/* ==========================================================================
   ES-IT — Portfolio-Webseite
   Zentrales Stylesheet für index.html, prototyp-viewer.html, impressum.html
   Mobile-first, CSS Custom Properties, Flexbox & Grid
   ========================================================================== */

/* ----- Design Tokens ------------------------------------------------------ */
:root {
  /* Farben */
  --color-ink: #071a1e;
  --color-ink-soft: #0b262c;
  --color-paper: #f2fafb;
  --color-paper-alt: #e8fbfd;
  --color-accent: #12c2d9;
  --color-accent-dark: #0e97a8;
  --color-text-dark: #0a2a30;
  --color-text-light: #e8fbfd;
  --color-text-muted: #4a666c;
  --color-text-muted-light: #9fc3ca;
  --color-border: rgba(10, 42, 48, 0.1);
  --color-border-light: rgba(232, 251, 253, 0.12);

  /* Typografie */
  --font-display: 'Archivo', system-ui, sans-serif;
  --font-mono: 'IBM Plex Mono', ui-monospace, monospace;
  --font-body: 'Inter', system-ui, -apple-system, sans-serif;

  /* Layout */
  --container-max: 72rem;
  --container-pad: 1.25rem;
  --header-height: 4.5rem;
  --radius: 0.875rem;
  --radius-small: 0.5rem;

  /* Effekte */
  --shadow-soft: 0 4px 24px rgba(7, 26, 30, 0.06);
  --shadow-lift: 0 16px 40px rgba(7, 26, 30, 0.12);
  --transition: 220ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* ----- Reset & Base ------------------------------------------------------- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 1rem);
}

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.65;
  color: var(--color-text-dark);
  background-color: var(--color-paper);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* Solange das Login-Gate aktiv ist, kein Scrollen der Seite dahinter */
body.is-locked {
  overflow: hidden;
}

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

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

ul {
  list-style: none;
}

code {
  font-family: var(--font-mono);
  font-size: 0.85em;
}

.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-pad);
}

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

/* Fokus-Stile für Tastaturnavigation */
:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: 2px;
}

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

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

/* ----- Login-Gate ----------------------------------------------------------- */
.login-gate {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-ink);
  transition: opacity 600ms ease, visibility 600ms ease;
}

.login-gate.is-unlocking {
  opacity: 0;
  visibility: hidden;
}

.login-gate.is-hidden {
  display: none;
}

.login-gate__canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.login-gate__inner {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3rem;
  padding: var(--container-pad);
  width: 100%;
  max-width: 26rem;
}

.login-gate__logo svg {
  width: min(250px, 70vw);
  height: auto;
  filter: drop-shadow(0 0 30px rgba(18, 194, 217, 0.25));
}

.login-gate__form {
  width: 100%;
}

.login-gate__label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 0.625rem;
}

.login-gate__row {
  display: flex;
  gap: 0.625rem;
}

.login-gate__input {
  flex: 1;
  min-width: 0;
  font-family: var(--font-mono);
  font-size: 1rem;
  letter-spacing: 0.2em;
  color: var(--color-text-light);
  background-color: var(--color-ink-soft);
  border: 1.5px solid var(--color-border-light);
  border-radius: var(--radius-small);
  padding: 0.875rem 1.125rem;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.login-gate__input::placeholder {
  color: rgba(159, 195, 202, 0.45);
  letter-spacing: 0.06em;
}

.login-gate__input:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 4px rgba(18, 194, 217, 0.18);
}

.login-gate__submit {
  padding-inline: 1.375rem;
  font-size: 1.125rem;
}

.login-gate__error {
  min-height: 1.5rem;
  margin-top: 0.75rem;
  font-size: 0.875rem;
  font-weight: 600;
  color: #ff7a9c;
}

/* Shake-Animation bei falschem Passwort */
@keyframes gate-shake {
  0%, 100% { transform: translateX(0); }
  20% { transform: translateX(-8px); }
  40% { transform: translateX(8px); }
  60% { transform: translateX(-5px); }
  80% { transform: translateX(5px); }
}

