/* ============================================
   STYLES.CSS — Weather Dashboard
   Built on the same token system as the Week 5 portfolio (main.css) so
   this project reads as part of the same body of work: identical color
   variables, spacing/radius scale, and BEM naming (block__element--modifier).
   ============================================ */

/* ---------- CSS Variables (same tokens as main.css) ---------- */
:root {
  --color-bg: #f4f6fa;
  --color-surface: #ffffff;
  --color-surface-alt: #eef1f8;
  --color-text: #222222;
  --color-text-muted: #555555;
  --color-border: #cccccc;

  --color-primary: #4b6cb7;
  --color-primary-dark: #182848;
  --color-accent: #ff6b35;
  --color-accent-dark: #e0531f;
  --color-success: #2e9e5b;
  --color-danger: #d64545;
  --color-highlight: #ffd166;

  --gradient-navbar: linear-gradient(90deg, var(--color-primary), var(--color-primary-dark));
  --gradient-hero: linear-gradient(135deg, var(--color-primary) 0%, #6a4cb7 50%, var(--color-primary-dark) 100%);

  --space-xs: 0.4rem;
  --space-sm: 0.8rem;
  --space-md: 1.3rem;
  --space-lg: 2rem;
  --space-xl: 3.5rem;

  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 16px;
  --container-width: 1000px;

  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --duration-fast: 0.2s;
  --duration-base: 0.3s;

  /* Weather-specific accents, derived from the same palette */
  --color-sky-clear: linear-gradient(120deg, var(--color-highlight), var(--color-accent));
  --color-sky-cloudy: linear-gradient(120deg, #9db1cf, var(--color-primary));
  --color-sky-rain: linear-gradient(120deg, #5a8bc4, var(--color-primary-dark));
  --color-sky-storm: linear-gradient(120deg, #7a5fc7, var(--color-primary-dark));
  --color-sky-snow: linear-gradient(120deg, #dbe6f5, #9db1cf);
}

[data-theme="dark"] {
  --color-bg: #14171c;
  --color-surface: #1f242c;
  --color-surface-alt: #2a313c;
  --color-text: #e6e6e6;
  --color-text-muted: #cfd3da;
  --color-border: #444444;
}

/* ---------- Reset ---------- */
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

body {
  font-family: 'Segoe UI', Arial, sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  transition: background var(--duration-base) ease, color var(--duration-base) ease;
}

ul { list-style: none; }
a { color: inherit; }

a:focus-visible, button:focus-visible, input:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.sr-only {
  position: absolute; width: 1px; height: 1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}

/* ---------- Buttons (same block as main.css) ---------- */
.btn {
  border: none;
  border-radius: var(--radius-md);
  padding: 0.5rem 1rem;
  cursor: pointer;
  font-weight: 600;
  font-size: 0.85rem;
  font-family: inherit;
  transition: background var(--duration-fast) ease, transform var(--duration-fast) ease;
}
.btn--accent { background: var(--color-accent); color: #fff; }
.btn--accent:hover { background: var(--color-accent-dark); transform: translateY(-1px); }
.btn--accent:active { transform: translateY(0); }
.btn--ghost {
  background: rgba(255, 255, 255, 0.15);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.5);
}
.btn--ghost:hover { background: rgba(255, 255, 255, 0.28); }

/* ---------- Navbar: Flexbox (same pattern as the portfolio navbar) ---------- */
.navbar {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  padding: 1rem 1.2rem;
  background: var(--gradient-navbar);
  color: #fff;
  gap: var(--space-sm);
  position: sticky;
  top: 0;
  z-index: 20;
}

.navbar__logo { font-size: 1.3rem; font-weight: 700; letter-spacing: 0.5px; flex-shrink: 0; }
.navbar__logo-sub { font-weight: 400; opacity: 0.75; font-size: 0.85rem; }

.navbar__search { position: relative; flex: 1; min-width: 220px; max-width: 380px; display: flex; }
.navbar__search-input {
  width: 100%;
  padding: 0.5rem 2.4rem 0.5rem 0.8rem;
  border: none;
  border-radius: var(--radius-md);
  font-size: 0.88rem;
  background: rgba(255, 255, 255, 0.92);
  color: var(--color-text);
}
.navbar__search-btn {
  position: absolute; right: 0.2rem; top: 50%; transform: translateY(-50%);
  background: none; border: none; cursor: pointer; font-size: 0.95rem;
  width: 30px; height: 30px; border-radius: var(--radius-sm);
}
.navbar__search-results {
  position: absolute; top: calc(100% + 6px); left: 0; right: 0;
  background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: var(--radius-md); padding: 0.3rem; max-height: 260px;
  overflow-y: auto; box-shadow: 0 12px 28px rgba(0,0,0,0.2); z-index: 30;
}
.navbar__search-result {
  padding: 0.5rem 0.6rem; border-radius: var(--radius-sm);
  font-size: 0.85rem; color: var(--color-text-muted); cursor: pointer;
}
.navbar__search-result strong { color: var(--color-text); }
.navbar__search-result:hover, .navbar__search-result.is-active {
  background: var(--color-surface-alt); color: var(--color-text);
}

