:root {
  color-scheme: light dark;
  --bg: #fbf7f1;
  --fg: #1a2233;
  --muted: #647089;
  --border: #e6e1d8;
  --card-bg: #ffffff;

  --sky-deep: #102b52;
  --sky-mid: #1f6fd1;
  --sky-light: #6fd0f5;
  --sunset: #ff7a59;
  --sunset-dark: #e6551f;

  --cat-food-bg: #ffe4d6;
  --cat-food-fg: #9a3d12;
  --cat-activity-bg: #d7f3e3;
  --cat-activity-fg: #157347;
  --cat-coffee-bg: #ecdcc8;
  --cat-coffee-fg: #6b4423;
  --cat-practical-bg: #dbe8fb;
  --cat-practical-fg: #1d4d99;
  --cat-other-bg: #ece1fb;
  --cat-other-fg: #6631b8;
  --cat-warning-bg: #fde0e0;
  --cat-warning-fg: #b3241c;
  --warning-accent: #d92d20;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0c1524;
    --fg: #edf1f9;
    --muted: #9aa8c2;
    --border: #263151;
    --card-bg: #131f34;

    --sky-deep: #0a1c38;
    --sky-mid: #2f7fe0;
    --sky-light: #6fd0f5;
    --sunset: #ff8a68;
    --sunset-dark: #ff6a3d;

    --cat-food-bg: #3d2416;
    --cat-food-fg: #ffb388;
    --cat-activity-bg: #143526;
    --cat-activity-fg: #7be0ac;
    --cat-coffee-bg: #33261a;
    --cat-coffee-fg: #e3bd8f;
    --cat-practical-bg: #16294a;
    --cat-practical-fg: #9dc4fb;
    --cat-other-bg: #291d42;
    --cat-other-fg: #cbaef7;
    --cat-warning-bg: #451a17;
    --cat-warning-fg: #ff9d90;
    --warning-accent: #ff5b4d;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  line-height: 1.55;
}

h1, h2, .brand {
  font-family: "Baloo 2", "Inter", sans-serif;
}

main {
  max-width: 640px;
  margin: 0 auto;
  padding: 1.5rem 1rem 3.5rem;
}

/* --- Header --- */

.site-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.75rem;
  padding: 1rem 1.5rem;
  background: linear-gradient(120deg, var(--sky-deep), var(--sky-mid) 65%, var(--sky-light));
  box-shadow: 0 2px 12px rgba(16, 43, 82, 0.25);
}

.site-header .brand {
  font-weight: 700;
  font-size: 1.3rem;
  text-decoration: none;
  color: #fff;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  letter-spacing: 0.01em;
}

.brand-mark {
  display: inline-block;
  transform: rotate(-8deg);
}

.site-header nav {
  display: flex;
  gap: 1.1rem;
  align-items: center;
  flex-wrap: wrap;
}

.site-header nav a {
  color: rgba(255, 255, 255, 0.92);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
}
.site-header nav a:hover { color: #fff; text-decoration: underline; }

.site-header nav a.nav-cta {
  background: var(--sunset);
  color: #fff;
  padding: 0.45rem 1rem;
  border-radius: 999px;
  font-weight: 600;
  box-shadow: 0 3px 10px rgba(255, 122, 89, 0.4);
}
.site-header nav a.nav-cta:hover {
  background: var(--sunset-dark);
  text-decoration: none;
}

.link-button {
  background: none;
  border: none;
  padding: 0;
  color: rgba(255, 255, 255, 0.92);
  text-decoration: underline;
  cursor: pointer;
  font: inherit;
  font-size: 0.95rem;
}

.inline-form { display: inline; }

.lang-switch a { color: rgba(255, 255, 255, 0.8); }

.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: #fff;
  font-size: 1.4rem;
  line-height: 1;
  padding: 0.3rem 0.5rem;
  cursor: pointer;
  border-radius: 8px;
}
.nav-toggle:hover { background: rgba(255, 255, 255, 0.12); }

