/* Weatherbox Stylesheet - Minimalist Dark Aesthetic */

@font-face {
  font-family: 'u_DIN';
  src: url('/assets/fonts/uDIN1451Mittelschrift.ttf?v=2') format('truetype');
  font-weight: normal;
  font-style: normal;
  font-display: block;
}

:root {
  --bg-color: #222222;
  --text-color: #dbdbdb;
  --text-muted: #999999;
  --text-dim: #666666;
  --border-color: #333333;
  --card-bg: #1a1a1a;
  --card-hover: #262626;
  --box-bg: #161616;
  --accent-color: #e07a5f;
  --thermal-cold: #3a86ff;
  --thermal-mild: #8338ec;
  --thermal-warm: #ff006e;
  --thermal-hot: #fb5607;
  --thermal-extreme: #ffbe0b;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  --font-family: 'u_DIN', sans-serif;
  --transition-fast: 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-smooth: 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  text-transform: lowercase !important;
  font-family: 'u_DIN', sans-serif !important;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  background-color: var(--bg-color);
  color: var(--text-color);
}

body {
  font-family: var(--font-family);
  background-color: var(--bg-color);
  color: var(--text-color);
  line-height: 1.5;
  letter-spacing: 0.03em;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-family);
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: lowercase;
  color: #ffffff;
}

h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  line-height: 1.1;
  margin-bottom: 0.5rem;
}

h2 {
  font-size: clamp(1.4rem, 3vw, 2rem);
  margin-bottom: 1.25rem;
  position: relative;
  display: inline-block;
}

h2::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 0;
  width: 32px;
  height: 2px;
  background-color: var(--text-muted);
}

h3 {
  font-size: 1.2rem;
  margin-bottom: 0.5rem;
  color: var(--text-color);
}

p {
  font-size: 1.05rem;
  color: var(--text-color);
  margin-bottom: 1rem;
  font-weight: 300;
}

p.lead {
  font-size: 1.25rem;
  color: #eeeeee;
  line-height: 1.6;
}

a {
  color: var(--text-color);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: #ffffff;
}

/* Header & Nav */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(34, 34, 34, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  padding: 1.2rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.brand-logo-img {
  height: 28px;
  width: auto;
  filter: brightness(0) invert(0.92);
}

.brand-name {
  font-family: var(--font-family);
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: #ffffff;
  text-transform: lowercase;
}

.nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
}

.nav-links a {
  font-size: 0.95rem;
  letter-spacing: 0.08em;
  text-transform: lowercase;
  color: var(--text-muted);
}

.nav-links a:hover {
  color: #ffffff;
}

/* Layout container */
.container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 1.5rem;
  width: 100%;
}

/* Section Common */
.section {
  padding: 5rem 0;
  border-bottom: 1px solid var(--border-color);
}

.section-label {
  font-size: 0.85rem;
  letter-spacing: 0.2em;
  text-transform: lowercase;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}

/* Hero Section */
.hero-section {
  padding: 6rem 0 4rem 0;
  text-align: center;
}

.hero-logo-wrapper {
  margin-bottom: 2rem;
  display: inline-block;
}

.hero-logo-img {
  max-width: 420px;
  width: 85vw;
  height: auto;
  filter: brightness(0) invert(0.92);
}

.hero-tagline {
  max-width: 840px;
  margin: 1.5rem auto 2.5rem auto;
  font-size: 1.35rem;
  color: #ececec;
  line-height: 1.6;
  letter-spacing: 0.04em;
}

.badge {
  display: inline-block;
  padding: 0.35rem 1rem;
  border: 1px solid var(--border-color);
  background-color: var(--card-bg);
  border-radius: 100px;
  font-size: 0.8rem;
  letter-spacing: 0.15em;
  text-transform: lowercase;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}

/* Weatherbox Center Dynamic Demo Box */
.demo-section {
  padding: 4rem 0;
  background-color: #1a1a1a;
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.demo-title {
  text-align: center;
  margin-bottom: 0.5rem;
}

.demo-subtitle {
  text-align: center;
  color: var(--text-muted);
  margin-bottom: 2.5rem;
  font-size: 1.05rem;
}

/* The Core Weatherbox Component Mock */
.weatherbox-stage {
  position: relative;
  width: 100%;
  max-width: 720px;
  margin: 0 auto;
  aspect-ratio: 1 / 1;
  max-height: 580px;
  background-color: var(--box-bg);
  border: 1px solid #3d3d3d;
  border-radius: var(--radius-lg);
  box-shadow: 0 20px 50px rgba(0,0,0,0.6), inset 0 0 1px rgba(255,255,255,0.1);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 2rem;
  overflow: hidden;
  user-select: none;
  transition: border-color var(--transition-smooth);
}

.weatherbox-stage:hover {
  border-color: #555555;
}

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

.wb-location {
  font-size: 1.4rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  color: #ffffff;
}

.wb-metric-toggle {
  display: flex;
  background-color: #262626;
  border-radius: 6px;
  padding: 2px;
  gap: 2px;
}

