/* ===============================================
   SOS PERMESSO - MAIN STYLESHEET
   Color Palette: Taxi Yellow, Red, White, Black
   =============================================== */

:root {
  /* Primary Colors - BRIGHTER & MORE VIBRANT */
  --taxi-yellow: #FFD700;
  --taxi-yellow-light: #FFF176;
  --taxi-yellow-dark: #FFC107;
  --taxi-yellow-bright: #FFEB3B;

  /* Lighthouse Red - MORE VIBRANT */
  --lighthouse-red: #FF5252;
  --lighthouse-red-dark: #E02B2B;
  --lighthouse-red-bright: #FF6B6B;

  /* Neutrals */
  --black: #1A1A1A;
  --gray-dark: #2D2D2D;
  --gray-medium: #757575;
  --gray-light: #F5F5F5;
  --white: #FFFFFF;
  --off-white: #FAFAFA;

  /* Accent Colors - BRIGHT & COLORFUL PALETTE */
  --accent-blue: #42A5F5;
  --accent-blue-bright: #64B5F6;
  --accent-teal: #26A69A;
  --accent-teal-bright: #4DB6AC;
  --accent-orange: #FF9800;
  --accent-orange-bright: #FFB74D;
  --accent-purple: #AB47BC;
  --accent-purple-bright: #BA68C8;
  --accent-pink: #EC407A;
  --accent-pink-bright: #F06292;
  --accent-green: #66BB6A;
  --accent-green-bright: #81C784;

  /* Semantic Colors - BRIGHTER */
  --success: #66BB6A;
  --success-bright: #81C784;
  --warning: #FFA726;
  --warning-bright: #FFB74D;
  --error: #EF5350;
  --error-bright: #E57373;
  --info: #42A5F5;
  --info-bright: #64B5F6;

  /* Spacing System */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-xxl: 4rem;

  /* Typography */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-heading: 'Poppins', var(--font-primary);

  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 2rem;
  --font-size-4xl: 2.5rem;
  --font-size-5xl: 3rem;

  /* Border Radius */
  --radius-sm: 0.5rem;
  --radius-md: 1rem;
  --radius-lg: 1.5rem;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.12);
  --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.15);
  --shadow-xl: 0 12px 24px rgba(0, 0, 0, 0.18);

  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-base: 250ms ease-in-out;
  --transition-slow: 350ms ease-in-out;

  /* Z-index layers */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal: 1040;
  --z-tooltip: 1050;
}

/* ===============================================
   RESET & BASE STYLES
   =============================================== */

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-primary);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--black);
  background-color: var(--white);
  overflow-x: hidden;
}

/* ===============================================
   TYPOGRAPHY
   =============================================== */

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--spacing-md);
  color: var(--black);
}

h1 {
  font-size: var(--font-size-4xl);
}

h2 {
  font-size: var(--font-size-3xl);
}

h3 {
  font-size: var(--font-size-2xl);
}

h4 {
  font-size: var(--font-size-xl);
}

p {
  margin-bottom: var(--spacing-sm);
  line-height: 1.7;
}

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

a:hover {
  color: var(--taxi-yellow-dark);
}

strong {
  font-weight: 700;
}

/* ===============================================
   LAYOUT UTILITIES
   =============================================== */

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.container-fluid {
  width: 100%;
  padding: 0 var(--spacing-md);
}

.section {
  padding: var(--spacing-xxl) 0;
}

.section-sm {
  padding: var(--spacing-xl) 0;
}

.section-lg {
  padding: calc(var(--spacing-xxl) * 1.5) 0;
}

/* ===============================================
   GRID SYSTEM
   =============================================== */

.grid {
  display: grid;
  gap: var(--spacing-md);
}

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

.grid-4 {
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
}

/* ===============================================
   FLEX UTILITIES
   =============================================== */

.flex {
  display: flex;
}

.flex-center {
  display: flex;
  justify-content: center;
  align-items: center;
}

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

.flex-column {
  display: flex;
  flex-direction: column;
}

.flex-wrap {
  flex-wrap: wrap;
}

/* ===============================================
   SPACING UTILITIES
   =============================================== */

.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }

.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mb-xl { margin-bottom: var(--spacing-xl); }

.pt-sm { padding-top: var(--spacing-sm); }
.pt-md { padding-top: var(--spacing-md); }
.pt-lg { padding-top: var(--spacing-lg); }

.pb-sm { padding-bottom: var(--spacing-sm); }
.pb-md { padding-bottom: var(--spacing-md); }
.pb-lg { padding-bottom: var(--spacing-lg); }

/* ===============================================
   TEXT UTILITIES
   =============================================== */

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.text-sm { font-size: var(--font-size-sm); }
.text-lg { font-size: var(--font-size-lg); }
.text-xl { font-size: var(--font-size-xl); }

.font-bold { font-weight: 700; }
.font-semibold { font-weight: 600; }
.font-medium { font-weight: 500; }

/* ===============================================
   COLOR UTILITIES
   =============================================== */

.bg-yellow { background-color: var(--taxi-yellow); }
.bg-red { background-color: var(--lighthouse-red); }
.bg-white { background-color: var(--white); }
.bg-gray-light { background-color: var(--gray-light); }
.bg-off-white { background-color: var(--off-white); }

.text-yellow { color: var(--taxi-yellow); }
.text-red { color: var(--lighthouse-red); }
.text-black { color: var(--black); }
.text-gray { color: var(--gray-medium); }

/* ===============================================
   RESPONSIVE BREAKPOINTS
   =============================================== */

@media (max-width: 768px) {
  :root {
    --font-size-4xl: 2rem;
    --font-size-3xl: 1.75rem;
    --font-size-2xl: 1.5rem;
    --spacing-xxl: 3rem;
  }

  .container {
    padding: 0 var(--spacing-sm);
  }

  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  :root {
    --font-size-4xl: 1.75rem;
    --font-size-3xl: 1.5rem;
    --spacing-xxl: 2rem;
  }
}