/* ==========================================================================
   Weather Experience Design System
   Refined Apple-platform aesthetic with light & dark mode support
   ========================================================================== */

/* Design Tokens & CSS Custom Properties */
:root {
  /* Font Family Stacks */
  --font-sans: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --font-mono: SFMono-Regular, Menlo, Monaco, Consolas, monospace;

  /* Color Palette - Light Appearance (Default) */
  --color-bg-base: #f5f7fa;
  --color-bg-surface: rgba(255, 255, 255, 0.72);
  --color-bg-surface-hover: rgba(255, 255, 255, 0.85);
  --color-bg-card: rgba(255, 255, 255, 0.65);
  --color-bg-card-border: rgba(0, 0, 0, 0.08);
  --color-bg-header: rgba(245, 247, 250, 0.8);
  
  --color-text-primary: #1d1d1f;
  --color-text-secondary: #515154;
  --color-text-muted: #86868b;

  --color-accent: #0066cc;
  --color-accent-subtle: rgba(0, 102, 204, 0.1);
  --color-accent-hover: #0052a3;

  --color-focus-ring: #0066cc;

  /* Ambient Atmospheric Gradients */
  --aura-gradient-1: radial-gradient(circle at 20% 20%, rgba(56, 189, 248, 0.15), transparent 50%);
  --aura-gradient-2: radial-gradient(circle at 80% 60%, rgba(99, 102, 241, 0.12), transparent 50%);
  --aura-gradient-3: radial-gradient(circle at 50% 90%, rgba(251, 146, 60, 0.1), transparent 50%);

  /* Elevation & Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.08);
  --shadow-inner: inset 0 1px 1px rgba(255, 255, 255, 0.8);

  /* Glassmorphism Filters */
  --glass-blur: blur(20px) saturate(180%);

  /* Spacing Tokens */
  --space-2xs: 0.25rem;  /* 4px */
  --space-xs: 0.5rem;    /* 8px */
  --space-sm: 0.75rem;   /* 12px */
  --space-md: 1rem;      /* 16px */
  --space-lg: 1.5rem;    /* 24px */
  --space-xl: 2rem;      /* 32px */
  --space-2xl: 3rem;     /* 48px */
  --space-3xl: 4.5rem;   /* 72px */
  --space-4xl: 6rem;     /* 96px */

  /* Border Radii */
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 0.15s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-normal: 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-slow: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

/* System Dark Color Scheme Overrides */
@media (prefers-color-scheme: dark) {
  :root {
    --color-bg-base: #0b0e14;
    --color-bg-surface: rgba(22, 27, 38, 0.75);
    --color-bg-surface-hover: rgba(30, 36, 50, 0.85);
    --color-bg-card: rgba(18, 23, 33, 0.65);
    --color-bg-card-border: rgba(255, 255, 255, 0.08);
    --color-bg-header: rgba(11, 14, 20, 0.82);

    --color-text-primary: #f5f5f7;
    --color-text-secondary: #a1a1a6;
    --color-text-muted: #6e6e73;

    --color-accent: #2997ff;
    --color-accent-subtle: rgba(41, 151, 255, 0.15);
    --color-accent-hover: #52a9ff;

    --color-focus-ring: #2997ff;

    --aura-gradient-1: radial-gradient(circle at 20% 20%, rgba(56, 189, 248, 0.12), transparent 50%);
    --aura-gradient-2: radial-gradient(circle at 80% 60%, rgba(99, 102, 241, 0.14), transparent 50%);
    --aura-gradient-3: radial-gradient(circle at 50% 90%, rgba(251, 146, 60, 0.08), transparent 50%);

    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.5);
    --shadow-inner: inset 0 1px 1px rgba(255, 255, 255, 0.1);
  }
}

/* Optional explicit Theme Attribute Overrides */
[data-theme="light"] {
  --color-bg-base: #f5f7fa;
  --color-bg-surface: rgba(255, 255, 255, 0.72);
  --color-bg-card: rgba(255, 255, 255, 0.65);
  --color-bg-card-border: rgba(0, 0, 0, 0.08);
  --color-bg-header: rgba(245, 247, 250, 0.8);
  --color-text-primary: #1d1d1f;
  --color-text-secondary: #515154;
  --color-text-muted: #86868b;
  --color-accent: #0066cc;
  --color-focus-ring: #0066cc;
}

