/* ==========================================================================
   Tawantinsuyo Culture Website - MVP styles
   ========================================================================== */

:root {
  --color-primary: #206ea7;
  --color-primary-dark: #17537e;
  --color-accent-book: #077b70;
  --color-accent-chapter: #af4d0d;
  --color-bg-main: #f8f9fa;
  --color-bg-card: #ffffff;
  --color-text-main: #2b2b2b;
  --color-text-muted: #555555;
  --color-border: #e2e8f0;
  --font-body: 'Segoe UI', -apple-system, BlinkMacSystemFont, Roboto, Helvetica, Arial, sans-serif;
  --content-width: 100%;
  --nav-height: 56px;
}

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

html {
  font-size: 21px;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-height) + 1rem);
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text-main);
  background-color: var(--color-bg-main);
}

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

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

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

:focus-visible {
  outline: 3px solid var(--color-accent-chapter);
  outline-offset: 2px;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--color-bg-card);
  padding: 0.5rem 1rem;
  z-index: 100;
}

.skip-link:focus {
  left: 0;
}

/* ---------- Header ---------- */
.site-header {
  background: linear-gradient(135deg, #17537e 0%, #206ea7 60%, #077b70 100%);
  color: #ffffff;
  padding: 2rem 1.5rem;
}

.site-header__inner {
  max-width: var(--content-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 2rem;
}

.site-header__emblem {
  width: 180px;
  height: 180px;
  object-fit: contain;
  flex-shrink: 0;
  filter: drop-shadow(0 4px 10px rgba(0, 0, 0, 0.35));
}

.site-header__motto {
  margin: 0 0 0.5rem;
  font-style: italic;
  opacity: 0.92;
}

.site-header__title {
  margin: 0 0 1rem;
  font-size: 2.5rem;
  line-height: 1.2;
  letter-spacing: 0.02em;
}

.site-header__intro {
  margin: 0;
  text-align: justify;
}

.site-header__utility {
  max-width: var(--content-width);
  margin: 0 auto 0.75rem auto;
  display: flex;
  justify-content: flex-end;
  align-items: center;
}

#google_translate_element {
  display: inline-block;
}

.goog-te-gadget-simple {
  background-color: rgba(255, 255, 255, 0.95) !important;
  border: 1px solid rgba(255, 255, 255, 0.5) !important;
  padding: 4px 8px !important;
  border-radius: 6px !important;
  font-family: inherit !important;
  font-size: 0.75rem !important;
  line-height: 1.4 !important;
}

.goog-te-gadget-simple .goog-te-menu-value {
  color: #1f2933 !important;
}

.goog-te-gadget-simple .goog-te-menu-value span {
  text-decoration: none !important;
}

/* ---------- Navigation ---------- */
.site-navigation {
  background: var(--color-primary-dark);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.site-navigation__toggle {
  display: none;
  width: 100%;
  min-height: var(--nav-height);
  padding: 0 1.25rem;
  background: none;
  border: 0;
  color: #ffffff;
  font: inherit;
  font-weight: 600;
  text-align: left;
  cursor: pointer;
  align-items: center;
  gap: 0.75rem;
}

.site-navigation__toggle-icon,
.site-navigation__toggle-icon::before,
.site-navigation__toggle-icon::after {
  display: block;
  width: 22px;
  height: 2px;
  background: #ffffff;
  position: relative;
  content: "";
}

.site-navigation__toggle-icon::before {
  position: absolute;
  top: -7px;
}

.site-navigation__toggle-icon::after {
  position: absolute;
  top: 7px;
}

.site-navigation__list {
  list-style: none;
  margin: 0 auto;
  padding: 0.35rem 1rem;
  max-width: 1200px;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.15rem 0.25rem;
}

.site-navigation__list a {
  display: block;
  padding: 0.35rem 0.75rem;
  border-radius: 6px;
  color: #ffffff;
  font-size: 0.78rem;
  line-height: 1.3;
  text-decoration: none;
  transition: background-color 0.2s ease;
}

.site-navigation__list a:hover,
.site-navigation__list a.is-active {
  background-color: rgba(255, 255, 255, 0.2);
}

/* ---------- Main content & cards ---------- */
.main-content {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 2rem 1rem 4rem;
}

.card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: 10px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.06);
  padding: 2rem;
  margin-bottom: 2rem;
}

/* ---------- Typography & layout rules (maquetacion) ---------- */
.section-title {
  margin: 0 0 1.25rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--color-border);
  font-size: 1.5rem;
  line-height: 1.3;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: var(--color-primary-dark);
  overflow-wrap: break-word;
}

.topic-title {
  margin: 2.5rem 0 1.25rem;
  font-size: 1.25rem;
  line-height: 1.3;
  text-align: center;
  color: var(--color-accent-book);
}

.card>.topic-title:first-of-type,
.section-title+.topic-title {
  margin-top: 1rem;
}

.subsection-title {
  margin: 2rem 0 1rem;
  font-size: 1.05rem;
  line-height: 1.35;
  color: var(--color-text-main);
}

.narrative-paragraph {
  margin: 0 0 1.25rem;
  text-align: justify;
  text-justify: inter-word;
  text-indent: 2.25rem;
  hyphens: auto;
}

.bullet-list {
  margin: 0 0 1.25rem;
  padding-left: 2.25rem;
  text-align: justify;
}

.bullet-list li {
  margin-bottom: 0.75rem;
}

.bullet-list .bullet-list__sub {
  list-style-type: circle;
  margin-left: 2rem;
}

.document-list {
  margin: 0 0 1.25rem;
  padding-left: 3rem;
  line-height: 1.7;
}

