/* K-Weather CSS Stylesheet */
/* Premium Glassmorphism Theme (Dark-mode default) */

/* Core Variables & Tokens */
:root {
  --bg-primary: #0a0c16;
  --bg-secondary: #111322;
  --text-primary: #ffffff;
  --text-secondary: #9aa0c2;
  --text-muted: #646a8a;
  
  --accent-blue: #00d2ff;
  --accent-blue-rgb: 0, 210, 255;
  --accent-purple: #9c27b0;
  --accent-orange: #ff9800;
  
  /* Glassmorphism settings */
  --glass-bg: rgba(255, 255, 255, 0.03);
  --glass-bg-hover: rgba(255, 255, 255, 0.07);
  --glass-border: rgba(255, 255, 255, 0.08);
  --glass-border-hover: rgba(255, 255, 255, 0.2);
  --glass-blur: blur(16px);
  --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);

  /* Weather status gradient borders */
  --glow-clear: 0 0 15px rgba(255, 179, 0, 0.4);
  --glow-clouds: 0 0 15px rgba(176, 190, 197, 0.3);
  --glow-rain: 0 0 15px rgba(2, 136, 209, 0.4);
  --glow-snow: 0 0 15px rgba(255, 255, 255, 0.4);
  --glow-mist: 0 0 15px rgba(144, 164, 174, 0.3);
}

/* Global Reset */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Inter', sans-serif;
  -webkit-font-smoothing: antialiased;
}

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
}

/* Decorative Background Glows */
.bg-glow {
  position: absolute;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.15;
  z-index: -1;
  pointer-events: none;
}

.bg-glow-1 {
  background: radial-gradient(circle, #ff007b 0%, transparent 70%);
  top: 10%;
  left: -100px;
  animation: pulseGlow 15s ease-in-out infinite alternate;
}

.bg-glow-2 {
  background: radial-gradient(circle, #00f2fe 0%, transparent 70%);
  bottom: 20%;
  right: -100px;
  animation: pulseGlow 20s ease-in-out infinite alternate-reverse;
}

.bg-glow-3 {
  background: radial-gradient(circle, #7928ca 0%, transparent 70%);
  top: 50%;
  left: 30%;
  opacity: 0.1;
}

@keyframes pulseGlow {
  0% { transform: scale(1) translate(0, 0); opacity: 0.1; }
  100% { transform: scale(1.3) translate(30px, -30px); opacity: 0.2; }
}

/* Scrollbar Style */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
::-webkit-scrollbar-track {
  background: rgba(255, 255, 255, 0.02);
}
::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.1);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.2);
}

/* Layout container */
.app-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 2.5rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
}

/* Header */
.app-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--glass-border);
  padding-bottom: 1.5rem;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.logo-text {
  font-family: 'Outfit', sans-serif;
  font-size: 2.5rem;
  font-weight: 800;
  letter-spacing: -1.5px;
  background: linear-gradient(135deg, #00f2fe 0%, #4facfe 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

.logo-sub {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-top: 0.2rem;
  font-weight: 400;
}

.header-clock {
  text-align: right;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  padding: 0.75rem 1.25rem;
  border-radius: 16px;
  backdrop-filter: var(--glass-blur);
  box-shadow: var(--glass-shadow);
}

.clock-time {
  font-family: 'Outfit', monospace;
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: 1px;
  color: var(--accent-blue);
  text-shadow: 0 0 10px rgba(0, 210, 255, 0.3);
}

.clock-date {
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-top: 0.2rem;
}

/* Overview Section */
.overview-section {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.section-title {
  font-family: 'Outfit', sans-serif;
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: -0.5px;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.overview-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.25rem;
}

.overview-card {
  position: relative;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  padding: 1.25rem;
  border-radius: 20px;
  backdrop-filter: var(--glass-blur);
  box-shadow: var(--glass-shadow);
  display: flex;
  align-items: center;
  gap: 1rem;
  overflow: hidden;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.overview-card:hover {
  transform: translateY(-2px);
  border-color: var(--glass-border-hover);
  background: var(--glass-bg-hover);
}

