@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

:root {
  --bg-primary: #f5f0eb;
  --bg-card: #ffffff;
  --bg-card-alt: #faf8f5;
  --bg-input: #f7f4f0;
  --bg-input-focus: #ffffff;
  --bg-accent: #1a1a2e;

  --text-primary: #1a1a2e;
  --text-secondary: #6b6b80;
  --text-tertiary: #9d9daa;
  --text-inverse: #ffffff;

  --accent: #4361ee;
  --accent-light: #e8ecfe;
  --accent-hover: #3451de;
  --accent-glow: 0 4px 14px rgba(67, 97, 238, 0.25);

  --warm: #ff6b35;
  --warm-light: #fff1eb;
  --cool: #4361ee;
  --cool-light: #e8ecfe;

  --shadow-sm: 0 1px 3px rgba(26, 26, 46, 0.04);
  --shadow-md: 0 4px 16px rgba(26, 26, 46, 0.06);
  --shadow-lg: 0 12px 40px rgba(26, 26, 46, 0.08);
  --shadow-xl: 0 20px 60px rgba(26, 26, 46, 0.10);

  --r-sm: 12px;
  --r-md: 16px;
  --r-lg: 20px;
  --r-xl: 28px;
  --r-pill: 100px;

  --ease: cubic-bezier(0.25, 1, 0.5, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --dur: 300ms;
  --dur-slow: 500ms;
}

*, *::before, *::after {
  margin: 0; padding: 0; box-sizing: border-box;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  line-height: 1.5;
}

body::before {
  content: '';
  position: fixed;
  top: -200px;
  right: -200px;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(67, 97, 238, 0.06) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}

body::after {
  content: '';
  position: fixed;
  bottom: -300px;
  left: -200px;
  width: 700px;
  height: 700px;
  background: radial-gradient(circle, rgba(255, 107, 53, 0.04) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}

header.primary {
  position: relative;
  z-index: 1;
  padding: 2rem 2rem 0;
  max-width: 1120px;
  margin: 0 auto;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.header-brand {
  display: flex;
  align-items: center;
  gap: 0.65rem;
}

.header-brand .brand-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent);
  animation: pulse 3s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50%      { transform: scale(1.3); opacity: 0.6; }
}

header h1 {
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

.header-right {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.header-subtitle {
  font-size: 0.78rem;
  color: var(--text-tertiary);
  font-weight: 400;
}

#unit_toggle {
  background: var(--bg-card);
  border: 1.5px solid rgba(26, 26, 46, 0.08);
  border-radius: var(--r-pill);
  padding: 0.45rem 1rem;
  font-family: 'Inter', sans-serif;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition: all var(--dur) var(--ease);
}

#unit_toggle:hover {
  border-color: var(--accent);
  color: var(--accent);
  box-shadow: var(--accent-glow);
  transform: translateY(-1px);
}

#unit_toggle:active {
  transform: translateY(0) scale(0.97);
}

main.grid-x {
  position: relative;
  z-index: 1;
  max-width: 1120px;
  margin: 0 auto;
  padding: 1.5rem 2rem 3rem;
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 1.5rem;
  align-items: start;
}

.card {
  background: var(--bg-card);
  border: 1.5px solid rgba(26, 26, 46, 0.05);
  border-radius: var(--r-xl);
  box-shadow: var(--shadow-md);
  transition: box-shadow var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.search_div {
  background: var(--bg-card);
  border: 1.5px solid rgba(26, 26, 46, 0.05);
  border-radius: var(--r-xl);
  padding: 1.75rem;
  box-shadow: var(--shadow-md);
  height: fit-content;
  position: sticky;
  top: 1.5rem;
}

.search_div .panel-label {
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-tertiary);
  margin-bottom: 1rem;
}

.search_div form {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

#city_select,
#city_input,
#select_country {
  padding: 0.75rem 1rem;
  border: 1.5px solid rgba(26, 26, 46, 0.08);
  border-radius: var(--r-sm);
  background: var(--bg-input);
  color: var(--text-primary);
  font-family: 'Inter', sans-serif;
  font-size: 0.85rem;
  font-weight: 500;
  outline: none;
  transition: all var(--dur) var(--ease);
  width: 100%;
}

#city_select,
#select_country {
  cursor: pointer;
  position: relative;
  z-index: 2;
}

#city_input {
  appearance: none;
  -webkit-appearance: none;
}

#city_input::placeholder {
  color: var(--text-tertiary);
  font-weight: 400;
}

#city_select:focus,
#city_input:focus,
#select_country:focus {
  border-color: var(--accent);
  background: var(--bg-input-focus);
  box-shadow: 0 0 0 3px var(--accent-light);
}

#city_select option,
#select_country option {
  background: var(--bg-card);
  color: var(--text-primary);
}

#form_submit {
  padding: 0.8rem 1.5rem;
  border: none;
  border-radius: var(--r-sm);
  background: var(--accent);
  color: var(--text-inverse);
  font-family: 'Inter', sans-serif;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--dur) var(--ease);
  margin-top: 0.25rem;
}

#form_submit:hover {
  background: var(--accent-hover);
  box-shadow: var(--accent-glow);
  transform: translateY(-1px);
}

#form_submit:active {
  transform: translateY(0) scale(0.98);
}

.search_div .or-divider {
  text-align: center;
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--text-tertiary);
  position: relative;
  margin: 0.2rem 0;
}

.search_div .or-divider::before,
.search_div .or-divider::after {
  content: '';
  position: absolute;
  top: 50%;
  width: calc(50% - 1rem);
  height: 1px;
  background: rgba(26, 26, 46, 0.06);
}

