/* =========================
   Base / Reset
========================= */

* {
  box-sizing: border-box;
}

html {
  font-size: 16px;
}

body {
  margin: 0;
  min-height: 100vh;
  background: #eeeeee;
  color: #0a0a0a;
  font-family: var(--font-sans-regular);
}

/* =========================
   Typography
========================= */

.hero h1,
.tour-title,
.area-title,
.poi-title,
.poi-detail-title {
  font-family: var(--font-sans-bold);
}

.hero-subtitle,
.poi-body {
  font-family: var(--font-serif);
}

/* =========================
   Design Tokens
========================= */

:root {
  --color-black: #0a0a0a;
  --color-white: #ffffff;
  --color-cream-accent: #d0b097;
  --color-selection-bg: #f5ede4;
  --color-gray-medium: #888888;
  --color-gray-light: #dddddd;

  --page-max-width: 430px;
  --page-padding: 32px;

  --font-sans-bold: 'Neue Helvetica 75 Bold', Helvetica, Arial, sans-serif;
  --font-sans-regular: 'Neue Helvetica', Helvetica, Arial, sans-serif;
  --font-serif:
    'Garamond Nova Pro', Garamond, Georgia, 'Times New Roman', serif;
}
/* =========================
   Main Page Container
========================= */

.mobile-guide {
  width: min(100%, var(--page-max-width));
  min-height: 100vh;
  margin: 0 auto;
  background: var(--color-white);
}

/* =========================
   Hero
========================= */

.hero {
  min-height: 590px;
  padding: 56px var(--page-padding) 0;
  color: var(--color-white);
  background:
    linear-gradient(rgba(10, 10, 10, 0.92), rgba(10, 10, 10, 0.92)),
    repeating-linear-gradient(
      45deg,
      rgba(255, 255, 255, 0.05) 0,
      rgba(255, 255, 255, 0.05) 1px,
      transparent 1px,
      transparent 14px
    );

  display: flex;
  flex-direction: column;
}

/* =========================
   Language Selector
========================= */

.language-selector {
  display: flex;
  justify-content: flex-end;
  gap: 0;
}

.language-button {
  min-width: 56px;
  min-height: 42px;
  border: 1px solid var(--color-white);
  border-radius: 0;
  background: transparent;
  color: var(--color-white);
  font: inherit;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
}

.language-button + .language-button {
  border-left: 0;
}

.language-button.active,
.language-button[aria-pressed='true'] {
  background: var(--color-white);
  color: var(--color-black);
}

/* =========================
   Hero Content
========================= */

.hero-content {
  margin-top: auto;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--color-cream-accent);
  font-size: 0.88rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.hero h1 {
  margin: 0;
  max-width: 100%;
  font-size: clamp(2.35rem, 10.5vw, 3.25rem);
  line-height: 0.98;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: -0.035em;
}

.hero-subtitle {
  margin: 28px calc(-1 * var(--page-padding)) 0;
  padding: 24px var(--page-padding) 26px;
  background: var(--color-white);
  color: #3d3d3d;
  font-family: var(--font-serif);
  font-size: 1.28rem;
  font-weight: 700;
  font-style: italic;
  line-height: 1.6;
}

/* =========================
   Tour Areas
========================= */

.tour-areas {
  background: var(--color-white);
}

.tour-areas-title {
  margin: 0;
  padding: 24px var(--page-padding) 14px;
  color: var(--color-gray-medium);
  font-size: 1rem;
  line-height: 1;
  font-weight: 700;
  text-transform: uppercase;
}

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

.tour-list li {
  margin: 0;
}

.tour-card {
  display: grid;
  grid-template-columns: 72px 1fr 24px;
  align-items: center;
  gap: 18px;

  min-height: 96px;
  padding: 18px var(--page-padding);
  border-top: 1px solid var(--color-gray-light);

  color: var(--color-black);
  text-decoration: none;

  -webkit-tap-highlight-color: transparent;
}

.tour-card:last-child {
  border-bottom: 1px solid var(--color-gray-light);
}

.tour-card.active {
  background: var(--color-selection-bg);
}

.tour-card:active {
  background: var(--color-selection-bg);
}

.tour-number {
  display: flex;
  align-items: center;
  justify-content: center;

  width: 72px;
  height: 42px;
  border: 2px solid var(--color-gray-medium);

  color: var(--color-black);
  font-size: 1rem;
  font-weight: 700;
}

.tour-text {
  min-width: 0;
}

.tour-title {
  display: block;
  margin-bottom: 6px;
  color: var(--color-black);
  font-size: 1.35rem;
  line-height: 1.1;
  font-weight: 900;
  text-transform: uppercase;
}

