/* ==========================================================================
   rcoelho.dev — Design System
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=DM+Serif+Display:ital@0;1&family=Open+Sans:wght@400;600;700&display=swap');

/* --------------------------------------------------------------------------
   1. CSS Custom Properties (Design Tokens)
   -------------------------------------------------------------------------- */

:root {
  /* Colors — Primary */
  --color-primary: #CC3300;
  --color-primary-hover: #E53D0C;
  --color-text-dark: #1b1f29;
  --color-text-muted: #4c5262;
  --color-bg-white: #ffffff;
  --color-bg-light: #f9fafa;
  --color-border: #dcdfe5;

  /* Colors — Support */
  --color-overlay: rgba(27, 31, 41, 0.8);
  --color-shadow-subtle: rgba(0, 0, 0, 0.05);
  --color-shadow-medium: rgba(0, 0, 0, 0.1);
  --color-shadow-strong: rgba(0, 0, 0, 0.2);

  /* Typography */
  --font-heading: 'DM Serif Display', serif;
  --font-body: 'Open Sans', sans-serif;

  /* Spacing */
  --spacing-xs: 8px;
  --spacing-sm: 16px;
  --spacing-md: 24px;
  --spacing-lg: 48px;
  --spacing-xl: 96px;
  --spacing-2xl: 128px;

  /* Layout */
  --container-max: 1200px;
  --container-narrow: 750px;

  /* Transitions */
  --transition-base: all 0.2s ease-in-out;
  --transition-transform: transform 0.2s ease-in;
  --transition-opacity: opacity 0.25s ease-out;
}

/* --------------------------------------------------------------------------
   2. Reset / Normalize
   -------------------------------------------------------------------------- */

*, *::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: 1.0625rem;
  font-weight: 400;
  line-height: 1.8;
  color: var(--color-text-dark);
  background-color: var(--color-bg-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: var(--transition-base);
}

a:hover {
  color: var(--color-primary-hover);
}

ul, ol {
  list-style: none;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

input, textarea {
  font-family: inherit;
}

/* --------------------------------------------------------------------------
   3. Typography
   -------------------------------------------------------------------------- */

h1, h2, h3, h4 {
  font-family: var(--font-heading);
  font-weight: 400;
  color: var(--color-text-dark);
}

h5 {
  font-family: var(--font-body);
  font-weight: 600;
  color: var(--color-text-dark);
}

h1 {
  font-size: 5rem;
  line-height: 1.2;
}

h2 {
  font-size: 3rem;
  line-height: 1.3;
}

h3 {
  font-size: 2rem;
  line-height: 1.3;
}

h4 {
  font-size: 1.5rem;
  line-height: 1.4;
}

h5 {
  font-size: 1.0625rem;
  line-height: 1.5;
}

small, .text-small {
  font-size: 0.8125rem;
  line-height: 1.6;
}

blockquote {
  font-family: var(--font-heading);
  font-style: italic;
  font-size: 1.5rem;
  line-height: 1.6;
  color: var(--color-text-dark);
}

/* --------------------------------------------------------------------------
   4. Layout & Container
   -------------------------------------------------------------------------- */

.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.container--narrow {
  max-width: var(--container-narrow);
}

.section {
  padding: var(--spacing-2xl) 0;
}

.section--light {
  background-color: var(--color-bg-light);
}

.section--white {
  background-color: var(--color-bg-white);
}

/* --------------------------------------------------------------------------
   5. Buttons
   -------------------------------------------------------------------------- */

.btn {
  display: inline-block;
  padding: 15px 30px;
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 2px;
  border-radius: 0;
  transition: var(--transition-base);
  text-align: center;
  line-height: 1;
}

.btn--primary {
  background-color: var(--color-primary);
  color: #ffffff;
  border: 2px solid var(--color-primary);
}

.btn--primary:hover {
  background-color: var(--color-primary-hover);
  border-color: var(--color-primary-hover);
  color: #ffffff;
}

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

.btn--outline:hover {
  background-color: var(--color-primary);
  color: #ffffff;
}

.btn--white {
  background-color: transparent;
  color: #ffffff;
  border: 2px solid #ffffff;
}

.btn--white:hover {
  background-color: #ffffff;
  color: var(--color-text-dark);
}

