/* Estilos generales */
:root {
  color-scheme: light;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  color: #222;
  background: #f5f8fc;
  --bg-primary: #f7f9fd;
  --bg-surface: rgba(255, 255, 255, 0.95);
  --bg-panel: #ffffff;
  --text-primary: #0f2a57;
  --text-secondary: #4f5e7f;
  --text-muted: #5f6d87;
  --accent: #4a90e2;
  --accent-soft: rgba(74,144,226,0.1);
  --border: rgba(90, 114, 149, 0.12);
  --shadow: 0 24px 90px rgba(30, 60, 110, 0.08);
  --button-bg: linear-gradient(135deg, #4a90e2 0%, #2f72c0 100%);
  --button-hover: linear-gradient(135deg, #3b7ace 0%, #286abc 100%);
  --notification-bg: rgba(74,144,226,0.1);
  --notification-border: rgba(74,144,226,0.18);
}

* {
  box-sizing: border-box;
}

html, body {
  min-height: 100%;
  margin: 0;
  padding: 0;
}

body {
  background: radial-gradient(circle at top left, rgba(74,144,226,0.18), transparent 25%),
              radial-gradient(circle at bottom right, rgba(72,187,120,0.14), transparent 20%),
              linear-gradient(180deg, #eef4fb 0%, #f7f9fd 100%);
}

.page-shell {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.hero {
  position: relative;
  overflow: hidden;
  padding: 60px 20px 40px;
  text-align: center;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 20% 20%, rgba(74,144,226,0.25), transparent 20%),
              radial-gradient(circle at 80% 10%, rgba(72,187,120,0.22), transparent 18%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 720px;
  margin: 0 auto;
  animation: fadeInUp 0.9s ease both;
}

.eyebrow {
  display: inline-block;
  margin-bottom: 22px;
  padding: 8px 18px;
  border-radius: 999px;
  background: rgba(74,144,226,0.14);
  color: #1c4f8a;
  font-size: 0.95rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero h1 {
  margin: 0 0 14px;
  font-size: clamp(2.4rem, 4vw, 4.2rem);
  line-height: 1.02;
  color: #0f2655;
}

.hero p {
  color: #4b5873;
  font-size: 1rem;
  line-height: 1.75;
  margin: 16px auto 0;
  max-width: 620px;
}

.container {
  width: min(96%, 980px);
  margin: -40px auto 40px;
  padding: 0 16px 32px;
  display: grid;
  gap: 24px;
}

.panel {
  position: relative;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.95);
  border: 1px solid rgba(90, 114, 149, 0.12);
  border-radius: 26px;
  box-shadow: 0 24px 90px rgba(30, 60, 110, 0.08);
  padding: 28px;
  backdrop-filter: blur(10px);
  animation: fadeInUp 0.9s ease both;
}

.panel-header h2 {
  margin: 0;
  font-size: 1.55rem;
  color: #102746;
}

.panel-header p {
  margin: 10px 0 0;
  color: #5f6d87;
  line-height: 1.7;
}

.form-group {
  margin-bottom: 18px;
}

label {
  display: block;
  margin-bottom: 10px;
  color: #1f385f;
  font-weight: 700;
}

input[type="text"] {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid rgba(74,144,226,0.16);
  border-radius: 18px;
  background: #fbfdff;
  color: #1f334f;
  font-size: 0.95rem;
  line-height: 1;
  transition: border-color 0.25s ease, box-shadow 0.25s ease, transform 0.25s ease;
}

input[type="text"]:focus {
  border-color: rgba(74,144,226,0.6);
  box-shadow: 0 0 0 8px rgba(74,144,226,0.08);
  outline: none;
  transform: translateY(-1px);
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
}

button {
  flex: 1 1 220px;
  min-width: 160px;
  padding: 12px 16px;
  border: none;
  border-radius: 14px;
  background: linear-gradient(135deg, #4a90e2 0%, #2f72c0 100%);
  color: #fff;
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  line-height: 1;
  cursor: pointer;
  transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.25s ease;
  box-shadow: 0 12px 24px rgba(74,144,226,0.18);
}

button:hover {
  transform: translateY(-2px);
  box-shadow: 0 18px 40px rgba(74,144,226,0.22);
  background: linear-gradient(135deg, #3b7ace 0%, #286abc 100%);
}

button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

#currentWeatherBtn {
  background: linear-gradient(135deg, #4a90e2 0%, #2f72c0 100%);
}

