/* ========================================
   Business MC - Estilos Principales
   ======================================== */

/* Variables CSS */
:root {
    /* Colores principales - Basados en el logo BMC */
    --primary-900: #1a2e4a;
    --primary-800: #2b4a6f;
    --primary-700: #3a5a80;
    --primary-600: #4a6a90;
    --primary-500: #3498db;
    --primary-400: #5dade2;
    --primary-300: #85c1e9;
    --primary-200: #aed6f1;
    --primary-100: #d6eaf8;
    --primary-50: #ebf5fb;

    /* Neutros */
    --gray-900: #1a202c;
    --gray-800: #2d3748;
    --gray-700: #4a5568;
    --gray-600: #718096;
    --gray-500: #a0aec0;
    --gray-400: #cbd5e0;
    --gray-300: #e2e8f0;
    --gray-200: #edf2f7;
    --gray-100: #f7fafc;
    --white: #ffffff;

    /* Tipografía */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;

    /* Espaciado */
    --spacing-1: 0.25rem;
    --spacing-2: 0.5rem;
    --spacing-3: 0.75rem;
    --spacing-4: 1rem;
    --spacing-5: 1.25rem;
    --spacing-6: 1.5rem;
    --spacing-8: 2rem;
    --spacing-10: 2.5rem;
    --spacing-12: 3rem;
    --spacing-16: 4rem;
    --spacing-20: 5rem;

    /* Transiciones */
    --transition-fast: 150ms ease;
    --transition-base: 300ms ease;
    --transition-slow: 500ms ease;

    /* Sombras */
    --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);

    /* Border radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.375rem;
    --radius-lg: 0.5rem;
    --radius-xl: 0.75rem;
    --radius-full: 9999px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--gray-800);
    background-color: var(--white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

ul {
    list-style: none;
}

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

/* Container */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-4);
}

@media (min-width: 768px) {
    .container {
        padding: 0 var(--spacing-6);
    }
}

/* ========================================
   Top Bar
   ======================================== */
.top-bar {
    background-color: var(--primary-900);
    color: var(--white);
    font-size: var(--font-size-sm);
    padding: var(--spacing-2) 0;
}

.top-bar-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.top-bar-left span {
    opacity: 0.9;
}

.top-bar-right {
    display: flex;
    gap: var(--spacing-4);
}

.top-bar-right a {
    color: var(--white);
    opacity: 0.8;
    transition: opacity var(--transition-fast);
    display: flex;
    align-items: center;
}

.top-bar-right a:hover {
    opacity: 1;
}

/* ========================================
   Header
   ======================================== */
.header {
    background-color: var(--white);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: background-color var(--transition-base), box-shadow var(--transition-base);
    border-bottom: 4px solid var(--primary-500);
}

.header.scrolled {
    background-color: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow-lg);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-3) var(--spacing-4);
}

@media (min-width: 768px) {
    .header-content {
        padding: var(--spacing-4) var(--spacing-6);
    }
}

@media (min-width: 992px) {
    .header-content {
        padding: var(--spacing-5) var(--spacing-6);
    }
}

/* Logo */
.logo {
    display: flex;
    align-items: center;
    padding: var(--spacing-2) 0;
}

.logo img {
    height: auto;
    width: 200px;
    object-fit: contain;
}

@media (min-width: 576px) {
    .logo img {
        width: 240px;
    }
}

@media (min-width: 768px) {
    .logo img {
        width: 280px;
    }
}

@media (min-width: 992px) {
    .logo img {
        width: 320px;
    }
}

/* Navigation */
.nav {
    display: none;
}

@media (min-width: 992px) {
    .nav {
        display: block;
    }
}

.nav-list {
    display: flex;
    align-items: center;
    gap: var(--spacing-1);
}

.nav-link {
    color: var(--gray-700);
    padding: var(--spacing-2) var(--spacing-4);
    font-size: var(--font-size-sm);
    font-weight: 500;
    border-radius: var(--radius-md);
    transition: background-color var(--transition-fast), color var(--transition-fast);
}

.nav-link:hover {
    background-color: var(--gray-100);
    color: var(--primary-500);
}

.nav-link-cta {
    background-color: var(--primary-500);
    color: var(--white);
    margin-left: var(--spacing-2);
}

.nav-link-cta:hover {
    background-color: var(--primary-400);
    color: var(--white);
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: flex;
    flex-direction: column;
    gap: 5px;
    padding: var(--spacing-2);
    z-index: 1001;
}

@media (min-width: 992px) {
    .mobile-menu-toggle {
        display: none;
    }
}

.mobile-menu-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--gray-700);
    transition: transform var(--transition-base), opacity var(--transition-base);
}

.mobile-menu-toggle.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.mobile-menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* Mobile Navigation */
@media (max-width: 991px) {
    .nav {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background-color: var(--primary-800);
        display: flex;
        align-items: center;
        justify-content: center;
        opacity: 0;
        visibility: hidden;
        transition: opacity var(--transition-base), visibility var(--transition-base);
    }