.navbar__controls { display: flex; align-items: center; gap: 0.6rem; flex-shrink: 0; margin-left: auto; }

.unit-toggle { display: flex; border-radius: var(--radius-md); overflow: hidden; border: 1px solid rgba(255,255,255,0.5); }
.unit-toggle__btn {
  background: transparent; border: none; color: #fff; padding: 0.5rem 0.65rem;
  font-size: 0.8rem; cursor: pointer; transition: background var(--duration-fast) ease;
}
.unit-toggle__btn.is-active { background: rgba(255,255,255,0.9); color: var(--color-primary-dark); font-weight: 700; }

.navbar__mode-btn {
  position: relative; background: none; border: 2px solid #fff; color: #fff;
  border-radius: 50%; width: 36px; height: 36px; cursor: pointer; font-size: 0.95rem;
  display: grid; place-items: center;
}
.navbar__mode-icon {
  position: absolute;
  transition: opacity var(--duration-fast) ease, transform var(--duration-fast) ease;
}
.navbar__mode-icon--sun { opacity: 0; transform: scale(0.6) rotate(45deg); }
[data-theme="light"] .navbar__mode-icon--moon { opacity: 1; transform: scale(1) rotate(0); }
[data-theme="light"] .navbar__mode-icon--sun { opacity: 0; }
[data-theme="dark"] .navbar__mode-icon--moon { opacity: 0; }
[data-theme="dark"] .navbar__mode-icon--sun { opacity: 1; transform: scale(1) rotate(0); }

/* ---------- Hero ---------- */
.hero {
  text-align: center;
  padding: 3rem 1rem 3.5rem;
  background: var(--gradient-hero);
  color: #fff;
}
.hero__title { font-size: 2rem; margin-bottom: 0.4rem; letter-spacing: 0.3px; }
.hero__subtitle { font-size: 0.98rem; opacity: 0.9; }

/* ---------- Tile grid: CSS Grid (same layout system as the portfolio) ---------- */
.tile-grid {
  max-width: var(--container-width);
  margin: -1.8rem auto 0;
  padding: 0 1.2rem 2rem;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
  position: relative;
  z-index: 2;
}
.tile-grid__tile {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: 1.6rem 1.8rem;
  box-shadow: 0 6px 18px rgba(30, 40, 70, 0.08);
  animation: fadeInUp 0.4s var(--ease-out) both;
}
.tile-grid__tile--wide { grid-column: span 2; }
.tile-grid__heading {
  margin-bottom: 1rem;
  border-left: 4px solid var(--color-primary);
  padding-left: 0.6rem;
  font-size: 1.1rem;
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 700px) {
  .tile-grid { grid-template-columns: 1fr; margin-top: -1.2rem; }
  .tile-grid__tile--wide { grid-column: span 1; }
}

/* ---------- Favorites: Flexbox chips ---------- */
.favorites__list { display: flex; flex-wrap: wrap; gap: 0.6rem; }
.favorites__empty { color: var(--color-text-muted); font-size: 0.85rem; font-style: italic; }
.favorite-chip {
  display: flex; align-items: center; gap: 0.5rem;
  background: var(--color-surface-alt); border: 1px solid var(--color-border);
  padding: 0.4rem 0.5rem 0.4rem 0.9rem; border-radius: 999px; font-size: 0.85rem;
  cursor: pointer; transition: background var(--duration-fast) ease, border-color var(--duration-fast) ease;
}
.favorite-chip:hover { border-color: var(--color-primary); background: var(--color-surface); }
.favorite-chip__remove {
  background: var(--color-danger); color: #fff; border: none; border-radius: 50%;
  width: 20px; height: 20px; font-size: 0.75rem; line-height: 1; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: background var(--duration-fast) ease, transform var(--duration-fast) ease;
}
.favorite-chip__remove:hover { background: #b53838; transform: scale(1.05); }

/* ---------- State panels (loading / error / empty) ---------- */
.state-panel {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 0.6rem; text-align: center; color: var(--color-text-muted); padding: 2.6rem 1rem !important;
}
.state-panel__hint { color: var(--color-text-muted); font-size: 0.85rem; opacity: 0.85; }
.state-panel--error { color: var(--color-danger); }