.tour-meta {
  display: block;
  color: var(--color-gray-medium);
  font-size: 1rem;
  line-height: 1.2;
  font-weight: 700;
  font-style: italic;
}

.tour-arrow {
  color: var(--color-black);
  font-size: 2.4rem;
  line-height: 1;
  font-weight: 400;
  text-align: right;
}

/* =========================
   Accessibility Utility
========================= */

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

/* =========================
   Small Phone Adjustments
========================= */

@media (max-width: 360px) {
  :root {
    --page-padding: 24px;
  }

  .hero {
    min-height: 540px;
    padding-top: 44px;
  }

  .language-button {
    min-width: 64px;
    min-height: 40px;
  }

  .hero h1 {
    font-size: 2.6rem;
  }

  .hero-subtitle {
    font-size: 1.15rem;
  }

  .tour-card {
    grid-template-columns: 64px 1fr 20px;
    gap: 14px;
    min-height: 90px;
  }

  .tour-number {
    width: 64px;
  }

  .tour-title {
    font-size: 1.18rem;
  }

  .tour-meta {
    font-size: 0.95rem;
  }

  .tour-arrow {
    font-size: 2rem;
  }
}

/* =========================
   Area Page
========================= */

.area-page {
  background: var(--color-white);
}

.area-sticky {
  position: sticky;
  top: 0;
  z-index: 10;
}

.area-hero {
  min-height: 0;
  padding: 24px 28px 28px;
  background: var(--color-black);
  color: var(--color-white);

  display: flex;
  flex-direction: column;
}

.area-topbar {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.back-link {
  color: var(--color-white);
  text-decoration: none;
  font-size: 0.95rem;
  line-height: 1;
  font-weight: 700;
  text-transform: uppercase;
}

.area-code {
  color: var(--color-cream-accent);
}

.area-code::before {
  content: ' | ';
  color: var(--color-white);
}

.area-language-selector {
  align-self: flex-end;
}

.area-language-selector .language-button {
  min-width: 45px;
  min-height: 35px;
  border-color: transparent;
  background: rgba(208, 176, 151, 0.72);
  color: var(--color-white);
}

.area-language-selector .language-button.active,
.area-language-selector .language-button[aria-pressed='true'] {
  background: var(--color-white);
  color: var(--color-black);
}

.area-hero-content {
  margin-top: 20px;
  padding-left: 8px;
  padding-bottom: 0;
}

.area-title {
  margin: 0;
  max-width: 100%;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: -0.035em;
}

.area-title > [data-lang]:not([hidden]) {
  display: block;
}

.area-title-line {
  display: block;
  white-space: nowrap;
}

.area-title-main {
  font-size: clamp(1.55rem, 6.4vw, 2.05rem);
  line-height: 0.9;
}

.area-title-sub {
  margin-top: 4px;
  font-size: clamp(1.15rem, 4.9vw, 1.5rem);
  line-height: 0.88;
  letter-spacing: -0.02em;
}

.area-meta {
  margin: 10px 0 0;
  color: var(--color-white);
  font-family: var(--font-sans-regular);
  font-size: clamp(0.82rem, 3.4vw, 0.98rem);
  line-height: 1.2;
  font-weight: 700;
  font-style: italic;
}

/* =========================
   Area Progress
========================= */

.area-progress {
  padding: 8px var(--page-padding) 18px;
  background: var(--color-selection-bg);
  border-top: 4px solid var(--color-white);
  border-bottom: 1px solid var(--color-gray-light);
}

.visited-count {
  margin: 0 0 14px;
  color: var(--color-gray-medium);
  font-size: 1.35rem;
  line-height: 1;
  font-weight: 400;
}

.progress-track {
  width: 50%;
  height: 5px;
  background: var(--color-gray-light);
}

.progress-fill {
  width: 0%;
  height: 100%;
  background: var(--color-black);
}

/* =========================
   POI List
========================= */

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

.poi-card {
  display: grid;
  grid-template-columns: 78px 1fr 24px;
  align-items: center;
  gap: 16px;

  min-height: 100px;
  padding: 20px var(--page-padding);
  border-bottom: 1px solid var(--color-gray-light);

  color: var(--color-black);
  text-decoration: none;
  background: var(--color-white);