#forecastWeatherBtn {
  background: transparent;
  color: #2f72c0;
  border: 2px solid rgba(74,144,226,0.32);
}

#forecastWeatherBtn:hover {
  background: rgba(74,144,226,0.12);
  color: #1c4f8a;
}

.notification {
  display: block;
  padding: 14px 18px;
  border-radius: 16px;
  border: 1px solid rgba(74,144,226,0.18);
  background: rgba(74,144,226,0.1);
  color: #12315f;
  font-weight: 600;
  margin-top: 8px;
  min-height: 48px;
  line-height: 1.5;
}

.hidden {
  display: none;
}

.result-panel {
  display: grid;
  gap: 24px;
}

.result-card {
  background: #ffffff;
  border-radius: 24px;
  padding: 28px;
  border: 1px solid rgba(82, 95, 134, 0.12);
  box-shadow: 0 22px 70px rgba(36, 58, 100, 0.08);
  animation: fadeInUp 0.8s ease both;
}

.result-card h2 {
  margin-top: 0;
  color: #0f2a57;
  font-size: 1.6rem;
}

.result-card p {
  margin: 10px 0;
  color: #4f5e7f;
  line-height: 1.75;
}

.result-grid {
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  margin-top: 18px;
}

.weather-metric {
  padding: 18px;
  border-radius: 20px;
  background: #f8fbff;
  border: 1px solid rgba(74,144,226,0.12);
}

.weather-metric strong {
  display: block;
  color: #0f2a57;
  margin-bottom: 6px;
}

.result-card img {
  display: block;
  margin: 18px auto 0;
  width: 96px;
  height: 96px;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(18px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 900px) {
  .container {
    margin-top: -24px;
  }

  .hero {
    padding: 50px 18px 32px;
  }

  .hero-content {
    padding: 0 10px;
  }

  .hero h1 {
    font-size: clamp(2.1rem, 5vw, 3.3rem);
  }

  .panel {
    padding: 24px;
  }

  .actions {
    flex-direction: column;
    gap: 14px;
  }

  button {
    width: 100%;
    padding: 10px 16px;
    font-size: 0.92rem;
    font-weight: 600;
  }
}

@media (max-width: 640px) {
  .hero {
    padding: 42px 16px 26px;
    min-height: auto;
  }

  .hero::before {
    background: radial-gradient(circle at 20% 20%, rgba(74,144,226,0.16), transparent 18%),
                radial-gradient(circle at 80% 10%, rgba(72,187,120,0.14), transparent 18%);
  }

  .hero-content {
    padding: 0 6px;
  }

  .hero h1 {
    font-size: 1.95rem;
    line-height: 1.1;
  }

  .hero p {
    font-size: 0.95rem;
    max-width: 100%;
    margin-top: 14px;
  }

  .panel {
    padding: 20px;
    border-radius: 22px;
  }

  .panel-header h2 {
    font-size: 1.35rem;
  }

  .panel-header p {
    font-size: 0.95rem;
  }

  .form-group {
    margin-bottom: 16px;
  }

  input[type="text"] {
    padding: 12px 16px;
    font-size: 0.95rem;
  }

  .actions {
    gap: 12px;
  }

  button {
    width: 100%;
    padding: 10px 16px;
  }

  .notification {
    font-size: 0.95rem;
    min-height: auto;
    padding: 14px 16px;
  }