.email-list {
  padding-left: 2.25rem;
}

.email-list>li {
  overflow-wrap: break-word;
}

.feedback-link {
  margin: 0 0 1.5rem;
  text-align: right;
  font-size: 0.85rem;
  font-weight: 600;
}

/* ---------- Images ---------- */
.theme-figure {
  margin: 0 0 1.75rem;
}

.theme-figure img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 8px;
}

.theme-figure--right {
  float: right;
  width: min(40%, 400px);
  margin: 0.25rem 0 1rem 1.5rem;
}

.topic::after {
  content: "";
  display: block;
  clear: both;
}

.image-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  width: 100%;
  aspect-ratio: 16 / 9;
  border: 2px dashed var(--color-primary);
  border-radius: 8px;
  background: repeating-linear-gradient(45deg, #f1f6fa, #f1f6fa 12px, #e8f0f6 12px, #e8f0f6 24px);
  color: var(--color-primary-dark);
  text-align: center;
}

.image-placeholder__title {
  font-weight: 700;
}

.image-placeholder__meta {
  font-size: 0.8rem;
}

.theme-figure figcaption {
  margin-top: 0.5rem;
  font-size: 0.86rem;
  font-style: italic;
  text-align: center;
  color: var(--color-text-muted);
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
}

.gallery-item {
  display: block;
  text-decoration: none;
  color: var(--color-text-main);
  transition: transform 0.2s ease;
}

.gallery-item:hover {
  transform: translateY(-4px);
}

.gallery-item__label {
  display: block;
  margin-top: 0.5rem;
  font-weight: 600;
  text-align: center;
}

/* ---------- Form ---------- */
.form-field {
  margin-bottom: 1.25rem;
}

.form-field label {
  display: block;
  margin-bottom: 0.35rem;
  font-weight: 600;
}

.form-field input,
.form-field textarea {
  width: 100%;
  padding: 0.6rem 0.8rem;
  border: 1px solid #b6c2cf;
  border-radius: 6px;
  font: inherit;
  background: #ffffff;
}

.form-status {
  margin-top: 1rem;
  padding: 0.75rem 1rem;
  border-radius: 6px;
  background: #e6f4f1;
  color: var(--color-accent-book);
  font-weight: 600;
}

.form-status.is-error {
  background: #fbebe3;
  color: var(--color-accent-chapter);
}

/* ---------- Buttons ---------- */
.button {
  display: inline-block;
  padding: 0.6rem 1.4rem;
  border: 2px solid var(--color-primary);
  border-radius: 8px;
  font: inherit;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: background-color 0.2s ease, transform 0.2s ease;
}

.button:hover {
  transform: translateY(-2px);
}

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

.button--primary:hover {
  background: var(--color-primary-dark);
  color: #ffffff;
}

.button--secondary {
  background: #ffffff;
  color: var(--color-primary);
}

.button--secondary:hover {
  background: #eef5fa;
}

.button--small {
  padding: 0.3rem 0.9rem;
  font-size: 0.8rem;
  border-width: 1px;
  border-radius: 6px;
}

.pdf-modal__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

/* ---------- PDF modal ---------- */
.pdf-modal {
  width: min(1000px, 95vw);
  height: 90vh;
  padding: 0;
  border: 0;
  border-radius: 10px;
  overflow: hidden;
}

.pdf-modal[open] {
  display: flex;
  flex-direction: column;
}

.pdf-modal::backdrop {
  background: rgba(0, 0, 0, 0.65);
}

.pdf-modal__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.75rem 1rem;
  background: var(--color-primary-dark);
}

.pdf-modal__title {
  margin: 0;
  font-size: 0.95rem;
  color: #ffffff;
}

.pdf-modal__frame {
  flex: 1;
  width: 100%;
  border: 0;
}

/* ---------- Reader page ---------- */
.reader-page {
  display: flex;
  flex-direction: column;
  height: 100vh;
}

.reader-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.75rem 1.25rem;
  background: var(--color-primary-dark);
  color: #ffffff;
}

.reader-bar__title {
  margin: 0;
  font-size: 0.95rem;
}

.reader-frame {
  flex: 1;
  width: 100%;
  border: 0;
}

/* ---------- Footer & back to top ---------- */
.site-footer {
  padding: 1.5rem;
  background: #1f2933;
  color: #ffffff;
  text-align: center;
  font-size: 0.8rem;
}

.site-footer p {
  margin: 0.25rem 0;
}

.back-to-top {
  position: fixed;
  right: 1.25rem;
  bottom: 1.25rem;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 0;
  border-radius: 50%;
  background: var(--color-primary);
  color: #ffffff;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease, transform 0.2s ease;
}

.back-to-top.is-visible {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  transform: translateY(-3px);
}

/* ---------- Responsive ---------- */
@media (max-width: 800px) {
  html {
    font-size: 21px;
  }

  .site-header__inner {
    flex-direction: column;
    text-align: center;
  }

  .site-header__title {
    font-size: 1.8rem;
  }

  .site-navigation__toggle {
    display: flex;
  }

  .site-navigation__list {
    display: none;
    flex-direction: column;
    flex-wrap: nowrap;
    justify-content: flex-start;
    padding-top: 0;
    max-height: 70vh;
    overflow-y: auto;
  }

  .site-navigation__list.is-open {
    display: flex;
  }

  .site-navigation__list a {
    font-size: 0.9rem;
    padding: 0.6rem 0.75rem;
  }

  .card {
    padding: 1.25rem;
  }

  .narrative-paragraph {
    text-indent: 1.5rem;
  }

  .theme-figure--right {
    float: none;
    width: 100%;
    margin: 0 0 1.5rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  * {
    transition: none !important;
  }
}