  -webkit-tap-highlight-color: transparent;
}

.poi-card.active {
  background: var(--color-selection-bg);
}

.poi-card:active {
  background: var(--color-selection-bg);
}

.poi-card.visited {
  font-weight: 700;
}

.poi-card.pending {
  color: var(--color-gray-medium);
}

.poi-number {
  font-size: 1.25rem;
  line-height: 1;
  font-weight: inherit;
}

.poi-title {
  min-width: 0;
  font-size: 1.25rem;
  line-height: 1.15;
  font-weight: inherit;
}

.poi-status {
  justify-self: end;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  border: 2px solid var(--color-gray-light);
  background: transparent;
}

.poi-card.visited .poi-status {
  border-color: var(--color-black);
  background: var(--color-black);
}

.poi-card.pending .poi-status {
  border-color: var(--color-gray-light);
  background: transparent;
}

.poi-card.active .poi-status {
  border-color: var(--color-black);
  background: var(--color-black);
}

@media (max-width: 360px) {
  .area-hero {
    min-height: 310px;
    padding-top: 28px;
  }

  .area-title {
    font-size: 2.35rem;
  }

  .area-meta {
    font-size: 1rem;
  }

  .visited-count {
    font-size: 1.2rem;
  }

  .poi-card {
    grid-template-columns: 62px 1fr 20px;
    min-height: 112px;
    gap: 12px;
  }

  .poi-number,
  .poi-title {
    font-size: 1.12rem;
  }
}

/* =========================
   POI Page
========================= */

.poi-page {
  background: var(--color-white);
}

/* =========================
   POI Carousel
========================= */

.poi-carousel {
  position: relative;
  background: var(--color-black);
}

.poi-carousel-track {
  display: flex;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scrollbar-width: none;
}

.poi-carousel-track::-webkit-scrollbar {
  display: none;
}

.poi-slide {
  flex: 0 0 100%;
  margin: 0;
  scroll-snap-align: start;
}

.poi-slide img {
  display: block;
  width: 100%;
  height: 280px;
  object-fit: cover;
}

.poi-carousel-dots {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 14px;

  display: flex;
  justify-content: center;
  gap: 10px;
}

.poi-carousel-dot {
  width: 9px;
  height: 9px;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.55);
}

.poi-carousel-dot.active {
  background: var(--color-white);
}

/* =========================
   Sticky POI Language Bar
========================= */

.poi-language-sticky {
  position: sticky;
  top: 0;
  z-index: 20;

  min-height: 58px;
  padding: 8px var(--page-padding);
  background: var(--color-white);

  display: flex;
  justify-content: flex-end;
  align-items: center;
}

.poi-language-selector .language-button {
  min-width: 48px;
  min-height: 36px;
  border-color: transparent;
  background: #f5ede4;
  color: var(--color-black);
}

.poi-language-selector .language-button.active,
.poi-language-selector .language-button[aria-pressed='true'] {
  background: #d0b097;
  color: var(--color-white);
}

/* =========================
   POI Content
========================= */

.poi-content {
  padding: 24px var(--page-padding) 32px;
}

.poi-detail-title {
  margin: 0 0 22px;
  color: var(--color-black);
  font-size: clamp(2.1rem, 9vw, 3rem);
  line-height: 0.98;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.poi-detail-title-long {
  font-size: clamp(1.65rem, 7.2vw, 2.35rem);
  letter-spacing: 0.07em;
}

.poi-body {
  color: var(--color -black);
  font-family: var(--font-serif);
  font-size: clamp(1.35rem, 5.4vw, 1.75rem);
  line-height: 1.75;
}

.poi-body p {
  margin: 0 0 1.2em;
}

/* =========================
   POI Bottom Actions
========================= */

.poi-actions {
  margin-top: 36px;
  display: grid;
  gap: 14px;
}

.poi-action {
  display: flex;
  align-items: center;
  justify-content: center;

  min-height: 58px;
  padding: 12px 18px;

  font-family: var(--font-sans-regular);
  font-size: 0.9rem;
  line-height: 1.2;
  font-weight: 700;
  text-align: center;
  text-transform: uppercase;
  text-decoration: none;
}

.poi-action-primary {
  background: var(--color-black);
  color: var(--color-white);
}

.poi-action-secondary {
  border: 2px solid var(--color-black);
  background: var(--color-white);
  color: var(--color-black);
}

@media (max-width: 360px) {
  .poi-slide img {
    height: 240px;
  }

  .poi-detail-title {
    font-size: 2rem;
  }

  .poi-detail-title-long {
    font-size: 1.45rem;
    letter-spacing: 0.045em;
  }

  .poi-body {
    font-size: 1.22rem;
  }

  .poi-action {
    font-size: 0.82rem;
  }
}