@media (max-width: 480px) {
  .site-header {
    position: relative;
    flex-wrap: nowrap;
    padding: 0.75rem 1rem;
  }
  .site-header .brand { font-size: 1.15rem; }

  .nav-toggle { display: inline-flex; }

  .site-header nav {
    display: none;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.9rem;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--sky-deep);
    padding: 1.1rem 1.5rem 1.4rem;
    box-shadow: 0 8px 16px rgba(16, 43, 82, 0.25);
    z-index: 20;
  }
  .site-header nav.nav-open { display: flex; }
}

/* --- Sandbox banner --- */

.sandbox-banner {
  text-align: center;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--sunset-dark);
  background: var(--cat-warning-bg);
  padding: 0.55rem 1rem;
}

/* --- Hero --- */

.hero {
  text-align: center;
  padding: 1.5rem 0 2rem;
}

.hero h1 {
  font-size: 2rem;
  color: var(--sky-deep);
  margin: 0 0 0.6rem;
}

@media (prefers-color-scheme: dark) {
  .hero h1 { color: var(--sky-light); }
}

.hero .intro {
  color: var(--muted);
  font-size: 1.05rem;
  max-width: 30rem;
  margin: 0 auto 1.25rem;
}

/* --- Photo strip (gate page, homepage hero) --- */

.photo-strip {
  max-width: 30rem;
  margin: 1.5rem auto 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.5rem;
}

.photo-strip img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: 14px;
  box-shadow: 0 4px 14px rgba(16, 43, 82, 0.12);
  display: block;
}

@media (max-width: 480px) {
  .photo-strip { grid-template-columns: repeat(2, 1fr); }
}

/* --- Auth card --- */

.auth-card {
  max-width: 24rem;
  margin: 1rem auto 0;
  padding: 2rem 1.75rem;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 18px;
  box-shadow: 0 4px 20px rgba(16, 43, 82, 0.08);
  text-align: center;
}

.auth-icon { font-size: 2.2rem; margin-bottom: 0.4rem; }
.auth-card h1 { margin-top: 0; }
.auth-note { color: var(--muted); font-size: 0.92rem; margin-bottom: 1rem; }
.auth-card .auth-form { text-align: left; }

/* --- Forms & inputs --- */

form.search-form, form.auth-form, form.tip-form, form.filter-form {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  position: relative;
}

form.search-form {
  flex-direction: row;
  max-width: 26rem;
  margin: 0 auto;
}
form.search-form input { flex: 1; }

.filter-form {
  flex-direction: row;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 1.25rem;
}

label {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  font-size: 0.88rem;
  color: var(--muted);
  font-weight: 500;
}

input, select, textarea, button {
  font: inherit;
  padding: 0.65rem 0.9rem;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--card-bg);
  color: var(--fg);
}

input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--sky-mid);
  box-shadow: 0 0 0 3px rgba(31, 111, 209, 0.15);
}

form.search-form input {
  border-radius: 999px;
  padding: 0.7rem 1.2rem;
}

button {
  background: var(--sunset);
  color: #fff;
  border: none;
  cursor: pointer;
  font-weight: 600;
  border-radius: 999px;
  transition: transform 0.1s ease, background 0.15s ease;
}
button:hover { background: var(--sunset-dark); transform: translateY(-1px); }
button:active { transform: translateY(0); }

button.danger-button { background: #c0392b; }
button.danger-button:hover { background: #a5291b; }

form.search-form button { flex-shrink: 0; }

/* --- Homepage city list --- */

.city-list { margin-top: 2rem; text-align: center; }
.city-list h2 { font-size: 1.15rem; color: var(--sky-mid); margin-bottom: 0.9rem; }
.city-list ul { list-style: none; padding: 0; display: flex; flex-wrap: wrap; gap: 0.6rem; justify-content: center; }
.city-list li {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.4rem 0.9rem;
}
.city-list a { color: var(--sky-mid); text-decoration: none; font-weight: 600; }
.city-list a:hover { text-decoration: underline; }
.city-list .count { color: var(--muted); font-size: 0.85rem; }