.card-icon {
  font-size: 2rem;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 12px;
}

.card-info {
  display: flex;
  flex-direction: column;
}

.card-label {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.card-value {
  font-size: 1.2rem;
  font-weight: 700;
  font-family: 'Outfit', sans-serif;
  color: var(--text-primary);
  margin-top: 0.15rem;
}

/* Controls Section */
.controls-section {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.search-bar-wrapper {
  position: relative;
  flex: 1;
  min-width: 280px;
}

.search-icon {
  position: absolute;
  left: 1.25rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-secondary);
  font-size: 1rem;
}

.clear-btn {
  position: absolute;
  right: 1.25rem;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 0;
  line-height: 1;
}

.clear-btn:hover {
  color: var(--text-primary);
}

#search-input {
  width: 100%;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  padding: 0.85rem 1rem 0.85rem 2.8rem;
  border-radius: 50px;
  color: var(--text-primary);
  font-size: 0.95rem;
  backdrop-filter: var(--glass-blur);
  transition: all 0.3s;
}

#search-input:focus {
  outline: none;
  border-color: var(--accent-blue);
  box-shadow: 0 0 15px rgba(0, 210, 255, 0.2);
  background: rgba(255, 255, 255, 0.05);
}

.filter-wrapper {
  display: flex;
  gap: 0.5rem;
  overflow-x: auto;
  padding-bottom: 0.25rem;
  max-width: 100%;
}

.filter-btn {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  color: var(--text-secondary);
  padding: 0.6rem 1.1rem;
  border-radius: 50px;
  cursor: pointer;
  font-size: 0.85rem;
  font-weight: 500;
  transition: all 0.2s ease;
  white-space: nowrap;
}

.filter-btn:hover {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-primary);
  border-color: var(--glass-border-hover);
}

.filter-btn.active {
  background: linear-gradient(135deg, #00f2fe 0%, #4facfe 100%);
  color: var(--bg-primary);
  font-weight: 700;
  border-color: transparent;
  box-shadow: 0 4px 15px rgba(0, 210, 255, 0.3);
}

.refresh-btn {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  color: var(--text-primary);
  padding: 0.65rem 1.25rem;
  border-radius: 50px;
  cursor: pointer;
  font-size: 0.9rem;
  font-weight: 600;
  backdrop-filter: var(--glass-blur);
  transition: all 0.3s;
}

.refresh-btn:hover {
  background: var(--glass-bg-hover);
  border-color: var(--glass-border-hover);
  box-shadow: 0 4px 15px rgba(255,255,255,0.05);
}

.refresh-btn:active {
  transform: scale(0.97);
}

.refresh-icon.rotating {
  animation: rotateLoader 1s linear infinite;
}

@keyframes rotateLoader {
  100% { transform: rotate(360deg); }
}

/* Grid/Main weather section */
.grid-section {
  position: relative;
  min-height: 300px;
  display: flex;
  flex-direction: column;
}

/* Loading overlay for startup */
.loader-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  z-index: 10;
  background: var(--bg-primary);
  border-radius: 20px;
}

.spinner {
  width: 48px;
  height: 48px;
  border: 3px solid rgba(0, 210, 255, 0.1);
  border-top-color: var(--accent-blue);
  border-radius: 50%;
  animation: rotateLoader 1s cubic-bezier(0.5, 0, 0.5, 1) infinite;
}

.loader-overlay p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  font-weight: 500;
}

/* Error Container */
.error-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  text-align: center;
  padding: 3rem 1.5rem;
  background: rgba(239, 83, 80, 0.05);
  border: 1px solid rgba(239, 83, 80, 0.2);
  border-radius: 24px;
  margin: auto;
  max-width: 450px;
}

.error-icon {
  font-size: 3rem;
}

.error-container h3 {
  font-family: 'Outfit', sans-serif;
  font-size: 1.3rem;
  font-weight: 600;
}

