/* TopSol Idiomas — site-wide design system */
:root {
  --color-bg: #f6f4f1;
  --color-surface: #ffffff;
  --color-ink: #1c2433;
  --color-muted: #5a6578;
  --color-accent: #c75b39;
  --color-accent-dark: #9e4328;
  --color-navy: #243047;
  --color-border: #e2ddd4;
  --font-sans: "DM Sans", system-ui, sans-serif;
  --font-display: "Fraunces", Georgia, serif;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 12px 40px rgba(28, 36, 51, 0.08);
  --header-h: 4.25rem;
  --max: 1120px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--color-ink);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  height: auto;
  vertical-align: middle;
}

a {
  color: var(--color-accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

a:hover {
  color: var(--color-accent-dark);
}

.container {
  width: min(100% - 2rem, var(--max));
  margin-inline: auto;
}

/* —— Typography —— */
h1,
h2,
h3,
.h-display {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.2;
  color: var(--color-navy);
  margin-top: 0;
}

h1 {
  font-size: clamp(2rem, 4vw, 2.75rem);
}

h2 {
  font-size: clamp(1.5rem, 3vw, 2rem);
}

h3 {
  font-size: 1.2rem;
}

.lead {
  font-size: 1.2rem;
  color: var(--color-muted);
  max-width: 38rem;
}

.muted {
  color: var(--color-muted);
  font-size: 0.95rem;
}

/* —— Header —— */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(246, 244, 241, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: var(--header-h);
  flex-wrap: wrap;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  color: inherit;
}

.brand img {
  max-height: 48px;
  width: auto;
}

.nav-toggle {
  display: none;
  border: 0;
  background: var(--color-navy);
  color: #fff;
  width: 2.75rem;
  height: 2.75rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.nav-toggle .bar {
  display: block;
  width: 1.25rem;
  height: 2px;
  background: #fff;
  margin: 4px 0;
  border-radius: 1px;
}

.site-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.25rem 1.25rem;
}

.site-nav a {
  color: var(--color-ink);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: var(--color-accent);
}

.header-cta {
  flex-shrink: 0;
}

/* —— Buttons —— */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.65rem 1.25rem;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: 999px;
  border: 2px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
}

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

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

.btn-outline {
  background: transparent;
  color: var(--color-navy);
  border-color: var(--color-border);
}

.btn-outline:hover {
  border-color: var(--color-navy);
  color: var(--color-navy);
}

/* —— Hero —— */
.hero {
  padding: clamp(2.5rem, 6vw, 4.5rem) 0;
  background: linear-gradient(160deg, #fff 0%, #f0ebe3 100%);
  border-bottom: 1px solid var(--color-border);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
}

@media (max-width: 800px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }
}

.hero-badge {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-accent);
  background: rgba(199, 91, 57, 0.12);
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  margin-bottom: 1rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.hero-media {
  align-self: center;
  width: 100%;
  max-width: 100%;
}

/* Carousel / hero: fixed aspect so mixed image sizes crop cleanly */
.hero-carousel .hero-media-frame {
  aspect-ratio: 4 / 3;
  width: 100%;
  max-width: 520px;
  margin-left: auto;
  margin-right: auto;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  background: #e8e4dc;
}

.hero-carousel .hero-media-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
}

/* —— Language switch (header) —— */
.header-tools {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

@media (min-width: 901px) {
  .header-inner {
    display: grid;
    grid-template-columns: auto 1fr auto auto;
    gap: 1rem 1.5rem;
    align-items: center;
  }

  .brand {
    grid-column: 1;
  }

  .site-nav {
    grid-column: 2;
    justify-self: center;
  }

  .site-nav ul {
    justify-content: center;
  }

  .header-tools {
    grid-column: 3;
    margin-left: 0;
  }

  .header-cta {
    grid-column: 4;
  }

  .nav-toggle {
    display: none !important;
  }
}

@media (max-width: 900px) {
  .header-inner {
    row-gap: 0.75rem;
  }

  .brand {
    order: 1;
    flex: 1;
    min-width: 0;
  }

  .header-tools {
    order: 2;
    margin-left: auto;
  }

  .nav-toggle {
    order: 3;
    display: inline-flex;
    flex-direction: column;
  }

