/* ============================================
   Vargas Enterprise S.L. — styles.css
   ============================================ */

/* ============================================
   1. CSS Custom Properties
   ============================================ */
:root {
    --color-primary: #0A1628;
    --color-secondary: #1E40AF;
    --color-accent: #3B82F6;
    --color-surface: #F8FAFC;
    --color-white: #FFFFFF;
    --color-border: #E2E8F0;
    --color-text: #1E293B;
    --color-text-secondary: #64748B;
    --color-footer-bg: #0F172A;
    --color-footer-text: #CBD5E1;
    --color-success: #059669;

    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

    --max-width: 1200px;
    --section-padding: 48px;
    --section-padding-lg: 80px;
    --content-padding: 24px;

    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;

    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);

    --transition: 150ms ease;

    --nav-height: 64px;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-family);
    font-size: 1rem;
    line-height: 1.7;
    color: var(--color-text);
    background-color: var(--color-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

img, svg {
    display: block;
    max-width: 100%;
}

a {
    color: var(--color-secondary);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

a:visited {
    color: var(--color-secondary);
}

ul, ol {
    list-style: none;
}

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

/* ============================================
   3. Typography
   ============================================ */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.25;
    color: var(--color-primary);
}

h1 {
    font-size: clamp(2rem, 5vw, 3rem);
    line-height: 1.2;
}

h2 {
    font-size: clamp(1.625rem, 3.5vw, 2.25rem);
    line-height: 1.3;
}

h3 {
    font-size: clamp(1.25rem, 2.5vw, 1.5rem);
    font-weight: 600;
    line-height: 1.4;
}

h4 {
    font-size: 1.125rem;
    font-weight: 600;
}

p {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--color-text);
}

.lead {
    font-size: 1.125rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
}

small {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
}

/* ============================================
   4. Layout
   ============================================ */
.container {
    width: 100%;
    max-width: var(--max-width);
    margin-left: auto;
    margin-right: auto;
    padding-left: var(--content-padding);
    padding-right: var(--content-padding);
}

.section {
    padding-top: var(--section-padding);
    padding-bottom: var(--section-padding);
}

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

.section-dark {
    background-color: var(--color-secondary);
    color: var(--color-white);
}

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

.section-header {
    margin-bottom: 40px;
    text-align: center;
}

.section-header h2 {
    margin-bottom: 12px;
}

.section-header p {
    color: var(--color-text-secondary);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.grid-3 {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
}

.grid-2 {
    display: grid;
    grid-template-columns: 1fr;
    gap: 32px;
}

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

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

/* ============================================
   5. Header & Navigation
   ============================================ */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    height: var(--nav-height);
    background-color: var(--color-white);
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-sm);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    max-width: var(--max-width);
    margin-left: auto;
    margin-right: auto;
    padding-left: var(--content-padding);
    padding-right: var(--content-padding);
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    flex-shrink: 0;
}

.logo-monogram {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background-color: var(--color-secondary);
    border-radius: var(--radius-sm);
    flex-shrink: 0;
}

.logo-wordmark {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-primary);
    white-space: nowrap;
}

.logo:hover .logo-wordmark {
    color: var(--color-secondary);
    text-decoration: none;
}

.nav-links {
    display: none;
    align-items: center;
    gap: 8px;
}

.nav-links li a {
    display: block;
    padding: 8px 12px;
    font-size: 1rem;
    font-weight: 500;
    color: var(--color-text);
    border-radius: var(--radius-sm);
    transition: color var(--transition), background-color var(--transition);
    text-decoration: none;
}

.nav-links li a:hover,
.nav-links li a[aria-current="page"] {
    color: var(--color-secondary);
    background-color: var(--color-surface);
}

.nav-toggle {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 5px;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-sm);
    padding: 8px;
    transition: background-color var(--transition);
}

.nav-toggle:hover {
    background-color: var(--color-surface);
}

.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after {
    display: block;
    width: 20px;
    height: 2px;
    background-color: var(--color-primary);
    border-radius: 2px;
    transition: transform var(--transition), opacity var(--transition);
    position: relative;
}

.nav-toggle span::before,
.nav-toggle span::after {
    content: '';
    position: absolute;
    left: 0;
}

.nav-toggle span::before { top: -6px; }
.nav-toggle span::after { top: 6px; }

/* Mobile menu open state */
.nav-links.is-open {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    position: absolute;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background-color: var(--color-white);
    border-bottom: 1px solid var(--color-border);
    padding: 16px 24px;
    gap: 4px;
    box-shadow: var(--shadow-md);
}

/* ============================================
   6. Hero Section
   ============================================ */
.hero {
    padding-top: calc(var(--nav-height) + var(--section-padding));
    padding-bottom: var(--section-padding);
    background: linear-gradient(135deg, var(--color-primary) 0%, #1a2e4a 60%, #1E40AF 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        radial-gradient(circle at 20% 50%, rgba(59, 130, 246, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(6, 182, 212, 0.06) 0%, transparent 40%);
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 720px;
}