[data-theme="dark"] {
  --color-bg-base: #0b0e14;
  --color-bg-surface: rgba(22, 27, 38, 0.75);
  --color-bg-card: rgba(18, 23, 33, 0.65);
  --color-bg-card-border: rgba(255, 255, 255, 0.08);
  --color-bg-header: rgba(11, 14, 20, 0.82);
  --color-text-primary: #f5f5f7;
  --color-text-secondary: #a1a1a6;
  --color-text-muted: #6e6e73;
  --color-accent: #2997ff;
  --color-focus-ring: #2997ff;
}

/* CSS Reset & Base Styles */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.5;
  color: var(--color-text-primary);
  background-color: var(--color-bg-base);
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

/* Ambient Background Atmosphere */
.ambient-bg {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  opacity: 0.9;
  background-image: var(--aura-gradient-1), var(--aura-gradient-2), var(--aura-gradient-3);
  transition: opacity var(--transition-slow);
}

/* Accessibility Focus Ring */
:focus-visible {
  outline: 2px solid var(--color-focus-ring);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

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

a:hover {
  text-decoration: underline;
}

/* Container Utility */
.container {
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--color-bg-header);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid var(--color-bg-card-border);
  transition: background-color var(--transition-normal), border-color var(--transition-normal);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.brand-link {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  color: var(--color-text-primary);
  font-weight: 600;
  font-size: 1.125rem;
  letter-spacing: -0.01em;
  text-decoration: none;
}

.brand-link:hover {
  text-decoration: none;
  opacity: 0.9;
}

.brand-icon {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, #38bdf8, #6366f1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.15);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
  list-style: none;
}

.nav-link {
  color: var(--color-text-secondary);
  font-size: 0.9375rem;
  font-weight: 500;
  transition: color var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
  color: var(--color-text-primary);
  text-decoration: none;
}

/* Restrained Text Badge CTA */
.nav-badge-cta {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: 6px 14px;
  background-color: var(--color-accent-subtle);
  color: var(--color-accent);
  border: 1px solid var(--color-accent-subtle);
  border-radius: var(--radius-full);
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: -0.01em;
  white-space: nowrap;
}

.nav-badge-cta .status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--color-accent);
}

/* Mobile Toggle */
.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--color-text-primary);
  padding: var(--space-xs);
  cursor: pointer;
  border-radius: var(--radius-sm);
}

/* ==========================================================================
   Hero Section & Portrait iPhone Screenshot Placeholder
   ========================================================================== */
.hero-section {
  position: relative;
  z-index: 1;
  padding: var(--space-3xl) 0 var(--space-2xl);
  text-align: center;
}

.hero-pill {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-2xs) var(--space-md);
  margin-bottom: var(--space-lg);
  background-color: var(--color-bg-surface);
  border: 1px solid var(--color-bg-card-border);
  border-radius: var(--radius-full);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  box-shadow: var(--shadow-sm);
}

.hero-title {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.03em;
  color: var(--color-text-primary);
  max-width: 800px;
  margin: 0 auto var(--space-lg);
}

.hero-subtitle {
  font-size: clamp(1.125rem, 2vw, 1.375rem);
  font-weight: 400;
  line-height: 1.45;
  color: var(--color-text-secondary);
  max-width: 640px;
  margin: 0 auto var(--space-xl);
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-md);
  margin-bottom: var(--space-3xl);
  flex-wrap: wrap;
}

/* Restrained Availability Badge */
.availability-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-xl);
  background-color: var(--color-bg-surface);
  border: 1px solid var(--color-bg-card-border);
  border-radius: var(--radius-full);
  color: var(--color-text-primary);
  font-size: 0.9375rem;
  font-weight: 500;
  box-shadow: var(--shadow-md);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
}

.availability-badge svg {
  color: var(--color-accent);
}

/* Portrait iPhone Screenshot Placeholder Container */
.screenshot-container {
  position: relative;
  width: 100%;
  max-width: 320px;
  margin: 0 auto;
  padding: var(--space-sm);
  background: var(--color-bg-surface);
  border: 1px solid var(--color-bg-card-border);
  border-radius: 46px;
  box-shadow: var(--shadow-lg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
}