.login-gate__form.is-shaking {
  animation: gate-shake 400ms ease;
}

/* ----- Typografie-Bausteine ----------------------------------------------- */
.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent-dark);
  margin-bottom: 1rem;
}

.eyebrow--on-dark {
  color: var(--color-accent);
}

.text-accent {
  color: var(--color-accent);
}

.section__title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.75rem, 4.5vw, 2.75rem);
  line-height: 1.12;
  letter-spacing: -0.02em;
  margin-bottom: 1.25rem;
}

.section__title--on-dark {
  color: var(--color-text-light);
}

.section__intro {
  max-width: 40rem;
  color: var(--color-text-muted);
  margin-bottom: 3rem;
}

.section__intro--on-dark {
  color: var(--color-text-muted-light);
}

/* ----- Buttons ------------------------------------------------------------ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.9375rem;
  letter-spacing: 0.01em;
  padding: 0.875rem 1.75rem;
  border-radius: var(--radius-small);
  border: 2px solid transparent;
  cursor: pointer;
  transition: background-color var(--transition), border-color var(--transition),
    color var(--transition), transform var(--transition), box-shadow var(--transition);
}

.btn:active {
  transform: translateY(1px);
}

.btn--primary {
  background-color: var(--color-accent);
  color: var(--color-ink);
  box-shadow: 0 8px 20px rgba(18, 194, 217, 0.25);
}

.btn--primary:hover {
  background-color: var(--color-accent-dark);
  color: var(--color-text-light);
  box-shadow: 0 10px 24px rgba(14, 151, 168, 0.35);
}

.btn--ghost {
  border-color: rgba(232, 251, 253, 0.35);
  color: var(--color-text-light);
}

.btn--ghost:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  background-color: rgba(18, 194, 217, 0.08);
}

.btn--ghost-dark {
  border-color: rgba(10, 42, 48, 0.25);
  color: var(--color-text-dark);
}

.btn--ghost-dark:hover {
  border-color: var(--color-accent-dark);
  color: var(--color-accent-dark);
  background-color: rgba(18, 194, 217, 0.08);
}

.btn--small {
  padding: 0.55rem 1.15rem;
  font-size: 0.875rem;
}

.btn--large {
  padding: 1rem 2.25rem;
  font-size: 1rem;
}

/* ----- Header ------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(7, 26, 30, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.site-header.is-scrolled {
  border-bottom-color: var(--color-border-light);
  box-shadow: 0 8px 30px rgba(7, 26, 30, 0.35);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: var(--header-height);
}

.brand {
  display: inline-flex;
  align-items: center;
}

.brand__logo {
  width: auto;
  height: 3rem;
}

/* Mobile-Navigation */
.nav__toggle {
  display: flex;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  padding: 0.5rem;
  cursor: pointer;
}

.nav__toggle-bar {
  width: 24px;
  height: 2px;
  background-color: var(--color-text-light);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

.nav__toggle[aria-expanded="true"] .nav__toggle-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav__toggle[aria-expanded="true"] .nav__toggle-bar:nth-child(2) {
  opacity: 0;
}

.nav__toggle[aria-expanded="true"] .nav__toggle-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.nav__menu {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  padding: 1rem var(--container-pad) 1.5rem;
  background-color: var(--color-ink);
  border-bottom: 1px solid var(--color-border-light);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-0.5rem);
  transition: opacity var(--transition), transform var(--transition),
    visibility var(--transition);
}

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

.nav__link {
  display: block;
  padding: 0.625rem 0.25rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.9375rem;
  color: var(--color-text-light);
  transition: color var(--transition);
}

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

.nav__cta-item {
  margin-top: 0.75rem;
}

@media (min-width: 48rem) {
  .nav__toggle {
    display: none;
  }

  .nav__menu {
    position: static;
    flex-direction: row;
    align-items: center;
    gap: 2rem;
    padding: 0;
    background: none;
    border: none;
    opacity: 1;
    visibility: visible;
    transform: none;
  }