/* Arrow Link */
.arrow-link {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--color-primary);
  transition: var(--transition-base);
}

.arrow-link svg {
  width: 18px;
  height: 18px;
  transition: var(--transition-transform);
}

.arrow-link:hover {
  color: var(--color-primary-hover);
}

.arrow-link:hover svg {
  transform: translateX(4px);
}

/* --------------------------------------------------------------------------
   6. Forms
   -------------------------------------------------------------------------- */

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

.form-input,
.form-textarea {
  width: 100%;
  padding: 14px 18px;
  font-size: 15px;
  font-family: var(--font-body);
  color: var(--color-text-dark);
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: 0;
  transition: var(--transition-base);
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-text-dark);
}

.form-textarea {
  min-height: 150px;
  resize: vertical;
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--color-text-muted);
}

/* --------------------------------------------------------------------------
   7. Cards
   -------------------------------------------------------------------------- */

.card {
  background: var(--color-bg-white);
  padding: var(--spacing-md);
  border-radius: 0;
  transition: var(--transition-base);
}

.card:hover {
  box-shadow: 0 0 2rem 0 var(--color-shadow-medium);
}

.card__image {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  margin-bottom: var(--spacing-sm);
}

.card__category {
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--color-primary);
  margin-bottom: var(--spacing-xs);
}

.card__date {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-xs);
}

.card__title {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  line-height: 1.4;
  margin-bottom: var(--spacing-xs);
}

.card__description {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-bottom: var(--spacing-sm);
}

/* --------------------------------------------------------------------------
   8. Grid
   -------------------------------------------------------------------------- */

.grid {
  display: grid;
  gap: var(--spacing-md);
}

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

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

/* --------------------------------------------------------------------------
   9. Header
   -------------------------------------------------------------------------- */

.site-header {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: var(--spacing-md) 0;
  transition: var(--transition-base);
}

.site-header.is-sticky {
  position: fixed;
  background-color: var(--color-bg-white);
  box-shadow: 0 2px 10px var(--color-shadow-subtle);
}

.site-header.is-sticky .header__logo,
.site-header.is-sticky .nav__link,
.site-header.is-sticky .social-icon {
  color: var(--color-text-dark);
}

.site-header.is-sticky .social-icon svg {
  stroke: var(--color-text-dark);
}

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

.header__logo {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  color: #ffffff;
  text-decoration: none;
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  line-height: 0;
}

.header__logo img {
  height: 40px;
  width: auto;
  display: block;
  filter: brightness(0) invert(1);
  transition: filter 0.3s ease;
}

.site-header.is-sticky .header__logo img {
  filter: none;
}

.header__logo:hover {
  color: #ffffff;
}

.site-header.is-sticky .header__logo:hover {
  color: var(--color-primary);
}

/* Navigation */
.nav {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.nav__link {
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 400;
  color: #ffffff;
  text-decoration: none;
  transition: var(--transition-base);
}

.nav__link:hover,
.nav__link.is-active {
  color: var(--color-primary);
}

.site-header.is-sticky .nav__link:hover,
.site-header.is-sticky .nav__link.is-active {
  color: var(--color-primary);
}

/* Header Right */
.header__right {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

/* Social Icons */
.social-icons {
  display: flex;
  align-items: center;
  gap: 12px;
}

.social-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
}

.social-icon svg {
  width: 20px;
  height: 20px;
  stroke: #ffffff;
  fill: none;
  transition: var(--transition-base);
}

.social-icon:hover svg {
  stroke: var(--color-primary);
}

.site-header.is-sticky .social-icon:hover svg {
  stroke: var(--color-primary);
}

/* Language Selector */
.lang-selector {
  position: relative;
}

.lang-trigger {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 4px 8px;
  font-size: 13px;
  font-weight: 600;
  color: #ffffff;
  cursor: pointer;
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 4px;
  transition: var(--transition-base);
}

.site-header.is-sticky .lang-trigger {
  color: var(--color-text-dark);
  border-color: var(--color-border);
}

.lang-trigger__flag {
  width: 20px;
  height: 14px;
}

.lang-trigger__chevron {
  width: 10px;
  height: 10px;
  transition: var(--transition-transform);
}