.wb-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  font-family: var(--font-family);
  font-size: 0.8rem;
  padding: 0.35rem 0.8rem;
  border-radius: 4px;
  cursor: pointer;
  letter-spacing: 0.05em;
  transition: all var(--transition-fast);
}

.wb-btn.active {
  background-color: #383838;
  color: #ffffff;
}

/* Central Thermal Core Display */
.wb-thermal-core {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: relative;
  padding: 1.5rem;
  background-color: rgba(30, 30, 30, 0.7);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-md);
}

.wb-thermal-main {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
}

.wb-temp-value {
  font-size: clamp(3.5rem, 8vw, 5.5rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: #ffffff;
  transition: color var(--transition-fast);
}

.wb-temp-unit {
  font-size: 1.8rem;
  color: var(--text-muted);
}

.wb-thermal-label {
  margin-top: 0.5rem;
  font-size: 0.95rem;
  letter-spacing: 0.15em;
  text-transform: lowercase;
  color: #cccccc;
}

.wb-air-temp-comparison {
  margin-top: 0.25rem;
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* Thermal Force Breakdown Bars inside Box */
.wb-force-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  width: 100%;
}

.wb-force-card {
  background-color: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 0.75rem 1rem;
  transition: background-color var(--transition-fast);
}

.wb-force-card:hover {
  background-color: rgba(255, 255, 255, 0.06);
}

.wb-force-name {
  display: flex;
  justify-content: space-between;
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: lowercase;
  color: var(--text-muted);
  margin-bottom: 0.4rem;
}

.wb-force-bar-track {
  width: 100%;
  height: 6px;
  background-color: #2a2a2a;
  border-radius: 3px;
  overflow: hidden;
}

.wb-force-bar-fill {
  height: 100%;
  border-radius: 3px;
  transition: width 0.5s ease-out, background-color 0.3s ease;
}

/* Thermal Colors with Absolute Implications */
.bg-thermal-sun { background-color: #ff595e; }
.bg-thermal-humidity { background-color: #ffca3a; }
.bg-thermal-wind { background-color: #1982c4; }
.bg-thermal-rad { background-color: #6a4c93; }

/* Interactive slider control panel under stage */
.demo-controls {
  max-width: 720px;
  margin: 2rem auto 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.25rem;
  background-color: var(--box-bg);
  border: 1px solid var(--border-color);
  padding: 1.5rem;
  border-radius: var(--radius-md);
}

.control-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.control-group label {
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  text-transform: lowercase;
  color: var(--text-muted);
  display: flex;
  justify-content: space-between;
}

.control-group input[type="range"] {
  accent-color: #ffffff;
  background: #333333;
  height: 4px;
  border-radius: 2px;
  cursor: pointer;
}

/* Overview Section */
.overview-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2.5rem;
  margin-top: 2rem;
}

.overview-card {
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 2rem;
  transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.overview-card:hover {
  transform: translateY(-2px);
  border-color: #444444;
}

.overview-card h3 {
  font-size: 1.3rem;
  margin-bottom: 1rem;
  color: #ffffff;
}

/* Features Grid */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.feature-item {
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: border-color var(--transition-fast);
}

.feature-item:hover {
  border-color: #555555;
}

.feature-num {
  font-size: 0.8rem;
  letter-spacing: 0.2em;
  color: var(--text-dim);
  margin-bottom: 1rem;
}

.feature-title {
  font-size: 1.25rem;
  color: #ffffff;
  margin-bottom: 0.8rem;
}

.feature-desc {
  font-size: 1rem;
  color: var(--text-color);
  line-height: 1.6;
}

/* Color & Shading Concept Banner */
.concept-banner {
  margin-top: 4rem;
  background: linear-gradient(135deg, #1c1c1c 0%, #292929 100%);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 3rem 2.5rem;
}

.shading-scale-preview {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 6px;
  height: 48px;
  margin: 1.5rem 0;
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.shading-cell {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  font-weight: 500;
  color: #ffffff;
}

/* Footer */
.site-footer {
  padding: 3rem 0;
  background-color: #191919;
  border-top: 1px solid var(--border-color);
  margin-top: auto;
  text-align: center;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.footer-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
}

.footer-logo {
  height: 24px;
  width: auto;
  filter: brightness(0) invert(0.8);
}

.footer-links {
  display: flex;
  gap: 1.5rem;
  list-style: none;
  font-size: 0.85rem;
  letter-spacing: 0.1em;
  text-transform: lowercase;
}

/* Responsive adjustments */
@media (max-width: 768px) {
  .site-header {
    padding: 1rem 1.25rem;
  }
  .nav-links {
    gap: 1rem;
  }
  .hero-section {
    padding: 4rem 0 2rem 0;
  }
  .weatherbox-stage {
    padding: 1.25rem;
    height: auto;
    aspect-ratio: auto;
  }
  .wb-force-grid {
    grid-template-columns: 1fr;
  }
  .demo-controls {
    grid-template-columns: 1fr;
  }
}