  .result-card {
    padding: 22px 18px;
    border-radius: 22px;
  }

  .result-card h2,
  .result-card h3 {
    font-size: 1.3rem;
  }

  .result-grid {
    grid-template-columns: 1fr;
  }

  .weather-metric {
    padding: 16px;
  }

  .result-card img {
    width: 76px;
    height: 76px;
  }
}

@media (max-width: 480px) {
  .container {
    margin-top: -16px;
    padding: 0 12px 24px;
  }

  .hero {
    padding: 36px 12px 22px;
  }

  .hero h1 {
    font-size: 1.8rem;
  }

  .hero p {
    font-size: 0.92rem;
    line-height: 1.7;
  }

  .panel {
    padding: 18px;
    border-radius: 20px;
  }

  .actions {
    gap: 10px;
  }

  button {
    width: 100%;
    padding: 9px 16px;
  }

  .result-card {
    padding: 18px;
  }

  .result-grid {
    gap: 14px;
  }
}

@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    color: #e6ecff;
    background: #070b17;
    --bg-primary: #0c1220;
    --bg-surface: rgba(11, 18, 35, 0.92);
    --bg-panel: rgba(15, 24, 46, 0.96);
    --text-primary: #f5f8ff;
    --text-secondary: #c1c9e2;
    --text-muted: #9aa5c4;
    --accent: #5aa7ff;
    --accent-soft: rgba(90, 167, 255, 0.16);
    --border: rgba(112, 132, 178, 0.24);
    --shadow: 0 26px 90px rgba(0, 0, 0, 0.42);
    --button-bg: linear-gradient(135deg, #528cff 0%, #3b6cd3 100%);
    --button-hover: linear-gradient(135deg, #496be0 0%, #304ebc 100%);
    --notification-bg: rgba(90, 144, 255, 0.12);
    --notification-border: rgba(90, 144, 255, 0.24);
  }

  body {
    background: radial-gradient(circle at top left, rgba(90,160,255,0.18), transparent 18%),
                radial-gradient(circle at bottom right, rgba(90,160,255,0.12), transparent 16%),
                linear-gradient(180deg, #070b17 0%, #081127 100%);
  }

  .hero {
    background: transparent;
  }

  .hero-content p,
  .eyebrow,
  .panel-header p,
  label,
  .result-card p,
  .weather-metric strong,
  .notification {
    color: var(--text-secondary);
  }

  .hero h1,
  .panel-header h2,
  .result-card h2,
  .result-card h3,
  .weather-metric strong {
    color: var(--text-primary);
  }

  .panel,
  .result-card {
    background: var(--bg-panel);
    border-color: var(--border);
    box-shadow: var(--shadow);
  }

  input[type="text"] {
    background: #0b162b;
    border-color: rgba(90, 144, 255, 0.22);
    color: #eef4ff;
  }

  input[type="text"]:focus {
    box-shadow: 0 0 0 8px rgba(90, 144, 255, 0.12);
  }

  button {
    box-shadow: 0 14px 40px rgba(27, 52, 105, 0.22);
  }

  #currentWeatherBtn {
    background: linear-gradient(135deg, #528cff 0%, #3b6cd3 100%);
    color: #fff;
    border: none;
  }

  #forecastWeatherBtn {
    background: rgba(90, 144, 255, 0.08);
    color: #a6c6ff;
    border: 2px solid rgba(90, 144, 255, 0.22);
  }

  #forecastWeatherBtn:hover {
    background: rgba(90, 144, 255, 0.18);
    color: #f0f6ff;
  }

  .notification {
    background: rgba(90, 144, 255, 0.12);
    border-color: rgba(90, 144, 255, 0.24);
    color: #d9e2ff;
  }

  .weather-metric {
    background: rgba(15, 24, 44, 0.95);
    border-color: rgba(90, 144, 255, 0.14);
  }
}