.error-container p {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.retry-btn {
  background: var(--text-primary);
  color: var(--bg-primary);
  border: none;
  padding: 0.65rem 1.5rem;
  font-weight: 700;
  border-radius: 50px;
  cursor: pointer;
  margin-top: 0.5rem;
  transition: opacity 0.2s;
}

.retry-btn:hover {
  opacity: 0.9;
}

/* Cities Grid */
.cities-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
}

/* Weather Card */
.city-card {
  position: relative;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 24px;
  padding: 1.75rem;
  backdrop-filter: var(--glass-blur);
  box-shadow: var(--glass-shadow);
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  cursor: pointer;
  overflow: hidden;
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.city-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: transparent;
  transition: all 0.3s;
}

/* Card Weather Status Colors */
.city-card.card-clear::before { background: linear-gradient(90deg, #ff9800, #ffb300); }
.city-card.card-clear:hover { box-shadow: var(--glass-shadow), var(--glow-clear); }

.city-card.card-clouds::before { background: linear-gradient(90deg, #b0bec5, #eceff1); }
.city-card.card-clouds:hover { box-shadow: var(--glass-shadow), var(--glow-clouds); }

.city-card.card-rain::before { background: linear-gradient(90deg, #0288d1, #4fc3f7); }
.city-card.card-rain:hover { box-shadow: var(--glass-shadow), var(--glow-rain); }

.city-card.card-snow::before { background: linear-gradient(90deg, #e0f7fa, #ffffff); }
.city-card.card-snow:hover { box-shadow: var(--glass-shadow), var(--glow-snow); }

.city-card.card-mist::before { background: linear-gradient(90deg, #90a4ae, #b0bec5); }
.city-card.card-mist:hover { box-shadow: var(--glass-shadow), var(--glow-mist); }

.city-card:hover {
  transform: translateY(-6px);
  border-color: var(--glass-border-hover);
  background: var(--glass-bg-hover);
}

/* Card Interior Layout */
.card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
}

.card-title-ko {
  font-family: 'Outfit', sans-serif;
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: -0.5px;
}

.card-title-en {
  font-size: 0.85rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-top: 0.1rem;
}

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

.card-temp {
  font-family: 'Outfit', sans-serif;
  font-size: 2.8rem;
  font-weight: 800;
  letter-spacing: -2px;
}

.card-temp-unit {
  font-size: 1.5rem;
  font-weight: 500;
  vertical-align: super;
  margin-left: 2px;
}

.card-icon-container {
  display: flex;
  align-items: center;
  justify-content: center;
}

.card-footer {
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 1rem;
  display: flex;
  justify-content: space-between;
}

.footer-item {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.footer-label {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.footer-value {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-primary);
}

.card-desc {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  background: rgba(255, 255, 255, 0.05);
  padding: 0.25rem 0.6rem;
  border-radius: 50px;
  width: fit-content;
}

/* Modal Styling */
.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(5, 7, 18, 0.6);
  backdrop-filter: blur(12px) saturate(180%);
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.modal-backdrop.open {
  opacity: 1;
  visibility: visible;
}

.modal-card {
  background: rgba(18, 20, 36, 0.8);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 28px;
  width: 100%;
  max-width: 780px;
  padding: 2.25rem;
  position: relative;
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.5);
  backdrop-filter: var(--glass-blur);
  transform: translateY(20px);
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.modal-backdrop.open .modal-card {
  transform: translateY(0);
}

.modal-close {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--text-secondary);
  font-size: 1.8rem;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  padding-bottom: 4px;
  transition: all 0.2s;
}

.modal-close:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-primary);
  transform: scale(1.05);
}

/* Modal Header Layout */
.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  padding-bottom: 1.5rem;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
  gap: 1rem;
}

.modal-city-names {
  display: flex;
  align-items: flex-end;
  gap: 0.5rem;
}

.modal-city-names h2 {
  font-family: 'Outfit', sans-serif;
  font-size: 2.2rem;
  font-weight: 800;
  letter-spacing: -1px;
}