.screenshot-placeholder-frame {
  position: relative;
  width: 100%;
  aspect-ratio: 9 / 19.5; /* Official iPhone portrait ratio */
  border-radius: 38px;
  background: linear-gradient(180deg, rgba(56, 189, 248, 0.08) 0%, rgba(99, 102, 241, 0.08) 100%);
  border: 1.5px dashed var(--color-bg-card-border);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  overflow: hidden;
  padding: var(--space-lg) var(--space-md);
}

.iphone-notch {
  width: 90px;
  height: 20px;
  background-color: var(--color-bg-base);
  border-radius: var(--radius-full);
  border: 1px solid var(--color-bg-card-border);
  margin-bottom: var(--space-sm);
  opacity: 0.6;
}

.abstract-weather-art {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
  opacity: 0.85;
}

.placeholder-tag-label {
  position: relative;
  z-index: 2;
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-xs) var(--space-md);
  background-color: var(--color-bg-surface);
  border: 1px solid var(--color-bg-card-border);
  border-radius: var(--radius-md);
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  box-shadow: var(--shadow-sm);
  text-align: center;
  margin-top: auto;
}

/* ==========================================================================
   Features Bento Grid Section & Card iPhone Frames
   ========================================================================== */
.features-section {
  position: relative;
  z-index: 1;
  padding: var(--space-3xl) 0;
}

.section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto var(--space-3xl);
}

.section-tagline {
  font-size: 0.875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-accent);
  margin-bottom: var(--space-xs);
}

.section-title {
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-text-primary);
  margin-bottom: var(--space-sm);
}

.section-description {
  font-size: 1.0625rem;
  color: var(--color-text-secondary);
  line-height: 1.5;
}

.bento-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: var(--space-lg);
}

.bento-card {
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-bg-card-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  box-shadow: var(--shadow-sm);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);
}

.bento-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: rgba(0, 102, 204, 0.2);
}

.bento-span-7 { grid-column: span 7; }
.bento-span-5 { grid-column: span 5; }
.bento-span-4 { grid-column: span 4; }
.bento-span-6 { grid-column: span 6; }
.bento-span-12 { grid-column: span 12; }

.card-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background-color: var(--color-accent-subtle);
  color: var(--color-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-lg);
}

.card-title {
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--color-text-primary);
  margin-bottom: var(--space-xs);
}

.card-text {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  line-height: 1.5;
  margin-bottom: var(--space-lg);
}

/* Portrait iPhone Frame inside Bento Cards (Fits real portrait screenshots) */
.card-iphone-container {
  width: 100%;
  display: flex;
  justify-content: center;
  padding: var(--space-md) 0 var(--space-xs);
}

.card-iphone-frame {
  position: relative;
  width: 100%;
  max-width: 220px;
  aspect-ratio: 9 / 19.5;
  border-radius: 30px;
  background: linear-gradient(180deg, rgba(56, 189, 248, 0.06), rgba(99, 102, 241, 0.06));
  border: 1.5px dashed var(--color-bg-card-border);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  overflow: hidden;
  padding: var(--space-md) var(--space-xs);
  box-shadow: var(--shadow-sm);
}

.card-iphone-frame .iphone-notch {
  width: 60px;
  height: 12px;
  margin-bottom: 0;
}

/* Metrics List inside Bento Card */
.metrics-pill-grid {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  margin-top: var(--space-sm);
}

.metric-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  background-color: var(--color-bg-surface);
  border: 1px solid var(--color-bg-card-border);
  border-radius: var(--radius-full);
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--color-text-primary);
}

.metric-pill svg {
  color: var(--color-accent);
}

/* ==========================================================================
   Restrained CTA Section
   ========================================================================== */
.cta-section {
  position: relative;
  z-index: 1;
  padding: var(--space-3xl) 0;
}

.cta-card {
  text-align: center;
  background: linear-gradient(135deg, var(--color-bg-surface), var(--color-bg-card));
  border: 1px solid var(--color-bg-card-border);
  border-radius: var(--radius-xl);
  padding: var(--space-3xl) var(--space-xl);
  box-shadow: var(--shadow-md);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  max-width: 880px;
  margin: 0 auto;
}