.lang-selector.is-open .lang-trigger__chevron {
  transform: rotate(180deg);
}

.lang-menu {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  min-width: 180px;
  background: var(--color-bg-white);
  border: 1px solid var(--color-border);
  box-shadow: 6px 6px 9px var(--color-shadow-strong);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: var(--transition-base);
  z-index: 200;
}

.lang-selector.is-open .lang-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.lang-menu__item {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: 10px 16px;
  font-size: 14px;
  color: var(--color-text-dark);
  cursor: pointer;
  transition: var(--transition-base);
}

.lang-menu__item:hover {
  background-color: var(--color-bg-light);
  color: var(--color-primary);
}

.lang-menu__item.is-active {
  color: var(--color-primary);
  font-weight: 600;
}

.lang-menu__item.is-disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.lang-menu__flag {
  width: 20px;
  height: 14px;
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 28px;
  height: 28px;
  cursor: pointer;
  z-index: 201;
}

.hamburger__line {
  display: block;
  width: 100%;
  height: 2px;
  background-color: #ffffff;
  transition: var(--transition-base);
}

.site-header.is-sticky .hamburger__line {
  background-color: var(--color-text-dark);
}

.hamburger.is-active .hamburger__line:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.hamburger.is-active .hamburger__line:nth-child(2) {
  opacity: 0;
}

.hamburger.is-active .hamburger__line:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile Drawer */
.drawer-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: var(--color-overlay);
  z-index: 150;
  opacity: 0;
  transition: var(--transition-opacity);
}

.drawer-overlay.is-visible {
  display: block;
  opacity: 1;
}

.mobile-drawer {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: 90vw;
  max-width: 400px;
  background: var(--color-bg-white);
  z-index: 160;
  transform: translateX(100%);
  transition: var(--transition-transform);
  padding: var(--spacing-lg) var(--spacing-md);
  overflow-y: auto;
}

.mobile-drawer.is-open {
  transform: translateX(0);
}

.mobile-drawer .nav {
  flex-direction: column;
  align-items: flex-start;
  gap: 0;
}

.mobile-drawer .nav__link {
  display: block;
  width: 100%;
  padding: var(--spacing-sm) 0;
  color: var(--color-text-dark);
  font-size: 1.125rem;
  border-bottom: 1px solid var(--color-border);
}

.mobile-drawer .lang-selector {
  margin-bottom: var(--spacing-md);
  padding-bottom: var(--spacing-md);
  border-bottom: 1px solid var(--color-border);
}

.mobile-drawer .lang-trigger {
  color: var(--color-text-dark);
  border-color: var(--color-border);
}

/* --------------------------------------------------------------------------
   10. Hero
   -------------------------------------------------------------------------- */

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background-color: var(--color-text-dark);
  background-image: url('../img/plateia_final.jpg');
  background-size: cover;
  background-position: center;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--color-overlay);
  z-index: 1;
}

.hero__content {
  position: relative;
  z-index: 2;
  max-width: 800px;
  padding: 0 var(--spacing-md);
}

.hero__title {
  color: #ffffff;
  margin-bottom: var(--spacing-sm);
}

.hero__subtitle {
  font-family: var(--font-body);
  font-size: 1.125rem;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: var(--spacing-lg);
  letter-spacing: 1px;
}

/* --------------------------------------------------------------------------
   11. About Section
   -------------------------------------------------------------------------- */

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

.about__image {
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
}

.about__content h2 {
  margin-bottom: var(--spacing-md);
}

.about__content p {
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-md);
}

/* --------------------------------------------------------------------------
   12. Featured Keynote
   -------------------------------------------------------------------------- */

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

.featured__media {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  background-color: var(--color-text-dark);
}

.featured__video {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  background-color: var(--color-text-dark);
  overflow: hidden;
}

.featured__video iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

.featured__meta {
  font-family: var(--font-body);
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-sm);
  letter-spacing: 0.5px;
}

.featured__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

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

.featured__title {
  font-family: var(--font-heading);
  font-size: 1.75rem;
  line-height: 1.25;
  margin-bottom: var(--spacing-sm);
  color: var(--color-text-dark);
}

.featured__content p {
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-md);
}