.modal-city-names span {
  color: var(--text-secondary);
  font-size: 1.1rem;
  text-transform: uppercase;
  margin-bottom: 0.3rem;
  font-weight: 500;
}

.modal-weather-desc {
  color: var(--accent-blue);
  font-size: 1rem;
  font-weight: 600;
  margin-top: 0.25rem;
  background: rgba(0, 210, 255, 0.1);
  padding: 0.2rem 0.75rem;
  border-radius: 50px;
  width: fit-content;
}

.modal-temp-wrapper {
  text-align: right;
  display: flex;
  flex-direction: column;
}

#modal-temp-current {
  font-family: 'Outfit', sans-serif;
  font-size: 2.6rem;
  font-weight: 800;
  letter-spacing: -1px;
}

.modal-feels-like {
  color: var(--text-secondary);
  font-size: 0.85rem;
  margin-top: 0.1rem;
}

/* Modal Body Columns */
.modal-body {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

@media (min-width: 680px) {
  .modal-body {
    grid-template-columns: 240px 1fr;
  }
}

/* Left side: parameters grid */
.modal-stats-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

@media (min-width: 680px) {
  .modal-stats-grid {
    grid-template-columns: 1fr;
  }
}

.modal-stat-item {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: 16px;
  padding: 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.stat-icon {
  font-size: 1.5rem;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.04);
  border-radius: 10px;
}

.stat-details {
  display: flex;
  flex-direction: column;
}

.stat-name {
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.stat-value {
  font-size: 0.95rem;
  font-weight: 700;
  font-family: 'Outfit', sans-serif;
  margin-top: 0.1rem;
}

/* Right side: 5-day / 3hr timeline chart scroll */
.forecast-timeline-container {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.forecast-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* Scrollable timeline strip */
.forecast-timeline {
  display: flex;
  gap: 0.75rem;
  overflow-x: auto;
  padding: 0.5rem 0.25rem 1rem 0.25rem;
  max-width: 100%;
}

.forecast-item {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: 16px;
  min-width: 100px;
  padding: 1rem 0.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 0.6rem;
  transition: all 0.3s;
}

.forecast-item:hover {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 255, 255, 0.15);
  transform: translateY(-2px);
}

.forecast-date {
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.forecast-time {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-primary);
}

.forecast-temp {
  font-family: 'Outfit', sans-serif;
  font-size: 1.15rem;
  font-weight: 700;
}

/* Mini Bar inside forecast card representing temperature level */
.forecast-temp-bar-container {
  width: 100%;
  height: 4px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 2px;
  overflow: hidden;
  margin-top: 0.25rem;
}

.forecast-temp-bar {
  height: 100%;
  background: linear-gradient(90deg, #00f2fe, #4facfe);
  border-radius: 2px;
  transition: width 0.5s ease-in-out;
}

.forecast-humid {
  font-size: 0.7rem;
  color: var(--text-muted);
}

/* Forecast Loader */
.forecast-loader {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  padding: 3rem 0;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.mini-spinner {
  width: 24px;
  height: 24px;
  border: 2px solid rgba(0, 210, 255, 0.1);
  border-top-color: var(--accent-blue);
  border-radius: 50%;
  animation: rotateLoader 1s linear infinite;
}

/* Footer styles */
.app-footer {
  margin-top: auto;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 2rem;
  display: flex;
  justify-content: space-between;
  color: var(--text-muted);
  font-size: 0.8rem;
  flex-wrap: wrap;
  gap: 1rem;
}

/* Responsive Overrides */
@media (max-width: 768px) {
  .app-header {
    flex-direction: column;
    align-items: flex-start;
  }
  .header-clock {
    text-align: left;
    width: 100%;
  }
  .controls-section {
    flex-direction: column;
    align-items: stretch;
  }
  .filter-wrapper {
    order: 2;
  }
  .refresh-btn {
    align-self: flex-end;
  }
  .app-footer {
    flex-direction: column;
    text-align: center;
    gap: 0.5rem;
  }
}