    .nav.active {
        opacity: 1;
        visibility: visible;
    }

    .nav-list {
        flex-direction: column;
        gap: var(--spacing-2);
    }

    .nav-link {
        font-size: var(--font-size-xl);
        padding: var(--spacing-3) var(--spacing-6);
        color: var(--white);
    }

    .nav-link:hover {
        background-color: rgba(255, 255, 255, 0.1);
        color: var(--white);
    }

    .nav-link-cta {
        margin-left: 0;
        margin-top: var(--spacing-4);
        background-color: var(--primary-400);
    }

    .nav-link-cta:hover {
        background-color: var(--primary-300);
    }
}

/* ========================================
   Hero Slider
   ======================================== */
.hero-slider {
    position: relative;
    height: 100vh;
    min-height: 600px;
    max-height: 900px;
    overflow: hidden;
}

.slider {
    position: relative;
    height: 100%;
}

.slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-slow), visibility var(--transition-slow);
}

.slide.active {
    opacity: 1;
    visibility: visible;
}

.slide-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    background-color: var(--primary-800);
}

.slide-content {
    position: relative;
    height: 100%;
    display: flex;
    align-items: center;
    color: var(--white);
    padding-top: 80px;
}

.slide-title {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    margin-bottom: var(--spacing-6);
    line-height: 1.2;
}

@media (min-width: 768px) {
    .slide-title {
        font-size: var(--font-size-4xl);
    }
}

@media (min-width: 992px) {
    .slide-title {
        font-size: var(--font-size-5xl);
    }
}

.slide-text {
    max-width: 700px;
    margin-bottom: var(--spacing-8);
}

.slide-text p {
    font-size: var(--font-size-base);
    line-height: 1.7;
    margin-bottom: var(--spacing-4);
    opacity: 0.95;
}

@media (min-width: 768px) {
    .slide-text p {
        font-size: var(--font-size-lg);
    }
}

.slide-text ul {
    margin: var(--spacing-4) 0;
    padding-left: var(--spacing-6);
}

.slide-text li {
    position: relative;
    margin-bottom: var(--spacing-2);
    padding-left: var(--spacing-2);
}

.slide-text li::before {
    content: '';
    position: absolute;
    left: -1rem;
    top: 0.6em;
    width: 6px;
    height: 6px;
    background-color: var(--primary-300);
    border-radius: var(--radius-full);
}

.slide-text blockquote {
    font-style: italic;
    font-weight: 500;
    padding: var(--spacing-4);
    background-color: rgba(255, 255, 255, 0.1);
    border-left: 4px solid var(--primary-300);
    border-radius: var(--radius-md);
    margin-top: var(--spacing-4);
}

/* Slider Controls */
.slider-controls {
    position: absolute;
    bottom: var(--spacing-8);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
    gap: var(--spacing-4);
    z-index: 10;
}

.slider-arrow {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-full);
    background-color: rgba(255, 255, 255, 0.2);
    color: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color var(--transition-fast);
}

.slider-arrow:hover {
    background-color: rgba(255, 255, 255, 0.3);
}

.slider-dots {
    display: flex;
    gap: var(--spacing-2);
}

.slider-dot {
    width: 12px;
    height: 12px;
    border-radius: var(--radius-full);
    background-color: rgba(255, 255, 255, 0.4);
    transition: background-color var(--transition-fast), transform var(--transition-fast);
}

.slider-dot:hover {
    background-color: rgba(255, 255, 255, 0.6);
}

.slider-dot.active {
    background-color: var(--white);
    transform: scale(1.2);
}

/* ========================================
   Highlight Section (Nosotros)
   ======================================== */
.highlight-section {
    background: linear-gradient(135deg, var(--primary-800), var(--primary-500));
    padding: var(--spacing-16) 0;
    text-align: center;
}

@media (max-width: 480px) {
    .highlight-section {
        padding: var(--spacing-12) 0;
    }
}

.highlight-content {
    max-width: 800px;
    margin: 0 auto;
}

.highlight-title {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--white);
    margin-bottom: var(--spacing-4);
}

@media (min-width: 768px) {
    .highlight-title {
        font-size: var(--font-size-4xl);
    }
}

.highlight-text {
    font-size: var(--font-size-lg);
    color: var(--primary-100);
    margin-bottom: var(--spacing-8);
    line-height: 1.7;
}

@media (min-width: 768px) {
    .highlight-text {
        font-size: var(--font-size-xl);
    }
}

/* ========================================
   Buttons
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-3) var(--spacing-6);
    font-size: var(--font-size-base);
    font-weight: 600;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    cursor: pointer;
}

.btn-primary {
    background-color: var(--primary-500);
    color: var(--white);
    border: none;
}

.btn-primary:hover {
    background-color: var(--primary-400);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

.btn-outline:hover {
    background-color: var(--white);
    color: var(--primary-800);
}

.btn-full {
    width: 100%;
}

/* ========================================
   Expertise Section
   ======================================== */
.expertise-section {
    padding: var(--spacing-20) 0;
    background-color: var(--gray-100);
}

.section-title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--primary-800);
    text-align: center;
    margin-bottom: var(--spacing-2);
}

@media (min-width: 768px) {
    .section-title {
        font-size: var(--font-size-3xl);
    }
}