  .nav__cta-item {
    margin-top: 0;
  }
}

/* ----- Hero ------------------------------------------------------------------ */
.hero {
  position: relative;
  display: flex;
  align-items: center;
  min-height: calc(100svh - var(--header-height));
  background-color: var(--color-ink);
  color: var(--color-text-light);
  overflow: hidden;
}

.hero__canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

/* Sanfter Glow hinter dem Content */
.hero__glow {
  position: absolute;
  width: 60rem;
  height: 60rem;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: radial-gradient(circle, rgba(18, 194, 217, 0.09) 0%, transparent 60%);
  pointer-events: none;
}

.hero__content {
  position: relative;
  z-index: 2;
  padding-block: 5rem;
}

.hero__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2.25rem, 7vw, 4.5rem);
  line-height: 1.05;
  letter-spacing: -0.025em;
  margin-bottom: 1.5rem;
}

.hero__subtitle {
  max-width: 38rem;
  font-size: clamp(1rem, 1.6vw, 1.1875rem);
  color: var(--color-text-muted-light);
  margin-bottom: 2.5rem;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 4rem;
}

.hero__stats {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
  max-width: 44rem;
  border-top: 1px solid var(--color-border-light);
  padding-top: 2rem;
}

.hero__stat dt {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-accent);
  margin-bottom: 0.25rem;
}

.hero__stat dd {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.0625rem;
  color: var(--color-text-light);
}

@media (min-width: 40rem) {
  .hero__stats {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ----- Seitenkopf (Unterseiten) ---------------------------------------------- */
.page-hero {
  background-color: var(--color-ink);
  color: var(--color-text-light);
  padding-block: 4rem 4.5rem;
  background-image:
    radial-gradient(circle at 85% 20%, rgba(18, 194, 217, 0.12) 0%, transparent 45%),
    linear-gradient(rgba(232, 251, 253, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(232, 251, 253, 0.03) 1px, transparent 1px);
  background-size: auto, 48px 48px, 48px 48px;
}

.page-hero__title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2rem, 5.5vw, 3.25rem);
  line-height: 1.08;
  letter-spacing: -0.02em;
}

/* ----- Sektionen ------------------------------------------------------------ */
.section {
  padding-block: 5rem;
}

@media (min-width: 48rem) {
  .section {
    padding-block: 7.5rem;
  }
}

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

.section--dark {
  position: relative;
  background-color: var(--color-ink);
  color: var(--color-text-muted-light);
  overflow: hidden;
}

/* ----- Leistungs-Karten ------------------------------------------------------ */
.cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

@media (min-width: 48rem) {
  .cards {
    grid-template-columns: repeat(3, 1fr);
  }
}

.card {
  display: flex;
  flex-direction: column;
  background-color: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 2rem 1.75rem;
  box-shadow: var(--shadow-soft);
  transition: transform var(--transition), box-shadow var(--transition),
    border-color var(--transition);
}

.card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lift);
  border-color: rgba(18, 194, 217, 0.45);
}

.card__icon {
  width: 3.5rem;
  height: 3.5rem;
  display: grid;
  place-items: center;
  color: var(--color-accent-dark);
  background-color: var(--color-paper-alt);
  /* Hexagon-Form passend zum Logo */
  clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
  padding: 0.75rem;
  margin-bottom: 1.5rem;
  transition: background-color var(--transition), color var(--transition);
}

.card:hover .card__icon {
  background-color: var(--color-accent);
  color: var(--color-ink);
}

.card__title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.1875rem;
  letter-spacing: -0.01em;
  margin-bottom: 0.75rem;
}

.card__text {
  color: var(--color-text-muted);
  font-size: 0.9375rem;
  flex-grow: 1;
}

/* ----- Prototypen-Galerie ------------------------------------------------------ */
.gallery {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
  position: relative;
  z-index: 1;
}

