/* Self-hosted fonts — works offline via service worker */
@font-face {
  font-family: 'Space Grotesk';
  font-style: normal;
  font-weight: 600 700;
  font-display: swap;
  src: url('./fonts/space-grotesk-latin-ext.woff2') format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: 'Space Grotesk';
  font-style: normal;
  font-weight: 600 700;
  font-display: swap;
  src: url('./fonts/space-grotesk-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'DM Sans';
  font-style: normal;
  font-weight: 400 600;
  font-display: swap;
  src: url('./fonts/dm-sans-latin-ext.woff2') format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: 'DM Sans';
  font-style: normal;
  font-weight: 400 600;
  font-display: swap;
  src: url('./fonts/dm-sans-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

/* =============================================
   Nebula Design Tokens — Liquid Glass Edition
   ============================================= */
:root {
  --font-heading: 'Space Grotesk', sans-serif;
  --font-body: 'DM Sans', sans-serif;

  --h1: clamp(2rem, 8vw, 3.5rem);
  --h2: clamp(1.5rem, 6vw, 2rem);
  --h3: clamp(1.25rem, 4vw, 1.5rem);
  --text-base: clamp(1rem, 1.2vw, 1.125rem);
  --text-sm: clamp(0.875rem, 1vw, 1rem);

  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: clamp(0.75rem, 2vw, 1rem);
  --space-5: 1.25rem;
  --space-6: clamp(1rem, 3vw, 1.5rem);
  --space-8: clamp(1.5rem, 4vw, 2rem);
  --space-12: 3rem;

  --radius-pill: 9999px;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;

  --spring: cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* Dark — Obsidian */
[data-theme="dark"] {
  --color-bg: #08080F;
  --color-surface: rgba(255, 255, 255, 0.07);
  --color-surface-secondary: rgba(255, 255, 255, 0.04);
  --color-border: rgba(255, 255, 255, 0.12);
  --color-primary: #60A5FA;
  --color-text-primary: #F1F5F9;
  --color-text-secondary: #94A3B8;

  --glass-blur: blur(48px) saturate(180%);
  --glass-specular: linear-gradient(135deg, rgba(255,255,255,0.12) 0%, rgba(255,255,255,0.03) 45%, transparent 70%);
  --shadow-card:
    inset 0 1px 0 rgba(255, 255, 255, 0.18),
    inset 0 -1px 0 rgba(0, 0, 0, 0.15),
    0 8px 40px rgba(0, 0, 0, 0.55),
    0 2px 12px rgba(0, 0, 0, 0.3);
  --shadow-tile:
    inset 0 1px 0 rgba(255, 255, 255, 0.1),
    0 2px 8px rgba(0, 0, 0, 0.25);
}

/* Light — Pearl */
[data-theme="light"] {
  --color-bg: #EEF2F8;
  --color-surface: rgba(255, 255, 255, 0.68);
  --color-surface-secondary: rgba(255, 255, 255, 0.48);
  --color-border: rgba(255, 255, 255, 0.88);
  --color-primary: #3B82F6;
  --color-text-primary: #1E293B;
  --color-text-secondary: #64748B;

  --glass-blur: blur(32px) saturate(150%);
  --glass-specular: linear-gradient(135deg, rgba(255,255,255,0.88) 0%, rgba(255,255,255,0.2) 45%, transparent 70%);
  --shadow-card:
    inset 0 1px 0 rgba(255, 255, 255, 0.95),
    inset 0 -1px 0 rgba(0, 0, 0, 0.04),
    0 8px 32px rgba(0, 0, 0, 0.08),
    0 2px 8px rgba(0, 0, 0, 0.05);
  --shadow-tile:
    inset 0 1px 0 rgba(255, 255, 255, 0.8),
    0 2px 6px rgba(0, 0, 0, 0.05);
}

/* =============================================
   Base & Layout
   ============================================= */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  background-color: var(--color-bg);
  color: var(--color-text-primary);
  min-height: 100vh;
  overflow-x: hidden;
  transition: background-color 0.5s ease;
}

.container {
  width: 100%;
  max-width: 64rem;
  margin: 0 auto;
  padding: var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

