/* ==========================================================================
   QURAN CIRCLES — Global Styles
   ========================================================================== */


/* --------------------------------------------------------------------------
   Reset
   -------------------------------------------------------------------------- */

:root {
  box-sizing: border-box;
  -webkit-text-size-adjust: none;
  text-size-adjust: none;
}

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

body, h1, h2, h3, h4, h5, h6, p {
  font-weight: normal;
}

img {
  max-inline-size: 100%;
  block-size: auto;
}

a {
  color: inherit;
}


/* --------------------------------------------------------------------------
   Body
   -------------------------------------------------------------------------- */

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-regular);
  line-height: var(--line-height-body);
  color: var(--color-text);
  background-color: var(--color-bg);
  transition: background-color var(--transition-long), color var(--transition-long);
  min-block-size: 100dvh;
  display: flex;
  flex-direction: column;
}

main {
  flex: 1;
}


/* --------------------------------------------------------------------------
   Bilingual
   -------------------------------------------------------------------------- */

[lang="ar"] [data-lang="en"],
[lang="en"] [data-lang="ar"] {
  display: none;
}

@keyframes lang-exit {
  from { opacity: 1; transform: translateY(0); }
  to   { opacity: 0; transform: translateY(0.5rem); }
}

@keyframes lang-enter {
  from { opacity: 0; transform: translateY(-0.5rem); }
  to   { opacity: 1; transform: translateY(0); }
}

html.lang-switching [data-lang] {
  animation: lang-exit var(--duration-short) var(--easing) both;
}

html.lang-entered [data-lang] {
  animation: lang-enter var(--duration-short) var(--easing) both;
}

/* View Transitions API (modern browsers) */
::view-transition-old(root) {
  animation-duration: var(--duration-short);
}

::view-transition-new(root) {
  animation-duration: var(--duration-short);
}


/* ==========================================================================
   Components
   ========================================================================== */


/* --------------------------------------------------------------------------
   site-header
   -------------------------------------------------------------------------- */

site-header {
  display: block;
  position: sticky;
  inset-block-start: 0;
  z-index: 100;

  & header {
    display: flex;
    align-items: center;
    padding-inline: var(--space-lg);
    padding-block: var(--space-md);
    background-color: var(--color-bg);
    border-block-end: var(--border-width) solid var(--color-border);
    transition: background-color var(--transition-long), border-color var(--transition-long);
  }

  & .site-header-logo {
    display: block;
    inline-size: 2.5rem;
    block-size: 2.5rem;

    & img {
      display: block;
      inline-size: 100%;
      block-size: 100%;
    }
  }

  & .page-nav,
  & .header-utils {
    display: flex;
    align-items: center;
    gap: var(--space-md);
  }

  & .page-nav {
    margin-inline-start: var(--space-md);
  }

  & .header-utils {
    margin-inline-start: auto;
  }

  & .nav-link {
    font-size: var(--font-size-small);
    color: var(--color-text-secondary);
    text-decoration: none;
    padding: var(--space-xs) var(--space-sm);
    transition: color var(--transition-short);

    &:hover {
      color: var(--color-text);
    }
  }

  & .toggle {
    font-family: var(--font-family);
    font-size: var(--font-size-small);
    color: var(--color-text-muted);
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-xs) var(--space-sm);
    transition: color var(--transition-short);
    line-height: 1;
    display: flex;
    align-items: center;

    &:hover {
      color: var(--color-text);
    }
  }

  & .lang-switcher {
    display: flex;
    align-items: stretch;
    position: relative;
    background-color: var(--color-bg-element);
    border-radius: var(--radius-round);
    padding: var(--space-xs);
  }

  & .lang-pill {
    position: absolute;
    inset-block-start: var(--space-xs);
    inset-inline-start: var(--space-xs);
    block-size: calc(100% - var(--space-xs) * 2);
    border-radius: var(--radius-round);
    background-color: var(--color-bg-secondary);
    transition: transform var(--transition-short);
  }

  & .lang-btn {
    font-family: var(--font-family);
    font-size: var(--font-size-small);
    color: var(--color-text-muted);
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-sm);
    position: relative;
    z-index: 1;
    transition: color var(--transition-short);
    line-height: 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;

    &.lang-active {
      color: var(--color-text);
    }
  }

  @media (max-width: 480px) {
    & header {
      padding-inline: var(--space-md);
      padding-block: var(--space-sm);
    }

    & .page-nav,
    & .header-utils {
      gap: var(--space-sm);
    }

    & .page-nav {
      margin-inline-start: var(--space-sm);
    }
  }
}


/* ==========================================================================
   Shared Layout
   ========================================================================== */

.content-width {
  max-inline-size: 42rem;
  margin-inline: auto;
  padding-inline: var(--space-lg);
}


/* ==========================================================================
   Page: Home
   ========================================================================== */