/* --------------------------------------------------------------------------
   13. Services Section
   -------------------------------------------------------------------------- */

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

.service-card {
  padding: var(--spacing-lg) var(--spacing-md);
  text-align: center;
  border: 1px solid var(--color-border);
  transition: var(--transition-base);
}

.service-card:hover {
  box-shadow: 0 0 2rem 0 var(--color-shadow-medium);
  border-color: transparent;
}

.service-card__icon {
  width: 48px;
  height: 48px;
  margin: 0 auto var(--spacing-md);
}

.service-card__icon svg {
  width: 100%;
  height: 100%;
  stroke: var(--color-primary);
  fill: none;
}

.service-card h4 {
  margin-bottom: var(--spacing-sm);
}

.service-card p {
  color: var(--color-text-muted);
  font-size: 0.9375rem;
  margin-bottom: var(--spacing-md);
}

/* --------------------------------------------------------------------------
   14. Testimonial
   -------------------------------------------------------------------------- */

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

.testimonials-carousel {
  position: relative;
  max-width: 760px;
  margin: 0 auto;
  padding: 0 56px;
}

.testimonials-viewport {
  overflow: hidden;
}

.testimonials-track {
  display: flex;
  transition: transform 0.4s ease;
}

.testimonial-card {
  flex: 0 0 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: var(--spacing-md) var(--spacing-lg);
  background-color: transparent;
  border: none;
  margin: 0;
  position: relative;
  min-height: 200px;
}

.testimonial-card::before {
  content: '\201C';
  display: block;
  font-family: var(--font-heading);
  font-size: 4rem;
  line-height: 0.8;
  color: var(--color-primary);
  opacity: 0.35;
  margin-bottom: var(--spacing-xs);
}

.testimonial-card blockquote {
  position: relative;
  z-index: 1;
  margin: 0 0 var(--spacing-md) 0;
  padding: 0;
  font-size: 1.125rem;
  line-height: 1.65;
  color: var(--color-text-dark);
  font-style: italic;
  flex-grow: 1;
  max-width: 620px;
}

.testimonial-card figcaption {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  padding-top: 0;
  border-top: none;
}

.testimonial-name {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-text-dark);
  letter-spacing: 0.2px;
}

.testimonial-role {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  letter-spacing: 0.3px;
}

.carousel-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--color-border);
  background-color: #ffffff;
  color: var(--color-text-dark);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.2s ease;
  padding: 0;
  z-index: 2;
}

.carousel-nav:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.carousel-nav svg {
  width: 20px;
  height: 20px;
}

.carousel-nav--prev {
  left: 0;
}

.carousel-nav--next {
  right: 0;
}

.carousel-dots {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: var(--spacing-md);
}

.carousel-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  border: none;
  background-color: var(--color-border);
  cursor: pointer;
  padding: 0;
  transition: all 0.2s ease;
}

.carousel-dot:hover {
  background-color: var(--color-text-muted);
}

.carousel-dot.is-active {
  background-color: var(--color-primary);
  width: 24px;
  border-radius: 4px;
}

@media (max-width: 767px) {
  .testimonials-carousel {
    padding: 0 40px;
  }

  .carousel-nav {
    width: 36px;
    height: 36px;
  }

  .testimonial-card {
    padding: var(--spacing-sm);
  }
}

/* --------------------------------------------------------------------------
   15. Blog Preview / Blog Grid
   -------------------------------------------------------------------------- */

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

.blog-header h2 {
  margin: 0;
}

.blog-footer-cta {
  text-align: center;
  margin-top: var(--spacing-lg);
}

.blog-footer-cta .arrow-link {
  display: inline-flex;
}

/* Blog Filters */
.blog-filters {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
  margin-bottom: var(--spacing-lg);
}

.filter-pill {
  padding: 8px 20px;
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
  border-radius: 0;
  cursor: pointer;
  transition: var(--transition-base);
}

.filter-pill:hover {
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.filter-pill.is-active {
  background-color: var(--color-primary);
  color: #ffffff;
  border-color: var(--color-primary);
}

/* Blog Card */
.blog-card {
  display: flex;
  flex-direction: column;
}

.blog-card__image {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  background-color: var(--color-bg-light);
  margin-bottom: var(--spacing-sm);
}