@media (min-width: 768px) {
  .container { padding: var(--space-8) var(--space-4); }
}

.hidden { display: none !important; }

/* =============================================
   Aurora Background
   ============================================= */
.bg-decor {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  overflow: hidden;
}

.aurora-blob {
  position: absolute;
  width: 70vw;
  height: 70vw;
  border-radius: 50%;
  filter: blur(140px);
  opacity: 0.12;
  mix-blend-mode: screen;
  animation: drift 25s linear infinite;
  transition: background 1.5s ease;
}

.blob-1 { background: var(--color-primary); top: -25%; right: -15%; }

@keyframes drift {
  0%   { transform: translate(0, 0) scale(1); }
  33%  { transform: translate(5%, 10%) scale(1.1); }
  66%  { transform: translate(-5%, 5%) scale(0.9); }
  100% { transform: translate(0, 0) scale(1); }
}

/* =============================================
   Liquid Glass Card
   ============================================= */
.glass-card {
  position: relative;
  background: var(--glass-specular), var(--color-surface);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-radius: var(--radius-2xl);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-card);
  padding: var(--space-6);
  width: 100%;
}

/* =============================================
   Header
   ============================================= */
.site-header {
  padding: var(--space-6) var(--space-4);
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: 64rem;
  margin: 0 auto;
}

@media (min-width: 768px) {
  .site-header { padding: var(--space-8) var(--space-4); }
}

.nav-brand {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.75rem;
  letter-spacing: -0.05em;
  color: var(--color-primary);
  opacity: 0.6;
  user-select: none;
}

@media (min-width: 768px) {
  .nav-brand { font-size: 2rem; }
}

/* =============================================
   Inputs & Buttons
   ============================================= */
.input {
  background: var(--color-surface);
  backdrop-filter: blur(24px) saturate(160%);
  -webkit-backdrop-filter: blur(24px) saturate(160%);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.2),
    inset 0 2px 6px rgba(0, 0, 0, 0.08);
  padding: 0.875rem 1.5rem;
  color: var(--color-text-primary);
  font-family: var(--font-body);
  font-size: 1rem;
  transition: border-color 0.3s var(--spring), transform 0.3s var(--spring);
  width: 100%;
}

[data-theme="light"] .input {
  background: rgba(255, 255, 255, 0.7);
  border-color: rgba(255, 255, 255, 0.9);
}

.input::placeholder { color: var(--color-text-secondary); opacity: 0.8; }

.input:focus {
  outline: none;
  border-color: var(--color-primary);
  transform: scale(1.01);
}

@media (max-width: 639px) {
  .input:focus { transform: none; }
}

.btn {
  border-radius: var(--radius-pill);
  padding: 0.875rem 1.5rem;
  border: none;
  cursor: pointer;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 1rem;
  transition: filter 0.2s ease, transform 0.2s var(--spring), background 0.2s ease, border-color 0.2s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  white-space: nowrap;
}

.btn:active { transform: scale(0.95); }

.btn-primary {
  background: var(--color-primary);
  color: #fff;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.25),
    0 4px 16px rgba(0, 0, 0, 0.2);
}

.btn-primary:hover { filter: brightness(1.08); }

.btn-ghost {
  background: var(--color-surface);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--color-border);
  color: var(--color-text-primary);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.15);
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.25);
}

[data-theme="light"] .btn-ghost:hover {
  background: rgba(255, 255, 255, 0.75);
}

/* =============================================
   Search
   ============================================= */
.search-box {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: var(--space-2);
  width: 100%;
}

.search-box .input { flex: 1; }

/* Mobile: compact circular icon-only buttons */
@media (max-width: 639px) {
  #searchBtn,
  .location-btn {
    width: 3rem;
    height: 3rem;
    padding: 0;
    border-radius: 50%;
    flex-shrink: 0;
  }
  .search-btn-label,
  .location-btn-label { display: none; }
}

.location-btn { flex-shrink: 0; }
.location-btn:disabled { opacity: 0.5; cursor: not-allowed; }
.location-btn .ri-loader-4-line { animation: spin 0.8s linear infinite; }

