/* ============================================
   SafetyTools — Main Styles
   Design tokens, reset, typography, base layout
   ============================================ */

/* --- Design Tokens --- */
:root {
  /* Colors — Modern blue safety palette */
  --color-primary: #2563EB;
  --color-primary-dark: #1D4ED8;
  --color-primary-light: #93C5FD;
  --color-secondary: #1E3A8A;
  --color-secondary-light: #1D4ED8;
  --color-accent: #EFF6FF;
  --color-white: #FFFFFF;
  --color-text: #0F172A;
  --color-text-secondary: #334155;
  --color-text-light: #94A3B8;
  --color-border: #BFDBFE;
  --color-success: #2D9E5C;
  --color-whatsapp: #25D366;

  /* Typography */
  --font-heading: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  --font-body: 'Inter', system-ui, -apple-system, sans-serif;

  /* Spacing (8px base) */
  --space-xs: 0.5rem;   /* 8px */
  --space-sm: 1rem;      /* 16px */
  --space-md: 1.5rem;    /* 24px */
  --space-lg: 2rem;      /* 32px */
  --space-xl: 3rem;      /* 48px */
  --space-2xl: 4rem;     /* 64px */
  --space-3xl: 5rem;     /* 80px */
  --space-4xl: 6rem;     /* 96px */

  /* Border Radius */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-full: 9999px;

  /* Shadows — blue-tinted */
  --shadow-sm: 0 1px 3px rgba(37, 99, 235, 0.08);
  --shadow-md: 0 6px 18px rgba(37, 99, 235, 0.14);
  --shadow-lg: 0 12px 32px rgba(30, 58, 138, 0.18);
  --shadow-xl: 0 20px 56px rgba(30, 58, 138, 0.18);

  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;

  /* Layout */
  --max-width: 1200px;
  --navbar-height: 80px;
}

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

/* Mobile touch optimizations */
* { -webkit-tap-highlight-color: transparent; }
button, a, [role="button"] { touch-action: manipulation; }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

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

ul, ol {
  list-style: none;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

input, textarea, select {
  font-family: inherit;
  font-size: inherit;
}

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-secondary);
}

h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
}

h2 {
  font-size: clamp(1.5rem, 3.5vw, 2.5rem);
}

h3 {
  font-size: clamp(1.2rem, 2.5vw, 1.75rem);
}

h4 {
  font-size: clamp(1rem, 2vw, 1.25rem);
}

p {
  margin-bottom: var(--space-sm);
}

p:last-child {
  margin-bottom: 0;
}

/* --- Layout Utilities --- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-sm);
}

@media (min-width: 768px) {
  .container {
    padding: 0 var(--space-lg);
  }
}

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

@media (min-width: 768px) {
  .section {
    padding: var(--space-3xl) 0;
  }
}

.section--alt {
  background-color: var(--color-accent);
}

.section--dark {
  background: linear-gradient(135deg, var(--color-secondary), var(--color-primary-dark));
  color: var(--color-white);
}

.section--dark h2,
.section--dark h3,
.section--dark h4 {
  color: var(--color-white);
}

.section__header {
  text-align: center;
  margin-bottom: var(--space-xl);
}

.section__header p {
  color: var(--color-text-secondary);
  font-size: 1.125rem;
  max-width: 600px;
  margin: var(--space-sm) auto 0;
}

/* --- Grid System --- */
.grid {
  display: grid;
  gap: var(--space-md);
}

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

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

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

@media (min-width: 768px) {
  .grid--2 {
    grid-template-columns: repeat(2, 1fr);
  }

  .grid--3 {
    grid-template-columns: repeat(2, 1fr);
  }

  .grid--4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .grid--3 {
    grid-template-columns: repeat(3, 1fr);
  }

  .grid--4 {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  padding: 0.875rem 2rem;
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  transition: all var(--transition-base);
  white-space: nowrap;
}

.btn--primary {
  background-color: var(--color-primary);
  color: var(--color-white);
}

.btn--primary:hover {
  background-color: var(--color-primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn--secondary {
  background-color: rgba(147, 197, 253, 0.16);
  color: var(--color-white);
  border: 2px solid rgba(147, 197, 253, 0.72);
  backdrop-filter: blur(8px);
}

.btn--secondary:hover {
  background-color: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-primary-dark);
  transform: translateY(-2px);
}

.btn--outline {
  background-color: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}

.btn--outline:hover {
  background-color: var(--color-primary);
  color: var(--color-white);
  transform: translateY(-2px);
}

.btn--whatsapp {
  background-color: var(--color-whatsapp);
  color: var(--color-white);
}

.btn--whatsapp:hover {
  background-color: #20BD5A;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn--sm {
  padding: 0.625rem 1.5rem;
  font-size: 0.875rem;
}

.btn--lg {
  padding: 1rem 2.5rem;
  font-size: 1.125rem;
}

/* --- Card Base --- */
.card {
  background: var(--color-white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: all var(--transition-base);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.card__image {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  background: linear-gradient(135deg, var(--color-primary-light), var(--color-primary));
}

.card__body {
  padding: var(--space-md);
}

.card__title {
  margin-bottom: var(--space-xs);
}

.card__text {
  color: var(--color-text-secondary);
  font-size: 0.9375rem;
  margin-bottom: var(--space-sm);
}

/* --- Breadcrumb --- */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: var(--space-sm);
}

.breadcrumb a {
  color: rgba(255, 255, 255, 0.7);
}

.breadcrumb a:hover {
  color: var(--color-white);
}

.breadcrumb__separator {
  font-size: 0.75rem;
}

/* --- Page Hero (inner pages) --- */
.page-hero {
  background: linear-gradient(135deg, var(--color-secondary), var(--color-primary));
  padding: calc(var(--navbar-height) + var(--space-xl)) 0 var(--space-xl);
  text-align: center;
  position: relative;
  overflow: hidden;
}

@media (min-width: 768px) {
  .page-hero {
    padding: calc(var(--navbar-height) + var(--space-3xl)) 0 var(--space-3xl);
  }
}

.page-hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background:
    radial-gradient(circle at 30% 50%, rgba(147, 197, 253, 0.22) 0%, transparent 55%),
    radial-gradient(circle at 80% 20%, rgba(37, 99, 235, 0.14) 0%, transparent 45%);
  pointer-events: none;
}

.page-hero h1 {
  color: var(--color-white);
  margin-bottom: var(--space-sm);
}

.page-hero p {
  color: rgba(255, 255, 255, 0.8);
  font-size: 1.125rem;
  max-width: 600px;
  margin: 0 auto;
}

/* --- Misc --- */
.text-center {
  text-align: center;
}

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

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}