  .header-cta {
    order: 4;
    width: 100%;
    text-align: center;
    margin-left: 0;
  }

  .site-nav {
    order: 5;
    width: 100%;
    display: none;
    padding: 0.5rem 0 1rem;
    border-top: 1px solid var(--color-border);
  }

  .site-nav.is-open {
    display: block;
  }

  .site-nav ul {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
  }
}

.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;
}

.lang-dropdown {
  display: flex;
  align-items: center;
}

.lang-select {
  font-family: var(--font-sans);
  font-size: 0.875rem;
  font-weight: 600;
  padding: 0.45rem 2rem 0.45rem 0.65rem;
  border-radius: 10px;
  border: 1px solid var(--color-border);
  background-color: var(--color-surface);
  color: var(--color-text);
  cursor: pointer;
  min-width: 7.75rem;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2364748b' d='M2 4l4 4 4-4'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.5rem center;
}

.lang-select:hover {
  border-color: var(--color-navy);
}

.lang-select:focus {
  outline: 2px solid var(--color-navy);
  outline-offset: 2px;
}

.payment-panel {
  border: 1px solid var(--color-border);
  border-radius: var(--radius, 12px);
  padding: 1.5rem;
  background: linear-gradient(145deg, rgba(36, 48, 71, 0.07), rgba(36, 48, 71, 0.02));
}

.payment-panel ul {
  margin: 0.75rem 0 0;
  padding-left: 1.25rem;
}

/* —— Hero carousel —— */
.hero-carousel {
  position: relative;
  padding-bottom: clamp(2rem, 5vw, 3.5rem);
}

.hero-carousel-viewport {
  overflow: hidden;
  border-radius: 0;
  margin: 0 calc(-1 * max(0px, (100vw - var(--max)) / 2 - 1rem));
  width: 100vw;
  max-width: 100vw;
  position: relative;
  left: 50%;
  transform: translateX(-50%);
}

@media (max-width: 900px) {
  .hero-carousel-viewport {
    margin: 0 -1rem;
    width: calc(100% + 2rem);
    left: 0;
    transform: none;
  }
}

.hero-carousel-track {
  display: flex;
  transition: transform 0.55s cubic-bezier(0.33, 1, 0.68, 1);
  will-change: transform;
}

.hero-carousel.is-reduced .hero-carousel-track {
  transition: none;
}

.hero-slide {
  flex: 0 0 100%;
  min-width: 0;
  padding: clamp(2.5rem, 6vw, 4.5rem) max(1rem, calc((100vw - var(--max)) / 2));
  box-sizing: border-box;
}

.hero-slide .hero-grid {
  max-width: var(--max);
  margin: 0 auto;
}

/* Banner slides: text + image in a fixed aspect frame */
.hero-grid--banner {
  grid-template-columns: 1fr minmax(160px, 36%);
  align-items: center;
  gap: clamp(1.25rem, 4vw, 2.5rem);
}

.hero-slide-copy {
  min-width: 0;
}

@media (max-width: 800px) {
  .hero-grid--banner {
    grid-template-columns: 1fr;
  }

  .hero-carousel .hero-media {
    order: -1;
    margin-bottom: 0.25rem;
  }

  .hero-carousel .hero-media-frame {
    max-width: none;
    aspect-ratio: 16 / 9;
    max-height: 42vh;
  }
}

.hero-carousel-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  margin-top: 1.25rem;
  position: relative;
  z-index: 2;
}