/* Any element with the [hidden] attribute must stay hidden, even when it
   also carries a class (like .state-panel) that sets its own `display`.
   Author rules normally beat the browser's built-in [hidden]{display:none}
   default, so without this, loading/error/empty panels can render at the
   same time instead of one-at-a-time. */
[hidden] { display: none !important; }

.spinner {
  width: 32px; height: 32px; border-radius: 50%;
  border: 3px solid var(--color-border); border-top-color: var(--color-primary);
  animation: spin 900ms linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ---------- Now card ---------- */
.now-card { background: var(--gradient-hero); color: #fff; }
.now-card__place { display: flex; justify-content: space-between; align-items: flex-start; gap: 1rem; flex-wrap: wrap; margin-bottom: 0.8rem; }
.now-card__city { font-size: 1.4rem; }
.now-card__meta { opacity: 0.85; font-size: 0.85rem; margin-top: 0.2rem; }

.favorite-btn {
  display: flex; align-items: center; gap: 0.4rem;
  background: rgba(255,255,255,0.15); border: 1px solid rgba(255,255,255,0.5); color: #fff;
  padding: 0.4rem 0.8rem; border-radius: 999px; font-size: 0.8rem; cursor: pointer;
  transition: background var(--duration-fast) ease;
}
.favorite-btn:hover { background: rgba(255,255,255,0.28); }
.favorite-btn[aria-pressed="true"] { background: var(--color-highlight); color: var(--color-primary-dark); border-color: var(--color-highlight); font-weight: 700; }

.now-card__reading { display: flex; align-items: center; gap: 0.7rem; }
.now-card__icon { font-size: 2.8rem; }
.now-card__temp { font-size: 3.4rem; font-weight: 700; letter-spacing: -0.01em; }
.now-card__condition { font-size: 1rem; margin-top: 0.2rem; text-transform: capitalize; }
.now-card__feels { opacity: 0.85; font-size: 0.85rem; margin-top: 0.2rem; }

/* ---------- Instrument tiles: CSS Grid ---------- */
.instruments { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0.7rem; }
.instrument {
  background: var(--color-surface-alt); border-radius: var(--radius-md);
  padding: 0.8rem 0.9rem; display: flex; flex-direction: column; gap: 0.2rem;
}
.instrument__label { color: var(--color-text-muted); font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.06em; }
.instrument__value { font-size: 1.3rem; font-weight: 700; color: var(--color-primary); }
[data-theme="dark"] .instrument__value { color: var(--color-highlight); }
.instrument__value--sm { font-size: 1rem; }
.instrument__value small, .instrument__unit-small { font-size: 0.78rem; color: var(--color-text-muted); font-weight: 400; }

/* ---------- Forecast strip: Flexbox ---------- */
.forecast { display: flex; flex-wrap: wrap; gap: 0.6rem; }
.forecast__day {
  flex: 1 1 90px;
  background: var(--color-surface-alt); border-radius: var(--radius-md);
  padding: 0.8rem 0.5rem; text-align: center;
  transition: transform var(--duration-fast) ease, box-shadow var(--duration-fast) ease;
}
.forecast__day:hover { transform: translateY(-2px); box-shadow: 0 6px 14px rgba(30,40,70,0.1); }
.forecast__day-name { display: block; font-size: 0.78rem; color: var(--color-text-muted); font-weight: 600; }
.forecast__day-icon { display: block; font-size: 1.4rem; margin: 0.3rem 0; }
.forecast__day-high { font-weight: 700; }
.forecast__day-low { color: var(--color-text-muted); font-size: 0.85rem; }
.forecast__day-rain { display: block; font-size: 0.7rem; color: var(--color-primary); margin-top: 0.2rem; }
[data-theme="dark"] .forecast__day-rain { color: var(--color-highlight); }

/* ---------- Footer ---------- */
.site-footer { text-align: center; padding: 1.3rem; }
.site-footer__text { color: var(--color-text-muted); font-size: 0.82rem; }
.site-footer__text a { color: var(--color-primary); font-weight: 600; text-decoration: underline; }
[data-theme="dark"] .site-footer__text a { color: var(--color-highlight); }

/* ---------- Responsive ---------- */
@media (max-width: 700px) {
  .navbar { justify-content: center; }
  .navbar__controls { margin-left: 0; width: 100%; justify-content: space-between; }
  .now-card__temp { font-size: 2.6rem; }
  .instruments { grid-template-columns: 1fr 1fr; }
}