.cta-title {
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-text-primary);
  margin-bottom: var(--space-sm);
}

.cta-text {
  font-size: 1.0625rem;
  color: var(--color-text-secondary);
  max-width: 540px;
  margin: 0 auto var(--space-xl);
}

.cta-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-md);
  flex-wrap: wrap;
}

.secondary-button {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: 12px 24px;
  background-color: var(--color-bg-surface);
  border: 1px solid var(--color-bg-card-border);
  border-radius: var(--radius-full);
  color: var(--color-text-primary);
  font-size: 0.9375rem;
  font-weight: 500;
  transition: background-color var(--transition-fast), border-color var(--transition-fast);
}

.secondary-button:hover {
  background-color: var(--color-bg-surface-hover);
  text-decoration: none;
}

/* ==========================================================================
   Privacy & Support Pages
   ========================================================================== */
.page-header {
  padding: var(--space-3xl) 0 var(--space-xl);
  border-bottom: 1px solid var(--color-bg-card-border);
  margin-bottom: var(--space-2xl);
}

.page-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-text-primary);
  margin-bottom: var(--space-xs);
}

.page-subtitle {
  font-size: 1.125rem;
  color: var(--color-text-secondary);
}

.content-body {
  max-width: 760px;
  margin: 0 auto var(--space-4xl);
}

.legal-section {
  margin-bottom: var(--space-2xl);
}

.legal-section h2 {
  font-size: 1.375rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--color-text-primary);
  margin-bottom: var(--space-sm);
}

.legal-section p {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: var(--space-sm);
}

.legal-section ul {
  padding-left: var(--space-lg);
  margin-bottom: var(--space-sm);
}

.legal-section li {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: var(--space-2xs);
}

/* Owner Review Required Marker */
.owner-review-marker {
  display: inline-block;
  padding: var(--space-xs) var(--space-sm);
  margin: var(--space-xs) 0;
  background-color: rgba(234, 179, 8, 0.12);
  border: 1px solid rgba(234, 179, 8, 0.3);
  border-radius: var(--radius-sm);
  color: var(--color-text-primary);
  font-size: 0.8125rem;
  font-weight: 600;
  font-family: var(--font-mono);
}

/* FAQ Accordion */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.faq-item {
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-bg-card-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color var(--transition-fast);
}

.faq-trigger {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-lg);
  background: none;
  border: none;
  color: var(--color-text-primary);
  font-size: 1.0625rem;
  font-weight: 600;
  text-align: left;
  cursor: pointer;
  gap: var(--space-md);
}

.faq-trigger:hover {
  background-color: var(--color-bg-surface);
}

.faq-icon {
  width: 20px;
  height: 20px;
  transition: transform var(--transition-normal);
  color: var(--color-text-muted);
  flex-shrink: 0;
}

.faq-trigger[aria-expanded="true"] .faq-icon {
  transform: rotate(180deg);
  color: var(--color-accent);
}

.faq-panel {
  padding: 0 var(--space-lg) var(--space-lg);
  color: var(--color-text-secondary);
  font-size: 0.9375rem;
  line-height: 1.6;
}

.faq-panel[hidden] {
  display: none;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  position: relative;
  z-index: 1;
  margin-top: auto;
  background-color: var(--color-bg-header);
  border-top: 1px solid var(--color-bg-card-border);
  padding: var(--space-2xl) 0;
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.footer-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-lg);
}

.footer-links {
  display: flex;
  gap: var(--space-lg);
  list-style: none;
}

.footer-link {
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
}

.footer-link:hover {
  color: var(--color-text-primary);
}

/* Responsive Media Queries */
@media (max-width: 900px) {
  .bento-span-7,
  .bento-span-5,
  .bento-span-4,
  .bento-span-6 {
    grid-column: span 12;
  }
}

@media (max-width: 640px) {
  .nav-menu {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background-color: var(--color-bg-header);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-bottom: 1px solid var(--color-bg-card-border);
    padding: var(--space-lg);
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-md);
  }

  .nav-menu.is-active {
    display: flex;
  }

  .mobile-menu-toggle {
    display: block;
  }

  .hero-section {
    padding: var(--space-2xl) 0 var(--space-xl);
  }

  .footer-container {
    flex-direction: column;
    align-items: flex-start;
  }
}