.hero-carousel-btn {
  width: 2.75rem;
  height: 2.75rem;
  border-radius: 50%;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-navy);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  line-height: 1;
  transition: background 0.15s, border-color 0.15s;
}

.hero-carousel-btn:hover,
.hero-carousel-btn:focus-visible {
  border-color: var(--color-navy);
  background: #fff;
  outline: none;
}

.hero-carousel-dots {
  display: flex;
  gap: 0.5rem;
  align-items: center;
}

.hero-carousel-dots button {
  width: 10px;
  height: 10px;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: var(--color-border);
  cursor: pointer;
  transition: transform 0.15s, background 0.15s;
}

.hero-carousel-dots button[aria-selected="true"] {
  background: var(--color-accent);
  transform: scale(1.15);
}

.hero-carousel-live {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* —— Comparison table (home) —— */
.compare-wrap {
  overflow-x: auto;
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
}

table.compare {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}

table.compare th,
table.compare td {
  padding: 0.85rem 1rem;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--color-border);
}

table.compare thead th {
  background: #f3efe8;
  font-weight: 700;
  color: var(--color-navy);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

table.compare tbody th {
  font-weight: 600;
  color: var(--color-navy);
  width: 26%;
}

table.compare td {
  color: var(--color-muted);
}

table.compare .mark {
  color: var(--color-navy);
  font-weight: 600;
}

table.compare tr:last-child th,
table.compare tr:last-child td {
  border-bottom: 0;
}

/* —— Sections —— */
.section {
  padding: clamp(2.5rem, 5vw, 4rem) 0;
}

.section-header {
  max-width: 40rem;
  margin-bottom: 2rem;
}

.section-eyebrow {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin: 0 0 0.5rem;
}

/* —— Cards —— */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1.25rem;
}

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: 0 4px 20px rgba(28, 36, 51, 0.04);
}

.card h3 {
  margin-bottom: 0.5rem;
}

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

.card .tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-muted);
  margin-bottom: 0.5rem;
}

/* —— Features / list —— */
.check-list {
  padding: 0;
  margin: 0;
  list-style: none;
}

.check-list li {
  position: relative;
  padding-left: 1.75rem;
  margin-bottom: 0.65rem;
}

.check-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.45rem;
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 50%;
  background: var(--color-accent);
}

/* —— Testimonials —— */
.quote-grid {
  display: grid;
  gap: 1rem;
}

@media (min-width: 700px) {
  .quote-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.quote {
  background: var(--color-surface);
  border-radius: var(--radius);
  padding: 1.5rem;
  border: 1px solid var(--color-border);
}

.quote blockquote {
  margin: 0 0 1rem;
  font-style: italic;
  color: var(--color-ink);
}

.quote figcaption {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-navy);
}

/* —— CTA band —— */
.cta-band {
  background: var(--color-navy);
  color: #e8ecf4;
  padding: clamp(2rem, 4vw, 3rem) 0;
  text-align: center;
}

.cta-band h2 {
  color: #fff;
}

.cta-band .btn-primary {
  margin-top: 1rem;
}

/* —— Footer —— */
.site-footer {
  background: #1a2230;
  color: #b8c0d0;
  padding: 3rem 0 2rem;
  font-size: 0.95rem;
}

.site-footer a {
  color: #e8ecf4;
  text-decoration: none;
}

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

.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr repeat(3, 1fr);
  gap: 2rem;
}

@media (max-width: 900px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 560px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }
}

.site-footer h3 {
  color: #fff;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin: 0 0 1rem;
  font-family: var(--font-sans);
}

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

.footer-links li {
  margin-bottom: 0.5rem;
}

.footer-bottom {
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 0.85rem;
  text-align: center;
}

/* —— Page hero (inner pages) —— */
.page-hero {
  padding: clamp(2rem, 4vw, 3rem) 0;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}