/* --- Hero --- */

.hero {
  text-align: center;
  padding-block: var(--space-2xl);
  padding-inline: var(--space-lg);
  min-block-size: 100vh;
  min-block-size: 100dvh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-lg);
}

.intro-basmala {
  font-size: var(--font-size-large);
  color: var(--color-text-muted);
  margin-block-end: var(--space-lg);
}

.hero-verse {
  font-size: var(--font-size-heading);
  line-height: var(--line-height-heading);
  color: var(--color-text);

  & p {
    margin: 0;
  }

  & cite {
    display: block;
    font-style: normal;
    font-size: var(--font-size-small);
    color: var(--color-text-muted);
    text-align: end;
    margin-block-start: var(--space-sm);
  }
}

.hero-logo {
  display: block;
  inline-size: 50%;
  block-size: auto;
  margin-inline: auto;
  margin-block-end: var(--space-lg);
}

.hero-body p {
  color: var(--color-text-secondary);
  line-height: var(--line-height-body);
  text-align: start;
}


/* --- Slides --- */

.slide {
  min-block-size: 100vh;
  min-block-size: 100dvh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding-block: var(--space-2xl);
}

.slide-content {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.slide-heading {
  font-size: var(--font-size-heading);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-heading);
}

.slide-text {
  color: var(--color-text-secondary);
  line-height: var(--line-height-body);
}

.slide .cta-link {
  align-self: center;
  margin-block-start: var(--space-sm);
}


/* --- Reveal Animation --- */

.reveal {
  opacity: 0;
  transform: translateY(1rem);
  transition: opacity var(--duration-long) var(--easing),
              transform var(--duration-long) var(--easing);
}

.reveal.revealed {
  opacity: 1;
  transform: translateY(0);
}


/* --- Intro Sequence (first-visit) --- */

html.intro-playing site-header,
html.intro-playing .hero-body,
html.intro-playing .slide {
  opacity: 0;
  pointer-events: none;
}

html.intro-playing .hero {
  min-block-size: 100vh;
  min-block-size: 100dvh;
}

html.intro-playing .intro-basmala,
html.intro-playing .hero-verse p,
html.intro-playing .hero-verse cite {
  opacity: 0;
  transition: opacity 1000ms ease-in-out;
}

html.intro-step-1 .intro-basmala {
  opacity: 1;
}

html.intro-step-2 .hero-verse p {
  opacity: 1;
}

html.intro-step-3 .hero-verse cite {
  opacity: 1;
  transition-duration: 800ms;
}

html.intro-done site-header {
  transition: opacity 800ms ease-in-out;
}

html.intro-done .hero-body {
  transition: opacity 800ms ease-in-out;
}

.intro-skip {
  position: fixed;
  inset-block-end: var(--space-xl);
  inset-inline: 0;
  margin-inline: auto;
  inline-size: fit-content;
  font-family: var(--font-family);
  font-size: var(--font-size-small);
  color: var(--color-text-muted);
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-sm) var(--space-md);
  opacity: 0;
  transition: opacity 600ms ease-in-out;
  z-index: 200;

  &:hover {
    color: var(--color-text-secondary);
  }
}

html.intro-step-4 .intro-skip {
  opacity: 1;
}

@media (prefers-reduced-motion: reduce) {
  html.intro-playing .intro-basmala,
  html.intro-playing .hero-verse p,
  html.intro-playing .hero-verse cite,
  .intro-skip,
  html.intro-done site-header,
  html.intro-done .hero,
  .reveal {
    transition-duration: 1ms !important;
  }

  html.lang-switching [data-lang],
  html.lang-entered [data-lang] {
    animation-duration: 1ms !important;
  }

  ::view-transition-old(root),
  ::view-transition-new(root) {
    animation-duration: 1ms !important;
  }
}


/* --- Section Heading (reusable) --- */

.section-heading {
  font-size: var(--font-size-heading);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-heading);
}


/* --- Video --- */

.video-embed {
  position: relative;
  padding-block-end: 56.25%; /* 16:9 */
  block-size: 0;
  overflow: hidden;
  border-radius: var(--radius-subtle);

  & iframe {
    position: absolute;
    inset: 0;
    inline-size: 100%;
    block-size: 100%;
    border: none;
  }
}


/* --- Video Card --- */

.video-card {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  background-color: var(--color-bg-secondary);
  border-radius: var(--radius-subtle);
  padding: var(--space-md);

  & .video-embed {
    flex: 0 0 55%;
  }

  & .video-caption {
    flex: 1;
    font-size: var(--font-size-small);
    color: var(--color-text-secondary);
    line-height: var(--line-height-body);
  }
}


/* --- CTA --- */

.cta-link {
  display: inline-block;
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-bold);
  color: var(--color-bg);
  background-color: var(--color-text);
  text-decoration: none;
  padding: var(--space-sm) var(--space-xl);
  border-radius: var(--radius-round);
  transition: opacity var(--transition-short);