.blog-card__meta {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  margin-bottom: var(--spacing-xs);
}

.blog-card__title {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  line-height: 1.4;
  margin-bottom: var(--spacing-xs);
}

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

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

.blog-card__description {
  color: var(--color-text-muted);
  font-size: 0.9375rem;
  line-height: 1.6;
  margin-bottom: var(--spacing-sm);
  flex: 1;
}


/* Infinite Scroll Sentinel */
.scroll-sentinel {
  text-align: center;
  padding: var(--spacing-lg) 0;
  color: var(--color-text-muted);
}

/* --------------------------------------------------------------------------
   16. Contact Section
   -------------------------------------------------------------------------- */

.contact {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-lg);
  align-items: start;
}

.contact__info h2 {
  margin-bottom: var(--spacing-md);
}

.contact__info p {
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-md);
}

/* --------------------------------------------------------------------------
   17. Footer
   -------------------------------------------------------------------------- */

.site-footer {
  padding: var(--spacing-lg) 0;
}

.footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: var(--spacing-md);
}

.footer__logo {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  color: var(--color-text-dark);
  text-decoration: none;
}

.footer__logo:hover {
  color: var(--color-primary);
}

.footer__social .social-icon svg {
  stroke: var(--color-text-dark);
}

.footer__social .social-icon:hover svg {
  stroke: var(--color-primary);
}

.footer__copyright {
  text-align: center;
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--color-border);
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

/* --------------------------------------------------------------------------
   WhatsApp Floating Button
   -------------------------------------------------------------------------- */

.whatsapp-float {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background-color: #25D366;
  color: #ffffff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 14px rgba(37, 211, 102, 0.35);
  transition: transform 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease;
  z-index: 1000;
  text-decoration: none;
}

.whatsapp-float svg {
  width: 28px;
  height: 28px;
  fill: #ffffff;
}

.whatsapp-float:hover {
  transform: translateY(-2px);
  background-color: #1ebe5d;
  box-shadow: 0 6px 20px rgba(37, 211, 102, 0.45);
  color: #ffffff;
}

.whatsapp-float:active {
  transform: translateY(0);
}

@media (max-width: 767px) {
  .whatsapp-float {
    bottom: 16px;
    right: 16px;
    width: 52px;
    height: 52px;
  }

  .whatsapp-float svg {
    width: 26px;
    height: 26px;
  }
}

/* --------------------------------------------------------------------------
   18. Post Page
   -------------------------------------------------------------------------- */

.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-lg);
  flex-wrap: wrap;
}

.breadcrumb a {
  color: var(--color-text-muted);
}

.breadcrumb a:hover {
  color: var(--color-primary);
}

.breadcrumb__separator {
  color: var(--color-border);
}

.post-header {
  margin-bottom: var(--spacing-lg);
}

.post-header__category {
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--color-primary);
  margin-bottom: var(--spacing-xs);
}

.post-header__title {
  margin-bottom: var(--spacing-sm);
}

.post-header__meta {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

.post-header__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
  margin-top: var(--spacing-sm);
}

.post-tag {
  padding: 4px 12px;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* Post Body (rendered markdown) */
.post-body h1 { font-size: 2.5rem; margin: var(--spacing-lg) 0 var(--spacing-md); }
.post-body h2 { font-size: 2rem; margin: var(--spacing-lg) 0 var(--spacing-sm); }
.post-body h3 { font-size: 1.5rem; margin: var(--spacing-md) 0 var(--spacing-sm); }
.post-body h4 { font-size: 1.25rem; margin: var(--spacing-md) 0 var(--spacing-xs); }
.post-body p { margin-bottom: var(--spacing-sm); color: var(--color-text-muted); }
.post-body ul, .post-body ol { margin-bottom: var(--spacing-sm); padding-left: var(--spacing-md); }
.post-body ul { list-style: disc; }
.post-body ol { list-style: decimal; }
.post-body li { margin-bottom: var(--spacing-xs); color: var(--color-text-muted); }
.post-body a { color: var(--color-primary); text-decoration: underline; }
.post-body blockquote {
  border-left: 3px solid var(--color-primary);
  padding: var(--spacing-sm) var(--spacing-md);
  margin: var(--spacing-md) 0;
  font-style: italic;
  color: var(--color-text-muted);
}
.post-body code {
  font-family: 'Courier New', monospace;
  font-size: 0.9em;
  background: var(--color-bg-light);
  padding: 2px 6px;
  border-radius: 3px;
}
.post-body pre {
  background: var(--color-text-dark);
  color: #e0e0e0;
  padding: var(--spacing-md);
  margin-bottom: var(--spacing-sm);
  overflow-x: auto;
  line-height: 1.5;
}
.post-body pre code {
  background: none;
  padding: 0;
  color: inherit;
}
.post-body img {
  margin: var(--spacing-md) 0;
}
.post-body strong { color: var(--color-text-dark); }