@keyframes spin {
  to { transform: rotate(360deg); }
}

@media (min-width: 640px) {
  .search-box { gap: var(--space-4); }
}

@media (min-width: 768px) {
  .search-box {
    max-width: 42rem;
    margin-left: auto;
    margin-right: auto;
  }
}

/* =============================================
   Weather Card
   ============================================= */
.weather-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
  transition: opacity 0.4s ease;
}

.weather-main {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: var(--space-4);
}

@media (min-width: 768px) {
  .weather-main {
    flex-direction: row;
    align-items: center;
    text-align: left;
    gap: var(--space-8);
  }
}

.weather-icon-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  width: 5rem;
  height: 5rem;
}

.weather-icon-main {
  font-size: 3rem;
  color: var(--color-primary);
}

@media (min-width: 768px) {
  .weather-icon-wrap { width: 7rem; height: 7rem; }
  .weather-icon-main { font-size: 4rem; }
}

.weather-info {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  width: 100%;
}

@media (min-width: 768px) {
  .weather-info { flex: 1; min-width: 0; }
}

.weather-info-top {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: var(--space-4);
}

.weather-info-text { text-align: center; }

@media (min-width: 768px) {
  .weather-info-top { justify-content: space-between; }
  .weather-info-text { text-align: left; }
}

.city-name {
  font-family: var(--font-heading);
  font-size: var(--h2);
  line-height: 1.15;
  margin-bottom: 0.25rem;
}

.weather-desc {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
  text-transform: capitalize;
  letter-spacing: 0.02em;
}

.temp-block {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
}

@media (min-width: 768px) {
  .temp-block { align-items: flex-start; }
}

.main-temp {
  font-family: var(--font-heading);
  font-size: clamp(3.5rem, 12vw, 5.5rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.04em;
}

.high-low {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.temp-high,
.temp-low {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  font-family: var(--font-heading);
  font-size: 0.9375rem;
  font-weight: 700;
}

.temp-high { color: var(--color-primary); }
.temp-low  { color: var(--color-text-secondary); }

.temp-high i,
.temp-low i { font-size: 0.85em; }

/* Sunrise / Sunset */
.sun-times {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding-top: var(--space-5);
  border-top: 1px solid var(--color-border);
}

.sun-item {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
}

.sun-item i {
  font-size: 1.1rem;
  color: var(--color-primary);
  opacity: 0.75;
  flex-shrink: 0;
}

.sun-label {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.sun-time {
  font-family: var(--font-heading);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-text-primary);
}

/* Daytime progress track */
.sun-track {
  flex: 1;
  position: relative;
  height: 3px;
  background: var(--color-border);
  border-radius: var(--radius-pill);
  overflow: visible;
}

.sun-track-fill {
  position: absolute;
  left: 0;
  top: 0;
  height: 100%;
  background: var(--color-primary);
  border-radius: var(--radius-pill);
  opacity: 0.6;
  transition: width 0.8s ease;
}

.sun-track-fill::after {
  content: '';
  position: absolute;
  right: -3px;
  top: 50%;
  transform: translateY(-50%);
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--color-primary);
  box-shadow: 0 0 6px var(--color-primary);
}

/* Details Grid */
.details-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-3);
  border-top: 1px solid var(--color-border);
  padding-top: var(--space-6);
}

.detail-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-2);
  background: var(--color-surface-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-tile);
  text-align: center;
}

@media (min-width: 640px) {
  .detail-item { padding: var(--space-4) var(--space-3); }
}

.detail-item i {
  font-size: 1.25rem;
  color: var(--color-primary);
}

.detail-item .label {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--color-text-secondary);
}

.detail-item .value {
  font-family: var(--font-heading);
  font-size: 1.125rem;
  font-weight: 700;
}

/* =============================================
   Forecast
   ============================================= */
.forecast-container {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.section-title {
  font-family: var(--font-heading);
  font-size: var(--h3);
  letter-spacing: -0.02em;
}

.forecast-list {
  display: flex;
  gap: var(--space-3);
  overflow-x: auto;
  padding-bottom: var(--space-2);
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
  mask-image: linear-gradient(to right, black calc(100% - 3rem), transparent 100%);
  -webkit-mask-image: linear-gradient(to right, black calc(100% - 3rem), transparent 100%);
}