@media (min-width: 48rem) {
  .gallery {
    grid-template-columns: repeat(3, 1fr);
  }
}

.gallery__item {
  position: relative;
  display: flex;
  flex-direction: column;
  background-color: var(--color-ink-soft);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform var(--transition), border-color var(--transition),
    box-shadow var(--transition);
}

.gallery__item:hover {
  transform: translateY(-6px);
  border-color: rgba(18, 194, 217, 0.55);
  box-shadow: 0 20px 44px rgba(0, 0, 0, 0.35);
}

.gallery__thumb {
  position: relative;
  display: grid;
  place-items: center;
  aspect-ratio: 16 / 9;
  background:
    radial-gradient(circle at 30% 30%, rgba(18, 194, 217, 0.14) 0%, transparent 55%),
    var(--color-ink);
  border-bottom: 1px solid var(--color-border-light);
}

.gallery__hex {
  position: absolute;
  width: 5.5rem;
  height: 6.25rem;
  background-color: rgba(18, 194, 217, 0.12);
  clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
  transition: transform var(--transition), background-color var(--transition);
}

.gallery__item:hover .gallery__hex {
  transform: scale(1.12) rotate(8deg);
  background-color: rgba(18, 194, 217, 0.22);
}

.gallery__num {
  position: relative;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.75rem;
  color: var(--color-accent);
}

.gallery__meta {
  padding: 1.25rem 1.5rem 1.5rem;
}

.gallery__title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.0625rem;
  color: var(--color-text-light);
  margin-bottom: 0.25rem;
}

.gallery__tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-text-muted-light);
}

.gallery__arrow {
  position: absolute;
  top: 1rem;
  right: 1.25rem;
  font-size: 1.125rem;
  color: var(--color-accent);
  opacity: 0;
  transform: translateX(-6px);
  transition: opacity var(--transition), transform var(--transition);
}

.gallery__item:hover .gallery__arrow {
  opacity: 1;
  transform: translateX(0);
}

/* Dekoratives Hexagon im Hintergrund */
.hex-decor {
  position: absolute;
  width: 30rem;
  height: 34rem;
  background-color: rgba(18, 194, 217, 0.035);
  clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
  pointer-events: none;
}

.hex-decor--left {
  top: -8rem;
  left: -14rem;
}

/* ----- Kontakt / CTA ------------------------------------------------------------ */
.section--cta {
  background:
    radial-gradient(ellipse at 50% 120%, rgba(18, 194, 217, 0.12) 0%, transparent 55%),
    var(--color-paper-alt);
}

.cta {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.cta .section__intro {
  margin-inline: auto;
}

.cta__actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem;
}

/* ----- Kontakt-Seite ---------------------------------------------------------- */
.contact {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
}

@media (min-width: 60rem) {
  .contact {
    grid-template-columns: 0.8fr 1.2fr;
    gap: 5rem;
    align-items: start;
  }
}

.contact__heading {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.5rem;
  letter-spacing: -0.01em;
  margin-bottom: 1rem;
}

.contact__text {
  color: var(--color-text-muted);
  margin-bottom: 2rem;
  max-width: 26rem;
}

.contact__facts {
  display: grid;
  gap: 1.25rem;
}

.contact__facts li {
  display: grid;
  gap: 0.125rem;
  font-weight: 500;
}

.contact__facts-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-accent-dark);
}

/* Formular-Card */
.form-card {
  background-color: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-soft);
  padding: 2rem 1.5rem;
}

@media (min-width: 48rem) {
  .form-card {
    padding: 3rem;
  }
}

.form__row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0 1.25rem;
}

@media (min-width: 40rem) {
  .form__row {
    grid-template-columns: 1fr 1fr;
  }
}

.form__group {
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
  margin-bottom: 1.5rem;
}

.form__label {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.875rem;
}

.form__input {
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--color-text-dark);
  background-color: var(--color-paper);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-small);
  padding: 0.75rem 1rem;
  width: 100%;
  transition: border-color var(--transition), box-shadow var(--transition),
    background-color var(--transition);
}