.search_div .or-divider::before { left: 0; }
.search_div .or-divider::after { right: 0; }

#past_searches {
  margin-top: 1.25rem;
  padding-top: 1rem;
  border-top: 1px solid rgba(26, 26, 46, 0.05);
}

.section-label {
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-tertiary);
  margin-bottom: 0.6rem;
}

#city_names {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.past_city {
  padding: 0.6rem 0.85rem;
  border-radius: var(--r-sm);
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--dur) var(--ease);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.past_city::before {
  content: '→';
  font-size: 0.75rem;
  color: var(--text-tertiary);
  pointer-events: none;
  transition: all var(--dur) var(--ease);
}

.past_city:hover {
  background: var(--accent-light);
  color: var(--accent);
}

.past_city:hover::before {
  color: var(--accent);
  transform: translateX(3px);
}

.results_div {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.results_div > .placeholder-msg {
  text-align: center;
  padding: 4rem 2rem;
  background: var(--bg-card);
  border: 1.5px solid rgba(26, 26, 46, 0.05);
  border-radius: var(--r-xl);
  box-shadow: var(--shadow-sm);
}

.placeholder-msg .placeholder-icon {
  font-size: 2.5rem;
  margin-bottom: 1rem;
  display: block;
}

.placeholder-msg p {
  font-size: 0.9rem;
  color: var(--text-tertiary);
  font-weight: 400;
}

#city_details {
  background: var(--bg-card);
  border: 1.5px solid rgba(26, 26, 46, 0.05);
  border-radius: var(--r-xl);
  padding: 2.5rem;
  box-shadow: var(--shadow-lg);
  animation: slideUp var(--dur-slow) var(--ease) forwards;
}

.weather-hero {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 2rem;
}

.weather-hero-left { flex: 1; }

#city_name {
  font-size: 1.6rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--text-primary);
  margin-bottom: 0.15rem;
  line-height: 1.2;
}

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

.city_temp {
  display: flex;
  align-items: baseline;
  gap: 0.25rem;
  margin-top: 0.75rem;
}

.temp {
  font-size: 5rem;
  font-weight: 300;
  letter-spacing: -0.04em;
  line-height: 1;
  color: var(--text-primary);
}

.temp-unit {
  font-size: 1.5rem;
  font-weight: 500;
  color: var(--text-tertiary);
}

.weather_param { display: none; }

.current_icon { flex-shrink: 0; }

.current_icon img {
  width: 100px;
  height: 100px;
  filter: drop-shadow(0 4px 12px rgba(0,0,0,0.08));
  animation: float 5s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-8px); }
}

.weather-details-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
}

.weather-detail-item {
  background: var(--bg-card-alt);
  border-radius: var(--r-md);
  padding: 1rem;
  text-align: center;
  transition: all var(--dur) var(--ease);
}

.weather-detail-item:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.detail-icon {
  font-size: 1.1rem;
  margin-bottom: 0.35rem;
}

.detail-label {
  display: block;
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-tertiary);
  margin-bottom: 0.2rem;
}

.detail-value {
  display: block;
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
}

#five_day_weather h2 {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-tertiary);
  margin-bottom: 0.75rem;
}

.forecast-cards-row {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0.6rem;
}

.forecast-card {
  background: var(--bg-card);
  border: 1.5px solid rgba(26, 26, 46, 0.05);
  border-radius: var(--r-lg);
  padding: 1.25rem 0.75rem;
  text-align: center;
  box-shadow: var(--shadow-sm);
  cursor: default;
  transition: all var(--dur) var(--ease);
  animation: slideUp var(--dur-slow) var(--ease) forwards;
  opacity: 0;
  animation-delay: calc(80ms * var(--i, 0));
}

.forecast-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.forecast-card h4 {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text-tertiary);
  margin-bottom: 0.5rem;
}

.forecast-card img {
  width: 44px;
  height: 44px;
  margin: 0.2rem auto;
  display: block;
}

.forecast-card p:first-of-type {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0.35rem 0;
}

.forecast-card p {
  font-size: 0.72rem;
  color: var(--text-tertiary);
  margin: 0.15rem 0;
  font-weight: 500;
}

#loading {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(245, 240, 235, 0.85);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  z-index: 9999;
  align-items: center;
  justify-content: center;
}

.loading-content {
  text-align: center;
  animation: slideUp 0.4s var(--ease) forwards;
}

.loading-spinner {
  width: 36px;
  height: 36px;
  border: 3px solid rgba(26, 26, 46, 0.08);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin: 0 auto 1rem;
}

#loading p {
  color: var(--text-secondary);
  font-size: 0.85rem;
  font-weight: 500;
}

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

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

@media (max-width: 900px) {
  main.grid-x {
    grid-template-columns: 1fr;
    padding: 1.25rem 1rem 2rem;
  }
  header.primary { padding: 1.5rem 1rem 0; }
  .search_div { position: static; order: 2; }
  .forecast-cards-row { grid-template-columns: repeat(3, 1fr); }
  .weather-hero { flex-wrap: wrap; gap: 1rem; }
}

@media (max-width: 600px) {
  .temp { font-size: 3.5rem; }
  .forecast-cards-row { grid-template-columns: repeat(2, 1fr); }
  .weather-details-row { grid-template-columns: 1fr 1fr; }
  .header-subtitle { display: none; }
  #city_details { padding: 1.5rem; }
}

::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(26, 26, 46, 0.12); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: rgba(26, 26, 46, 0.2); }

::selection { background: var(--accent-light); color: var(--accent); }