.forecast-list::-webkit-scrollbar { display: none; }

@media (min-width: 768px) {
  .forecast-list {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    overflow-x: visible;
    padding-bottom: 0;
    mask-image: none;
    -webkit-mask-image: none;
  }
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}

.forecast-card {
  min-width: 7.5rem;
  flex: 0 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-3);
  text-align: center;
  background: var(--color-surface-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-tile);
  padding: var(--space-5) var(--space-4);
  animation: fadeUp 0.35s var(--spring) both;
}

.forecast-card.today {
  border-top: 2px solid var(--color-primary);
  background: linear-gradient(180deg, rgba(96,165,250,0.08) 0%, var(--color-surface-secondary) 60%);
}

[data-theme="light"] .forecast-card.today {
  background: linear-gradient(180deg, rgba(59,130,246,0.07) 0%, var(--color-surface-secondary) 60%);
}

@media (min-width: 768px) {
  .forecast-card { min-width: unset; flex: unset; }
}

.forecast-day {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text-secondary);
}

.forecast-card.today .forecast-day {
  color: var(--color-primary);
}

.forecast-date {
  font-size: 0.7rem;
  font-weight: 400;
  color: var(--color-text-secondary);
  opacity: 0.65;
  margin-top: -0.25rem;
}

.forecast-icon {
  font-size: 2rem;
  color: var(--color-primary);
}

.forecast-temps {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.2rem;
  margin-top: auto;
}

.forecast-high {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  font-family: var(--font-heading);
  font-size: 1.125rem;
  font-weight: 700;
}

.forecast-low {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--color-text-secondary);
}

.forecast-high i,
.forecast-low i { font-size: 0.85em; }

.forecast-rain {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--color-primary);
  opacity: 0.85;
}

.forecast-rain i { font-size: 0.8em; }

/* Last Updated */
.last-updated {
  font-size: 0.72rem;
  color: var(--color-text-secondary);
  opacity: 0.6;
  text-align: right;
  padding-top: var(--space-3);
  border-top: 1px solid var(--color-border);
}

.refresh-nudge {
  background: none;
  border: none;
  color: var(--color-primary);
  font-size: inherit;
  font-family: inherit;
  cursor: pointer;
  padding: 0;
  opacity: 0.9;
  text-decoration: underline;
  text-underline-offset: 2px;
}

.refresh-nudge:hover { opacity: 1; }

/* =============================================
   Save Button & Favorites
   ============================================= */

.save-city-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  width: 2.25rem;
  height: 2.25rem;
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-border);
  background: var(--color-surface-secondary);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.15);
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease, transform 0.15s ease;
}

.save-city-btn i { font-size: 1.1rem; }

.save-city-btn:hover {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.25), 0 4px 12px rgba(0,0,0,0.2);
}

.save-city-btn:active { transform: scale(0.88); }

/* Mobile: float save button to card corner — must come after base rule */
@media (max-width: 767px) {
  .save-city-btn {
    position: absolute;
    top: var(--space-5);
    right: var(--space-5);
  }
}

.favorites {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.fav-btn {
  background: var(--color-surface-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.12);
  padding: 0.5rem 1rem;
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-body);
  font-size: 0.875rem;
  color: var(--color-text-primary);
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.fav-btn:hover {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
}

/* =============================================
   Loader
   ============================================= */
.loader-container {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: var(--space-12);
  gap: var(--space-3);
}

.loader {
  width: 0.75rem;
  height: 0.75rem;
  border-radius: 50%;
  background-color: var(--color-primary);
  animation: pulse 1.4s infinite ease-in-out both;
}

.loader:nth-child(1) { animation-delay: -0.32s; }
.loader:nth-child(2) { animation-delay: -0.16s; }

@keyframes pulse {
  0%, 80%, 100% { transform: scale(0); opacity: 0.4; }
  40% { transform: scale(1); opacity: 1; }
}

/* =============================================
   Error
   ============================================= */
.error {
  color: #f87171;
  background: rgba(248, 113, 113, 0.1);
  border: 1px solid rgba(248, 113, 113, 0.2);
  padding: var(--space-4);
  border-radius: var(--radius-xl);
  text-align: center;
  font-weight: 500;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}