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

/* === CSS Custom Properties (from theme.ts) === */
:root {
  /* Primary - Pink */
  --primary: #FF6B9D;
  --primary-50: #FFF0F5;
  --primary-100: #FFE0EB;
  --primary-200: #FFC1D7;
  --primary-300: #FFA2C3;
  --primary-400: #FF83AF;
  --primary-500: #FF6B9D;
  --primary-600: #E85588;
  --primary-700: #D14073;
  --primary-800: #BA2B5E;
  --primary-900: #A31649;

  /* Secondary - Cyan */
  --secondary: #67E8F9;
  --secondary-50: #F0FDFF;
  --secondary-100: #E0FAFF;
  --secondary-200: #BAF4FF;
  --secondary-300: #94EDFF;
  --secondary-400: #67E8F9;
  --secondary-500: #22D3EE;
  --secondary-600: #06B6D4;
  --secondary-700: #0891B2;
  --secondary-800: #0E7490;
  --secondary-900: #155E75;

  /* Accent */
  --accent-pink: #FF6B9D;
  --accent-cyan: #67E8F9;
  --accent-yellow: #FBBF24;
  --accent-green: #34D399;

  /* Score colors */
  --score-fire: #22C55E;
  --score-hot: #84CC16;
  --score-warm: #EAB308;
  --score-cool: #F97316;
  --score-cold: #EF4444;

  /* Gradient */
  --gradient: linear-gradient(90deg, #FF6B9D, #67E8F9);
  --gradient-135: linear-gradient(135deg, #FF6B9D, #67E8F9);

  /* Backgrounds */
  --bg-primary: #FFFFFF;
  --bg-secondary: #F5F5F7;
  --bg-card: #FFFFFF;

  /* Text */
  --text-primary: #1A1A1A;
  --text-secondary: #6B7280;
  --text-tertiary: #9CA3AF;

  /* Borders */
  --border-default: #E5E7EB;
  --border-focus: #FF6B9D;

  /* Radii */
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-pill: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.04);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.06);

  /* Font */
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --font-mono: SFMono-Regular, Menlo, Monaco, Consolas, 'Liberation Mono', 'Courier New', monospace;

  /* Spacing */
  --section-padding: 48px 20px;
  --container-max: 1120px;
  --nav-height: 64px;
}

@media (min-width: 640px) {
  :root {
    --section-padding: 64px 32px;
  }
}

@media (min-width: 1024px) {
  :root {
    --section-padding: 80px 40px;
  }
}

/* === Base === */
html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  color: var(--text-primary);
  background: var(--bg-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

ul, ol {
  list-style: none;
}

/* === Typography === */
h1, h2, h3, h4 {
  line-height: 1.2;
  font-weight: 700;
  color: var(--text-primary);
}

h1 {
  font-size: 32px;
}

h2 {
  font-size: 28px;
}

h3 {
  font-size: 20px;
}

@media (min-width: 640px) {
  h1 { font-size: 40px; }
  h2 { font-size: 32px; }
  h3 { font-size: 22px; }
}

@media (min-width: 1024px) {
  h1 { font-size: 48px; }
  h2 { font-size: 36px; }
  h3 { font-size: 24px; }
}

p {
  color: var(--text-secondary);
  font-size: 16px;
  line-height: 1.7;
}

/* === Container === */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 20px;
}

/* === Buttons === */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 16px;
  border: none;
  cursor: pointer;
  border-radius: var(--radius-pill);
  padding: 14px 32px;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  text-decoration: none;
}

.btn:hover {
  transform: scale(1.03);
}

.btn:active {
  transform: scale(0.98);
}

.btn-gradient {
  background: var(--gradient);
  color: #FFFFFF !important;
  box-shadow: var(--shadow-md);
}

.btn-gradient:hover {
  box-shadow: var(--shadow-xl);
}

.btn-outline {
  background: transparent;
  color: var(--text-primary);
  border: 1.5px solid var(--border-default);
}

.btn-outline:hover {
  border-color: var(--primary);
  color: var(--primary);
}

/* === Navbar === */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-default);
  height: var(--nav-height);
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 18px;
  color: var(--text-primary);
}

.nav-brand img {
  width: 32px;
  height: 32px;
  border-radius: 8px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
}

.nav-links a {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color 0.2s ease;
}

.nav-links a:hover {
  color: var(--text-primary);
}

.nav-links .btn {
  font-size: 14px;
  padding: 10px 20px;
}

@media (max-width: 480px) {
  .nav-links {
    gap: 12px;
  }

  .nav-links a:not(.btn) {
    display: none;
  }

  .nav-links .btn {
    font-size: 13px;
    padding: 8px 16px;
  }
}

/* === Footer === */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-default);
  padding: 48px 20px 32px;
}

.footer-inner {
  max-width: var(--container-max);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
}

@media (min-width: 640px) {
  .footer-inner {
    grid-template-columns: 2fr 1fr 1fr;
  }
}

.footer-brand p {
  font-size: 14px;
  margin-top: 12px;
  max-width: 280px;
}

.footer-col h4 {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 12px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-tertiary);
}

.footer-col a {
  display: block;
  font-size: 14px;
  color: var(--text-secondary);
  padding: 4px 0;
  transition: color 0.2s ease;
}

.footer-col a:hover {
  color: var(--primary);
}

.footer-bottom {
  max-width: var(--container-max);
  margin: 32px auto 0;
  padding-top: 24px;
  border-top: 1px solid var(--border-default);
  text-align: center;
}

.footer-bottom p {
  font-size: 13px;
  color: var(--text-tertiary);
}

/* === Gradient Text Utility === */
.gradient-text {
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* === Section utility === */
.section {
  padding: var(--section-padding);
}

.section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 48px;
}

.section-header p {
  margin-top: 12px;
  font-size: 17px;
}