.hero h1 {
    color: var(--color-white);
    margin-bottom: 20px;
}

.hero .lead {
    color: rgba(255, 255, 255, 0.82);
    margin-bottom: 36px;
    font-size: 1.125rem;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    align-items: center;
}

/* ============================================
   7. Content Sections
   ============================================ */
.about-preview {
    padding-top: var(--section-padding);
    padding-bottom: var(--section-padding);
}

.about-preview h2 {
    margin-bottom: 16px;
}

.about-preview p {
    margin-bottom: 16px;
    color: var(--color-text-secondary);
}

.cta-section {
    text-align: center;
    padding-top: var(--section-padding);
    padding-bottom: var(--section-padding);
}

.cta-section h2 {
    color: var(--color-white);
    margin-bottom: 12px;
}

.cta-section p {
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: 28px;
    font-size: 1.125rem;
}

/* Trust bar */
.trust-bar {
    background-color: var(--color-surface);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
    padding: 28px 0;
}

.trust-items {
    display: flex;
    flex-wrap: wrap;
    gap: 24px;
    justify-content: center;
    align-items: center;
}

.trust-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text-secondary);
}

.trust-item-icon {
    width: 20px;
    height: 20px;
    color: var(--color-success);
    flex-shrink: 0;
}

/* ============================================
   8. Cards
   ============================================ */
.card {
    background-color: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 28px 24px;
    box-shadow: var(--shadow-sm);
    transition: box-shadow var(--transition), transform var(--transition);
}

.card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.card-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    background-color: rgba(30, 64, 175, 0.08);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    flex-shrink: 0;
}

.card-icon svg {
    width: 24px;
    height: 24px;
    color: var(--color-secondary);
}

.card h3 {
    color: var(--color-primary);
    margin-bottom: 10px;
    font-size: 1.125rem;
}

.card p {
    color: var(--color-text-secondary);
    font-size: 0.9375rem;
    line-height: 1.6;
}

/* ============================================
   9. Buttons
   ============================================ */
.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    background-color: var(--color-secondary);
    color: var(--color-white);
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    border: 2px solid var(--color-secondary);
    text-decoration: none;
    transition: background-color var(--transition), box-shadow var(--transition), border-color var(--transition);
    white-space: nowrap;
}

.btn-primary:hover {
    background-color: #1E3A8A;
    border-color: #1E3A8A;
    box-shadow: 0 4px 12px rgba(30, 64, 175, 0.35);
    color: var(--color-white);
    text-decoration: none;
}

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

.btn-outline {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    background-color: transparent;
    color: var(--color-white);
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    border: 2px solid rgba(255, 255, 255, 0.6);
    text-decoration: none;
    transition: background-color var(--transition), border-color var(--transition), color var(--transition);
    white-space: nowrap;
}

.btn-outline:hover {
    background-color: rgba(255, 255, 255, 0.1);
    border-color: var(--color-white);
    color: var(--color-white);
    text-decoration: none;
}

.btn-outline:visited {
    color: var(--color-white);
}

.btn-outline-dark {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    background-color: transparent;
    color: var(--color-secondary);
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    border: 2px solid var(--color-secondary);
    text-decoration: none;
    transition: background-color var(--transition), color var(--transition);
    white-space: nowrap;
}

.btn-outline-dark:hover {
    background-color: var(--color-secondary);
    color: var(--color-white);
    text-decoration: none;
}

.btn-white {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    background-color: var(--color-white);
    color: var(--color-secondary);
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    border: 2px solid var(--color-white);
    text-decoration: none;
    transition: background-color var(--transition), box-shadow var(--transition);
    white-space: nowrap;
}

.btn-white:hover {
    background-color: #EFF6FF;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    color: var(--color-secondary);
    text-decoration: none;
}

.btn-white:visited {
    color: var(--color-secondary);
}

/* ============================================
   10. Forms
   ============================================ */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text);
    margin-bottom: 6px;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 10px 14px;
    font-family: inherit;
    font-size: 1rem;
    color: var(--color-text);
    background-color: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: border-color var(--transition), box-shadow var(--transition);
    appearance: none;
    -webkit-appearance: none;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

.form-group textarea {
    min-height: 120px;
    resize: vertical;
}

/* ============================================
   11. Footer
   ============================================ */
.site-footer {
    background-color: var(--color-footer-bg);
    color: var(--color-footer-text);
    padding-top: 56px;
    padding-bottom: 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 40px;
    padding-bottom: 48px;
}

.footer-brand .logo-wordmark {
    color: var(--color-white);
    font-size: 1.125rem;
    margin-bottom: 12px;
    display: block;
}

.footer-brand p {
    color: var(--color-footer-text);
    font-size: 0.875rem;
    line-height: 1.6;
    margin-bottom: 0;
}

.footer-nav-title {
    color: var(--color-white);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    margin-bottom: 16px;
}