  &:hover {
    opacity: 0.85;
  }
}


/* --- Row List (shared bordered container) --- */

.row-list {
  display: flex;
  flex-direction: column;
  border: var(--border-width) solid var(--color-border);
  border-radius: 0.75rem;
  overflow: hidden;

  & .gallery-row {
    border-radius: 0;
  }
}

.references-list {
  margin-block-start: var(--space-lg);
}

.row-subtitle {
  display: block;
  font-size: var(--font-size-small);
  color: var(--color-text-muted);
  line-height: var(--line-height-body);
  margin-block-start: var(--space-xs);
}


/* ==========================================================================
   Page: Gallery
   ========================================================================== */

.gallery-section {
  padding-block: var(--space-xl);
}

.gallery-width {
  max-inline-size: 60rem;
}

artwork-gallery {
  display: block;
}

.gallery-search {
  display: block;
  inline-size: 100%;
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  color: var(--color-text);
  background-color: var(--color-bg-secondary);
  border: var(--border-width) solid var(--color-border);
  border-radius: var(--radius-subtle);
  padding: var(--space-md);
  margin-block-end: var(--space-md);
  position: sticky;
  inset-block-start: 0;
  z-index: 1;
  transition: border-color var(--transition-short), background-color var(--transition-long), color var(--transition-long);

  &::placeholder {
    color: var(--color-text-muted);
  }

  &:focus-visible {
    border-color: var(--color-border-active);
    outline: none;
  }
}

.gallery-list {}

.gallery-row {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-md);
  border-radius: var(--radius-subtle);
  transition: background-color var(--transition-long);

  background-color: var(--color-bg);

  & .row-download { background-color: var(--color-bg-secondary); }

  &.row-shaded {
    background-color: var(--color-bg-secondary);

    & .row-download { background-color: var(--color-bg); }
  }

  &[hidden] {
    display: none;
  }
}

.row-number {
  font-size: var(--font-size-small);
  color: var(--color-text-muted);
  font-variant-numeric: tabular-nums;
  min-inline-size: 2.5ch;
  text-align: end;
  flex-shrink: 0;
}

.row-title {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-regular);
  line-height: var(--line-height-heading);
  flex: 1;
  min-inline-size: 0;
}

.row-download {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  inline-size: 2rem;
  block-size: 2rem;
  border-radius: var(--radius-round);
  border: var(--border-width) solid var(--color-border);
  color: var(--color-text-muted);
  flex-shrink: 0;
  transition: color var(--transition-short), background-color var(--transition-short);

  & svg {
    inline-size: 0.875rem;
    block-size: 0.875rem;
  }

  &:hover {
    color: var(--color-text);
    background-color: var(--color-border);
  }
}

.gallery-status {
  text-align: center;
  color: var(--color-text-muted);
  padding-block: var(--space-xl);
}

.gallery-retry {
  font-family: var(--font-family);
  font-size: var(--font-size-small);
  color: var(--color-accent);
  background: none;
  border: none;
  cursor: pointer;
  text-decoration: underline;
  text-underline-offset: 0.2em;
  padding: 0;
}


/* ==========================================================================
   Page: Contact
   ========================================================================== */

.contact-section {
  display: flex;
  align-items: center;
  justify-content: center;
  padding-block: var(--space-2xl);
}

.contact-card {
  background-color: var(--color-bg-secondary);
  border: var(--border-width) solid var(--color-border);
  border-radius: var(--radius-subtle);
  padding: var(--space-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  text-align: center;
  transition: background-color var(--transition-long), border-color var(--transition-long);
}

.contact-heading {
  font-size: var(--font-size-heading);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-heading);
}

.contact-text {
  color: var(--color-text-secondary);
  line-height: var(--line-height-body);
}

.contact-email {
  font-size: var(--font-size-large);
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 0.2em;
  transition: opacity var(--transition-short);

  &:hover {
    opacity: 0.7;
  }
}


/* --- Footer --- */

site-footer {
  display: block;
}

.site-footer {
  padding-block: var(--space-lg);
  border-block-start: var(--border-width) solid var(--color-border);
  text-align: center;
  font-size: var(--font-size-small);
  color: var(--color-text-muted);
}


/* --- Responsive --- */

@media (max-width: 600px) {
  .hero,
  .slide {
    padding-block: var(--space-xl);
  }

  .hero {
    padding-inline: var(--space-md);
  }

  .intro-basmala {
    font-size: var(--font-size-base);
  }

  .hero-verse {
    font-size: var(--font-size-large);
  }

  .slide-heading {
    font-size: var(--font-size-large);
  }

  .content-width {
    padding-inline: var(--space-md);
  }

  .section-heading {
    font-size: var(--font-size-large);
  }

  .gallery-section {
    padding-block: var(--space-lg);
  }
}