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: var(--font-size-lg);
  cursor: pointer;
  color: var(--text-primary);
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.faq-item summary::after {
  content: '+';
  font-size: var(--font-size-xl);
  color: var(--color-primary);
  transition: transform 0.2s;
}

.faq-item[open] summary::after {
  content: '−';
}

.faq-item .faq-answer {
  padding-top: var(--space-md);
  color: var(--text-secondary);
}

/* --- Blog Card --- */

.blog-card {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  overflow: hidden;
  transition: box-shadow 0.2s, transform 0.2s;
}

.blog-card:hover {
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
  transform: translateY(-2px);
}

.blog-card__image {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.blog-card__body {
  padding: var(--space-lg);
}

.blog-card__meta {
  font-size: var(--font-size-sm);
  color: var(--text-muted);
  margin-bottom: var(--space-sm);
}

.blog-card__title {
  font-family: var(--font-heading);
  font-size: var(--font-size-lg);
  font-weight: 700;
  margin-bottom: var(--space-sm);
}

.blog-card__title a {
  color: var(--text-primary);
}

.blog-card__title a:hover {
  color: var(--color-link);
  text-decoration: none;
}

.blog-card__excerpt {
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
}

/* --- Podcast Card --- */

.podcast-card {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: var(--space-lg);
  display: flex;
  gap: var(--space-lg);
  align-items: center;
  transition: box-shadow 0.2s;
}

.podcast-card:hover {
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
}

.podcast-card__number {
  font-family: var(--font-heading);
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--color-primary);
  min-width: 60px;
  text-align: center;
}

.podcast-card__body {
  flex: 1;
}

.podcast-card__title {
  font-family: var(--font-heading);
  font-weight: 700;
  margin-bottom: var(--space-xs);
}

.podcast-card__title a {
  color: var(--text-primary);
}

.podcast-card__title a:hover {
  color: var(--color-link);
  text-decoration: none;
}

.podcast-card__meta {
  font-size: var(--font-size-sm);
  color: var(--text-muted);
}

/* --- Audio Player --- */

.audio-player {
  width: 100%;
  margin: var(--space-lg) 0;
  border-radius: var(--border-radius-sm);
}

audio {
  width: 100%;
}

/* --- CTA Section --- */

.cta-section {
  background: var(--color-secondary);
  color: #ffffff;
  text-align: center;
  padding: var(--space-4xl) 0;
}

.cta-section h2 {
  color: #ffffff;
}

.cta-section p {
  color: rgba(255, 255, 255, 0.85);
  font-size: var(--font-size-lg);
}

.cta-section .btn-primary {
  background: #ffffff;
  color: var(--color-secondary);
}

.cta-section .btn-primary:hover {
  background: var(--bg-tertiary);
}

.cta-section .btn-secondary {
  color: #ffffff;
  border-color: #ffffff;
  background: transparent;
}

.cta-section .btn-secondary:hover {
  background: rgba(255, 255, 255, 0.15);
  color: #ffffff;
  border-color: #ffffff;
}

/* --- Footer --- */

.site-footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: var(--space-3xl) 0 var(--space-xl);
}

.site-footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-xl);
  margin-bottom: var(--space-2xl);
}

@media (max-width: 768px) {
  .site-footer__grid {
    grid-template-columns: 1fr;
  }
}

.footer-heading {
  font-family: var(--font-heading);
  font-size: var(--font-size-base);
  font-weight: 700;
  margin-bottom: var(--space-md);
  color: var(--text-primary);
}

.site-footer p,
.site-footer a {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

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

.site-footer li {
  margin-bottom: var(--space-sm);
}

.site-footer__bottom {
  border-top: 1px solid var(--border-color);
  padding-top: var(--space-lg);
  text-align: center;
  font-size: var(--font-size-sm);
  color: var(--text-muted);
}

/* --- Pagination --- */

.pagination {
  display: flex;
  justify-content: center;
  gap: var(--space-sm);
  padding: var(--space-xl) 0;
}

.pagination a,
.pagination span {
  padding: var(--space-sm) var(--space-md);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-sm);
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  text-decoration: none;
}

.pagination a:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  text-decoration: none;
}

.pagination .active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #0a1628;
  font-weight: 700;
}

/* --- Partner Logos --- */

.partner-logos {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: var(--space-xl);
  padding: var(--space-lg) 0;
}

.partner-logos img {
  max-height: 48px;
  opacity: 0.6;
  transition: opacity 0.2s;
  filter: grayscale(100%);
}

.partner-logos img:hover {
  opacity: 1;
  filter: none;
}

/* --- Article Content --- */

.article-content {
  max-width: var(--container-max);
  margin: 0 auto;
}

.article-content h2 {
  margin-top: var(--space-3xl);
  margin-bottom: var(--space-md);
}

.article-content h3 {
  margin-top: var(--space-2xl);
  margin-bottom: var(--space-md);
}

.article-content p {
  margin-bottom: var(--space-lg);
}

.article-content ul,
.article-content ol {
  margin-bottom: var(--space-lg);
}

.article-content li {
  margin-bottom: var(--space-sm);
}

.article-content img {
  border-radius: var(--border-radius);
  margin: var(--space-xl) 0;
}

/* --- Article Meta --- */

.article-meta {
  font-size: var(--font-size-sm);
  color: var(--text-muted);
  margin-bottom: var(--space-xl);
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid var(--border-color);
}

.article-meta span + span::before {
  content: '·';
  margin: 0 var(--space-sm);
}