.footer-nav-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.footer-nav-list a {
    color: var(--color-footer-text);
    font-size: 0.9375rem;
    text-decoration: none;
    transition: color var(--transition);
}

.footer-nav-list a:hover {
    color: var(--color-white);
    text-decoration: none;
}

.footer-nav-list a:visited {
    color: var(--color-footer-text);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    padding: 20px 0;
    display: flex;
    flex-direction: column;
    gap: 8px;
    align-items: flex-start;
}

.footer-copyright {
    font-size: 0.8125rem;
    color: rgba(203, 213, 225, 0.7);
    margin-bottom: 0;
}

.footer-nif {
    font-size: 0.75rem;
    color: rgba(203, 213, 225, 0.5);
    margin-bottom: 0;
}

/* ============================================
   12. Legal pages
   ============================================ */
.legal-content {
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.legal-content h2 {
    font-size: 1.375rem;
    margin-top: 40px;
    margin-bottom: 16px;
    padding-top: 8px;
    border-top: 1px solid var(--color-border);
}

.legal-content h2:first-of-type {
    margin-top: 24px;
    border-top: none;
}

.legal-content p {
    margin-bottom: 16px;
    color: var(--color-text-secondary);
}

.legal-content ul {
    list-style: disc;
    padding-left: 24px;
    margin-bottom: 16px;
    color: var(--color-text-secondary);
}

.legal-content ul li {
    margin-bottom: 8px;
}

.legal-content strong {
    color: var(--color-text);
}

/* ============================================
   13. Page header (inner pages)
   ============================================ */
.page-header {
    background: linear-gradient(135deg, var(--color-primary) 0%, #1a2e4a 100%);
    padding-top: calc(var(--nav-height) + 48px);
    padding-bottom: 48px;
}

.page-header h1 {
    color: var(--color-white);
    margin-bottom: 8px;
}

.page-header p {
    color: rgba(255, 255, 255, 0.8);
}

.breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 16px;
    font-size: 0.875rem;
}

.breadcrumb a {
    color: rgba(255, 255, 255, 0.65);
    text-decoration: none;
}

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

.breadcrumb span {
    color: rgba(255, 255, 255, 0.4);
}

/* ============================================
   14. 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;
}

.sr-only-focusable:focus {
    position: fixed;
    top: 8px;
    left: 8px;
    width: auto;
    height: auto;
    padding: 12px 20px;
    clip: auto;
    white-space: normal;
    background-color: var(--color-secondary);
    color: var(--color-white);
    font-weight: 600;
    border-radius: var(--radius-sm);
    z-index: 9999;
    text-decoration: none;
    box-shadow: var(--shadow-lg);
}

.link-arrow {
    color: var(--color-secondary);
    font-weight: 500;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    transition: gap var(--transition);
}

.link-arrow:hover {
    gap: 8px;
    text-decoration: none;
}

.mt-8  { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mt-32 { margin-top: 32px; }
.mb-8  { margin-bottom: 8px; }
.mb-16 { margin-bottom: 16px; }
.mb-24 { margin-bottom: 24px; }

/* ============================================
   15. Focus styles (accessibility)
   ============================================ */
:focus-visible {
    outline: 3px solid var(--color-accent);
    outline-offset: 3px;
    border-radius: 2px;
}

a:focus-visible,
button:focus-visible {
    outline: 3px solid var(--color-accent);
    outline-offset: 3px;
}

/* ============================================
   16. Media queries: tablet (640px+)
   ============================================ */
@media (min-width: 640px) {
    .section {
        padding-top: 64px;
        padding-bottom: 64px;
    }

    .hero {
        padding-top: calc(var(--nav-height) + 64px);
        padding-bottom: 64px;
    }

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

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

    .footer-bottom {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
    }

    .trust-items {
        gap: 32px;
    }
}

/* ============================================
   17. Media queries: desktop (1024px+)
   ============================================ */
@media (min-width: 1024px) {
    .section {
        padding-top: var(--section-padding-lg);
        padding-bottom: var(--section-padding-lg);
    }

    .hero {
        padding-top: calc(var(--nav-height) + var(--section-padding-lg));
        padding-bottom: var(--section-padding-lg);
    }

    .nav-links {
        display: flex;
    }

    .nav-toggle {
        display: none;
    }

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

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

    .footer-grid {
        grid-template-columns: 2fr 1fr 1fr;
        gap: 48px;
    }

    .trust-items {
        gap: 48px;
        flex-wrap: nowrap;
    }
}

/* ============================================
   18. Print styles
   ============================================ */
@media print {
    .site-header,
    .nav-toggle,
    .hero-actions,
    .cta-section,
    .site-footer { display: none; }

    body { font-size: 12pt; color: #000; }
    a { color: #000; text-decoration: underline; }
    .container { max-width: 100%; padding: 0; }
    .section { padding: 16pt 0; }
}

/* ============================================
   19. Reduced motion
   ============================================ */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}