.page-hero h1 {
  margin-bottom: 0.5rem;
}

/* —— Tables —— */
.table-wrap {
  overflow-x: auto;
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
}

table.simple {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}

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

table.simple th {
  background: #f3efe8;
  font-weight: 600;
  color: var(--color-navy);
}

table.simple tr:last-child td {
  border-bottom: 0;
}

/* —— Forms —— */
.form-grid {
  display: grid;
  gap: 1rem;
}

@media (min-width: 640px) {
  .form-grid.two {
    grid-template-columns: 1fr 1fr;
  }
}

label {
  display: block;
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 0.35rem;
  color: var(--color-navy);
}

input,
select,
textarea {
  width: 100%;
  padding: 0.65rem 0.85rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font: inherit;
  background: #fff;
}

textarea {
  min-height: 140px;
  resize: vertical;
}

.form-note {
  font-size: 0.85rem;
  color: var(--color-muted);
  margin-top: 0.5rem;
}

/* —— DELE audio grid —— */
.audio-section {
  padding: 2rem 0 4rem;
}

.audio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.25rem;
}

.audio-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.25rem;
}

.audio-card h3 {
  margin: 0 0 0.75rem;
  font-size: 1rem;
  font-family: var(--font-sans);
  letter-spacing: 0.04em;
}

.audio-card audio {
  width: 100%;
  margin-bottom: 0.75rem;
}

.download-btn {
  display: inline-block;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-navy);
  text-decoration: none;
  border: 1px solid var(--color-border);
  padding: 0.4rem 0.85rem;
  border-radius: var(--radius-sm);
}

.download-btn:hover {
  border-color: var(--color-navy);
  color: var(--color-navy);
}

/* —— Video course page —— */
.video-page-intro {
  max-width: 40rem;
  margin-bottom: 2rem;
}

.video-layout {
  max-width: 960px;
  margin: 0 auto;
}

.video-player-panel {
  display: none;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.25rem;
  margin-bottom: 2rem;
  box-shadow: var(--shadow);
}

.video-player-panel.is-visible {
  display: block;
}

.video-player-panel h3 {
  margin-top: 0;
}

.video-player-panel video {
  width: 100%;
  border-radius: var(--radius-sm);
  background: #000;
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 1rem;
}

.gallery-grid button {
  border: 0;
  padding: 0;
  background: none;
  cursor: pointer;
  text-align: left;
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 2px solid transparent;
  transition: border-color 0.15s, transform 0.15s;
}

.gallery-grid button:hover,
.gallery-grid button:focus-visible {
  border-color: var(--color-accent);
  transform: translateY(-2px);
}

.gallery-grid img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  display: block;
}

.gallery-grid p {
  margin: 0.5rem 0 0;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-navy);
  padding: 0 0.15rem;
}

/* —— Blog article list —— */
.post-list {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.post-card {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1.25rem;
  align-items: start;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
}

@media (max-width: 600px) {
  .post-card {
    grid-template-columns: 1fr;
  }
}

.post-date {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  white-space: nowrap;
}

/* —— FAQ —— */
details.faq-item {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 0.75rem 1rem;
  margin-bottom: 0.5rem;
}

details.faq-item summary {
  font-weight: 600;
  cursor: pointer;
  color: var(--color-navy);
}

details.faq-item p {
  margin: 0.75rem 0 0;
  color: var(--color-muted);
  font-size: 0.95rem;
}

/* —— Utility —— */
.stack-lg > * + * {
  margin-top: 1.25rem;
}

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

.mb-0 {
  margin-bottom: 0;
}

code {
  font-size: 0.88em;
  background: rgba(36, 48, 71, 0.08);
  padding: 0.12em 0.4em;
  border-radius: 4px;
  font-family: ui-monospace, monospace;
}

/* —— Auth utility pages —— */
.auth-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  text-align: center;
}

.auth-card {
  background: var(--color-surface);
  padding: 2rem;
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
  max-width: 28rem;
  box-shadow: var(--shadow);
}