/* ===================================
   BASE STYLES
   Reset, Variables, Typography, Utilities
   =================================== */

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

html,
body {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

/* Bloqueo de scroll cuando el menú está abierto */
body.menu-open {
    overflow: hidden;
}

/* CSS Variables */
:root {
    /* Colors */
    --color-primary: #0891B2;
    --color-primary-dark: #0E7490;
    --color-primary-light: #06B6D4;
    --color-secondary: #1F2937;
    --color-accent: #10B981;

    --color-bg: #FFFFFF;
    --color-bg-alt: #F9FAFB;
    --color-bg-dark: #F3F4F6;

    --color-text: #1F2937;
    --color-text-light: #6B7280;
    --color-text-muted: #9CA3AF;

    --color-border: #E5E7EB;
    --color-border-light: #F3F4F6;

    --color-success: #10B981;
    --color-error: #EF4444;
    --color-warning: #F59E0B;

    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

    --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
    --text-sm: clamp(0.875rem, 0.8rem + 0.375vw, 1rem);
    --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
    --text-lg: clamp(1.125rem, 1.05rem + 0.375vw, 1.25rem);
    --text-xl: clamp(1.25rem, 1.15rem + 0.5vw, 1.5rem);
    --text-2xl: clamp(1.5rem, 1.35rem + 0.75vw, 1.875rem);
    --text-3xl: clamp(1.875rem, 1.65rem + 1.125vw, 2.25rem);
    --text-4xl: clamp(2.25rem, 1.95rem + 1.5vw, 3rem);
    --text-5xl: clamp(3rem, 2.5rem + 2.5vw, 3.75rem);

    --font-normal: 400;
    --font-medium: 500;
    --font-semibold: 600;
    --font-bold: 700;

    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2rem;
    --space-xl: 3rem;
    --space-2xl: 4rem;
    --space-3xl: 6rem;

    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-full: 9999px;

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

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

    /* Z-index */
    --z-sticky: 100;
    --z-header: 1000;
    --z-modal: 2000;
}

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: var(--font-bold);
    line-height: 1.2;
    color: var(--color-text);
    margin-bottom: var(--space-md);
}

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

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

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

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

h5 {
    font-size: var(--text-lg);
}

h6 {
    font-size: var(--text-base);
}

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

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

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

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

ul,
ol {
    list-style: none;
}

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

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
    padding: 0.75rem 1.5rem;
    font-size: var(--text-base);
    font-weight: var(--font-semibold);
    line-height: 1;
    text-align: center;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-base);
    white-space: nowrap;
    text-decoration: none;
}

.btn:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

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

.btn--primary:hover {
    background-color: var(--color-primary-dark);
    color: #FFFFFF;
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn--primary:active {
    transform: translateY(0);
}

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

.btn--secondary:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    background-color: rgba(8, 145, 178, 0.05);
}



.btn--large {
    padding: 1rem 2rem;
    font-size: var(--text-lg);
}

.btn--full {
    width: 100%;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none !important;
}

/* Badges */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.5rem 1rem;
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
    border-radius: var(--radius-full);
    white-space: nowrap;
}

.badge--primary {
    background-color: var(--color-primary);
    color: #FFFFFF;
}

.badge--secondary {
    background-color: var(--color-secondary);
    color: #FFFFFF;
}

/* Icons */
.icon {
    width: 1.25rem;
    height: 1.25rem;
    color: var(--color-primary);
}

/* Section Titles */
.section-title {
    font-size: var(--text-3xl);
    font-weight: var(--font-bold);
    text-align: center;
    margin-bottom: var(--space-xl);
    color: var(--color-text);
}

/* Links */
.link {
    color: var(--color-primary);
    text-decoration: underline;
    text-underline-offset: 2px;
}

.link:hover {
    color: var(--color-primary-dark);
}

/* Required indicator */
.required {
    color: var(--color-error);
}

/* Honeypot (anti-spam) */
.honeypot {
    position: absolute;
    left: -9999px;
    width: 1px;
    height: 1px;
    opacity: 0;
}

/* 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-width: 0;
}

/* Responsive Typography */
@media (max-width: 768px) {
    body {
        font-size: var(--text-sm);
    }
}