.form__input::placeholder {
  color: rgba(74, 102, 108, 0.6);
}

.form__input:hover {
  border-color: rgba(18, 194, 217, 0.45);
}

.form__input:focus {
  outline: none;
  border-color: var(--color-accent);
  background-color: #ffffff;
  box-shadow: 0 0 0 4px rgba(18, 194, 217, 0.15);
}

.form__input.is-invalid {
  border-color: #d9376e;
  box-shadow: 0 0 0 4px rgba(217, 55, 110, 0.12);
}

.form__textarea {
  resize: vertical;
  min-height: 8rem;
}

.form__hint {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  margin-bottom: 1.5rem;
}

.form__submit {
  width: 100%;
}

@media (min-width: 40rem) {
  .form__submit {
    width: auto;
  }
}

.form__status {
  margin-top: 1.25rem;
  font-weight: 600;
  font-size: 0.9375rem;
  min-height: 1.5rem;
}

.form__status.is-success {
  color: #0d7a4f;
}

.form__status.is-error {
  color: #d9376e;
}

/* ----- Impressum / Rechtstexte -------------------------------------------------- */
.legal {
  max-width: 46rem;
  min-height: 30vh;
}

.legal h2 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.25rem;
  letter-spacing: -0.01em;
  margin: 2.5rem 0 0.75rem;
}

.legal h2:first-child {
  margin-top: 0;
}

.legal p {
  color: var(--color-text-muted);
  margin-bottom: 0.75rem;
}

/* ----- Prototyp-Viewer ------------------------------------------------------------ */
.viewer-page {
  display: flex;
  flex-direction: column;
  height: 100vh;
  height: 100svh;
  background-color: var(--color-ink);
  /* Kopieren/Markieren im Viewer erschweren */
  user-select: none;
  -webkit-user-select: none;
}

.viewer-header {
  flex-shrink: 0;
  background-color: rgba(7, 26, 30, 0.96);
  border-bottom: 1px solid var(--color-border-light);
}

.viewer-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  max-width: 100%;
  padding: 0.75rem var(--container-pad);
}

.viewer-header__back {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.875rem;
  color: var(--color-text-light);
  white-space: nowrap;
  transition: color var(--transition);
}

.viewer-header__back:hover {
  color: var(--color-accent);
}

.viewer-header__title {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--color-text-muted-light);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.viewer-header__logo {
  height: 2.25rem;
  width: auto;
  flex-shrink: 0;
}

@media (max-width: 40rem) {
  .viewer-header__logo {
    display: none;
  }
}

.viewer-main {
  position: relative;
  flex: 1;
  min-height: 0;
}

.viewer-frame {
  display: block;
  width: 100%;
  height: 100%;
  border: none;
  background-color: #ffffff;
}

.viewer-empty {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  text-align: center;
  background-color: var(--color-ink);
  color: var(--color-text-muted-light);
  padding: var(--container-pad);
}

.viewer-empty__text {
  max-width: 34rem;
  margin-bottom: 1rem;
}

.viewer-empty__text code {
  color: var(--color-accent);
}

/* ----- Footer ----------------------------------------------------------------- */
.site-footer {
  background-color: var(--color-ink);
  color: var(--color-text-muted-light);
  font-size: 0.9rem;
}

.footer__bottom {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 2rem;
  justify-content: space-between;
  align-items: center;
  padding-block: 1.75rem;
  font-size: 0.8125rem;
}

.footer__bottom--single {
  border-top: none;
}

.footer__inline-list {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.footer__inline-list a {
  color: var(--color-text-muted-light);
  font-weight: 500;
  transition: color var(--transition);
}

.footer__inline-list a:hover {
  color: var(--color-accent);
}

.footer__mono {
  font-family: var(--font-mono);
  color: rgba(159, 195, 202, 0.55);
}

/* ----- Scroll-Reveal ------------------------------------------------------------ */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 600ms ease, transform 600ms ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
  }
}