/* --- Suggestions dropdown --- */

.suggestions {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  z-index: 10;
  margin-top: 0.3rem;
  overflow: hidden;
  box-shadow: 0 8px 24px rgba(16, 43, 82, 0.12);
}

.suggestions div {
  padding: 0.6rem 1rem;
  cursor: pointer;
}
.suggestions div:hover { background: var(--bg); }

/* --- Tip cards --- */

h1 { font-size: 1.6rem; }

.tip-grid {
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
}

.tip-card {
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1rem 1.15rem;
  background: var(--card-bg);
  box-shadow: 0 2px 10px rgba(16, 43, 82, 0.06);
  transition: transform 0.12s ease, box-shadow 0.12s ease;
}
.tip-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(16, 43, 82, 0.12);
}

.tip-card-warning {
  border-color: var(--warning-accent);
  border-left: 4px solid var(--warning-accent);
}

.tip-card-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.tip-category {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.8rem;
  font-weight: 700;
  padding: 0.25rem 0.65rem;
  border-radius: 999px;
}

.tip-category-food { background: var(--cat-food-bg); color: var(--cat-food-fg); }
.tip-category-activity { background: var(--cat-activity-bg); color: var(--cat-activity-fg); }
.tip-category-coffee { background: var(--cat-coffee-bg); color: var(--cat-coffee-fg); }
.tip-category-practical { background: var(--cat-practical-bg); color: var(--cat-practical-fg); }
.tip-category-other { background: var(--cat-other-bg); color: var(--cat-other-fg); }
.tip-category-warning { background: var(--cat-warning-bg); color: var(--cat-warning-fg); }

.tip-walk {
  font-size: 0.82rem;
  color: var(--muted);
  font-weight: 600;
}

.tip-hotel {
  font-weight: 700;
  margin-top: 0.55rem;
  color: var(--sky-mid);
}
.tip-note { margin: 0.4rem 0 0.2rem; }
.tip-meta { font-size: 0.78rem; color: var(--muted); }

.tip-card-wrapper { display: flex; flex-direction: column; gap: 0.4rem; }
.edit-link {
  align-self: flex-start;
  font-size: 0.85rem;
  color: var(--sky-mid);
  font-weight: 600;
  text-decoration: none;
}
.edit-link:hover { text-decoration: underline; }

.empty-state {
  color: var(--muted);
  text-align: center;
  padding: 2rem 1rem;
  border: 1px dashed var(--border);
  border-radius: 14px;
  font-size: 1.05rem;
}

.error {
  color: var(--sunset-dark);
  background: var(--cat-food-bg);
  padding: 0.6rem 0.9rem;
  border-radius: 10px;
  font-weight: 500;
}

.success-banner {
  color: var(--cat-activity-fg);
  background: var(--cat-activity-bg);
  padding: 0.6rem 0.9rem;
  border-radius: 10px;
  font-weight: 500;
}

.invite-url {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.85rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.75rem 1rem;
  word-break: break-all;
  user-select: all;
}

.tip-reactions {
  display: flex;
  gap: 0.4rem;
  margin-top: 0.75rem;
  padding-top: 0.65rem;
  border-top: 1px solid var(--border);
}

.reaction-btn {
  background: var(--bg);
  color: var(--muted);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.3rem 0.6rem;
  font-size: 0.82rem;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
}
.reaction-btn:hover { background: var(--card-bg); transform: none; }

.reaction-btn.reaction-active {
  background: var(--sky-mid);
  color: #fff;
  border-color: var(--sky-mid);
}

.reaction-count {
  min-width: 0.9em;
  display: inline-block;
  text-align: left;
}