/* Post Navigation */
.post-nav {
  display: flex;
  justify-content: space-between;
  margin-top: var(--spacing-xl);
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--color-border);
}

.post-nav__item {
  max-width: 45%;
}

.post-nav__label {
  font-size: 0.8125rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-xs);
}

.post-nav__title {
  font-family: var(--font-heading);
  font-size: 1.125rem;
  color: var(--color-text-dark);
}

.post-nav__title:hover {
  color: var(--color-primary);
}

.post-nav__item--next {
  text-align: right;
}

/* --------------------------------------------------------------------------
   19. Utilities
   -------------------------------------------------------------------------- */

.text-center { text-align: center; }
.text-white { color: #ffffff; }

.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: -100%;
  left: 16px;
  z-index: 9999;
  padding: 12px 24px;
  background: var(--color-primary);
  color: #ffffff;
  font-weight: 600;
  font-size: 14px;
}

.skip-link:focus {
  top: 16px;
}

/* Empty State */
.empty-state {
  text-align: center;
  padding: var(--spacing-xl) 0;
  color: var(--color-text-muted);
}

/* Page header (for blog listing, post page) */
.page-header {
  background-color: var(--color-text-dark);
  padding: var(--spacing-2xl) 0 var(--spacing-lg);
  text-align: center;
}

.page-header h1 {
  color: #ffffff;
  font-size: 3rem;
}

/* --------------------------------------------------------------------------
   20. Media Queries
   -------------------------------------------------------------------------- */

/* Tablet <= 921px */
@media (max-width: 921px) {
  h1 { font-size: 3rem; }
  h2 { font-size: 2rem; }
  h3 { font-size: 1.625rem; }
  h4 { font-size: 1.25rem; }
  h5 { font-size: 0.9375rem; }
  body { font-size: 0.9375rem; }
  small, .text-small { font-size: 0.75rem; }

  .section {
    padding: 80px 0;
  }

  .hamburger {
    display: flex;
  }

  .nav,
  .header__right .social-icons,
  .header__right .lang-selector {
    display: none;
  }

  .about {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }

  .featured {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }

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

  .contact {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }

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

  .blog-header {
    text-align: center;
  }

  .post-nav {
    flex-direction: column;
    gap: var(--spacing-md);
  }

  .post-nav__item {
    max-width: 100%;
  }

  .post-nav__item--next {
    text-align: left;
  }

  .page-header {
    padding: var(--spacing-xl) 0 var(--spacing-md);
  }

  .page-header h1 {
    font-size: 2rem;
  }
}

/* Mobile <= 544px */
@media (max-width: 544px) {
  h1 { font-size: 2rem; }
  h2 { font-size: 1.625rem; }
  h3 { font-size: 1.5rem; }
  h4 { font-size: 1.25rem; }
  h5 { font-size: 0.875rem; }
  body { font-size: 0.875rem; }
  small, .text-small { font-size: 0.75rem; }

  .section {
    padding: 48px 0;
  }

  .grid--3,
  .grid--2 {
    grid-template-columns: 1fr;
  }

  .about {
    flex-direction: column-reverse;
  }

  blockquote {
    font-size: 1.25rem;
  }

  .hero {
    min-height: 80vh;
  }

  .hero__subtitle {
    font-size: 0.9375rem;
  }

  .blog-filters {
    gap: 6px;
  }

  .filter-pill {
    padding: 6px 14px;
    font-size: 12px;
  }
}