/* =========================================================
   RESET.CSS — Normalize + CSS Custom Properties
   Radar Hipoteca | radarhipoteca.es
   ========================================================= */

/* --- Custom Properties (Design Tokens) --- */
:root {
  /* Colors */
  --color-bg: #f7f8fa;
  --color-surface: #ffffff;
  --color-text: #1f2937;
  --color-text-secondary: #5b6472;
  --color-blue: #1d4ed8;
  --color-blue-hover: #2563eb;
  --color-green: #059669;
  --color-green-light: #ecfdf5;
  --color-border: #e5e7eb;
  --color-warning: #d97706;
  --color-warning-light: #fffbeb;
  --color-danger: #dc2626;
  --color-danger-light: #fef2f2;

  /* Typography */
  --font-heading: 'Inter', system-ui, -apple-system, sans-serif;
  --font-body: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-size-base: 16px;
  --line-height-base: 1.6;
  --line-height-heading: 1.3;

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;

  /* Borders */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);

  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;

  /* Layout */
  --container-max: 1200px;
  --container-content: 800px;
  --header-height: 64px;
}

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

/* --- Base --- */
html {
  font-size: var(--font-size-base);
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: var(--line-height-base);
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

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

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

a:hover {
  color: var(--color-blue-hover);
}

a:focus-visible {
  outline: 2px solid var(--color-blue);
  outline-offset: 2px;
  border-radius: 2px;
}

/* --- Lists --- */
ul, ol {
  list-style: none;
}

/* --- Media --- */
img, video, svg {
  display: block;
  max-width: 100%;
}

/* --- Form Elements --- */
input, textarea, select, button {
  font-family: inherit;
  font-size: inherit;
  line-height: inherit;
}

button {
  cursor: pointer;
  border: none;
  background: none;
}

/* --- Table --- */
table {
  border-collapse: collapse;
  width: 100%;
}

/* --- Misc --- */
hr {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: var(--space-xl) 0;
}

strong {
  font-weight: 600;
}

em {
  font-style: italic;
}

/* --- Utility Classes --- */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.text-center { text-align: center; }
.text-secondary { color: var(--color-text-secondary); }
.text-green { color: var(--color-green); }
.text-blue { color: var(--color-blue); }

/* --- Scroll Animations --- */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.fade-in.is-visible {
  opacity: 1;
  transform: translateY(0);
}