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

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

body {
    font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: #1f1f1f;
    background-color: #f7f5f2;
    min-height: 100vh;
    overflow-x: hidden;
}

img, picture, video, canvas, svg {
    display: block;
    max-width: 100%;
    height: auto;
}

input, button, textarea, select {
    font: inherit;
}

p, h1, h2, h3, h4, h5, h6 {
    overflow-wrap: break-word;
}

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

ul, ol {
    list-style: none;
}

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

/* Variables CSS obligatorias */
:root {
    /* Colores */
    --color-bg-primary: #f7f5f2;
    --color-bg-secondary: #ffffff;
    --color-text-primary: #1f1f1f;
    --color-text-secondary: #666666;
    --color-accent: #111111;
    --color-accent-hover: #2f2f2f;
    --color-border: rgba(0, 0, 0, 0.08);

    /* Tipografía */
    --font-display: 'Playfair Display', Georgia, serif;
    --font-body: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

    /* Espaciado */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2rem;
    --space-xl: 3rem;
    --space-xxl: 5rem;

    /* Border radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;

    /* Sombras */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.1);
    --shadow-hover: 0 12px 28px rgba(0, 0, 0, 0.12);

    /* Transiciones */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 400ms ease;

    /* Contenedores */
    --container-max: 1200px;
    --container-padding: 1.5rem;
}

/* Utilidades de tipografía */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    font-weight: 600;
    line-height: 1.2;
    color: var(--color-text-primary);
}

h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
}

h2 {
    font-size: clamp(2rem, 4vw, 3rem);
}

h3 {
    font-size: clamp(1.5rem, 3vw, 1.875rem);
}

p {
    font-size: 1rem;
    color: var(--color-text-secondary);
}

/* Clases utilitarias */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.section-label {
    display: block;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-sm);
}

.section-title {
    margin-bottom: var(--space-md);
}

.section-desc {
    max-width: 600px;
    margin-bottom: var(--space-xl);
}

/* Clases de espaciado */
.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.mb-xl { margin-bottom: var(--space-xl); }

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

/* Ocultar elementos visualmente (accesibilidad) */
.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}