.section-subtitle {
    font-size: var(--font-size-lg);
    color: var(--gray-600);
    text-align: center;
    margin-bottom: var(--spacing-12);
}

.expertise-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-6);
}

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

@media (min-width: 992px) {
    .expertise-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.expertise-card {
    background-color: var(--white);
    padding: var(--spacing-8);
    border-radius: var(--radius-xl);
    text-align: center;
    transition: transform var(--transition-base), box-shadow var(--transition-base);
    box-shadow: var(--shadow-sm);
}

.expertise-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.expertise-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-6);
    background: linear-gradient(135deg, var(--primary-100), var(--primary-50));
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-500);
}

.expertise-card h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--primary-800);
    margin-bottom: var(--spacing-3);
}

.expertise-card p {
    font-size: var(--font-size-sm);
    color: var(--gray-600);
    line-height: 1.6;
}

/* ========================================
   Services Section
   ======================================== */
.services-section {
    padding: var(--spacing-20) 0;
    background-color: var(--white);
}

.services-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-6);
}

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

@media (min-width: 992px) {
    .services-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.service-card {
    padding: var(--spacing-8);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-xl);
    transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

.service-card:hover {
    border-color: var(--primary-300);
    box-shadow: var(--shadow-lg);
}

.service-number {
    display: inline-block;
    font-size: var(--font-size-3xl);
    font-weight: 800;
    color: var(--primary-200);
    margin-bottom: var(--spacing-4);
}

.service-card h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--primary-800);
    margin-bottom: var(--spacing-3);
}

.service-card p {
    font-size: var(--font-size-base);
    color: var(--gray-600);
    line-height: 1.6;
}

/* ========================================
   Careers Section
   ======================================== */
.careers-section {
    padding: var(--spacing-20) 0;
    background: linear-gradient(135deg, var(--primary-800), var(--primary-500));
}

@media (max-width: 480px) {
    .careers-section {
        padding: var(--spacing-12) 0;
    }
}

.careers-content {
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
}

.careers-section .section-title {
    color: var(--white);
}

.careers-text {
    font-size: var(--font-size-lg);
    color: var(--primary-100);
    margin-bottom: var(--spacing-8);
    line-height: 1.7;
}

/* ========================================
   Contact Section
   ======================================== */
.contact-section {
    padding: var(--spacing-16) 0;
    background-color: var(--gray-900);
    color: var(--white);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-10);
}

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

@media (min-width: 992px) {
    .contact-grid {
        grid-template-columns: 1fr 1fr 1.5fr;
    }
}

.contact-col h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-6);
    color: var(--white);
}

/* Footer Nav */
.footer-nav li {
    margin-bottom: var(--spacing-3);
}

.footer-nav a {
    color: var(--gray-400);
    font-size: var(--font-size-sm);
    transition: color var(--transition-fast);
}

.footer-nav a:hover {
    color: var(--primary-300);
}

/* Social Links Footer */
.social-links-footer {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-4);
    margin-bottom: var(--spacing-6);
}

.social-links-footer a {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    color: var(--gray-400);
    font-size: var(--font-size-sm);
    transition: color var(--transition-fast);
}

.social-links-footer a:hover {
    color: var(--primary-300);
}

.contact-info {
    color: var(--gray-400);
    font-size: var(--font-size-sm);
}

.contact-info strong {
    color: var(--gray-300);
}

/* Contact Form */
.contact-form-col {
    background-color: var(--gray-800);
    padding: var(--spacing-8);
    border-radius: var(--radius-xl);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-4);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2);
}

.form-group label {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--gray-300);
}

.form-group input,
.form-group textarea {
    padding: var(--spacing-3) var(--spacing-4);
    background-color: var(--gray-700);
    border: 1px solid var(--gray-600);
    border-radius: var(--radius-md);
    color: var(--white);
    font-size: var(--font-size-base);
    font-family: inherit;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-400);
    box-shadow: 0 0 0 3px rgba(66, 153, 225, 0.2);
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

/* ========================================
   Footer
   ======================================== */
.footer {
    background-color: var(--primary-900);
    padding: var(--spacing-6) 0;
}

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

.footer p {
    color: var(--gray-500);
    font-size: var(--font-size-sm);
}

.scroll-top {
    width: 44px;
    height: 44px;
    background-color: var(--primary-700);
    color: var(--white);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color var(--transition-fast), transform var(--transition-fast);
}

.scroll-top:hover {
    background-color: var(--primary-600);
    transform: translateY(-3px);
}

/* ========================================
   Animations
   ======================================== */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.6s ease forwards;
}

/* ========================================
   Responsive Improvements
   ======================================== */

/* Extra small devices */
@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-3);
    }

    .hero-slider {
        min-height: 500px;
    }

    .slide-title {
        font-size: var(--font-size-2xl);
    }

    .slide-text {
        font-size: var(--font-size-sm);
    }

    .slide-text p {
        font-size: var(--font-size-sm);
    }

    .slide-text blockquote {
        font-size: var(--font-size-sm);
        padding: var(--spacing-3);
    }

    .slider-controls {
        bottom: var(--spacing-4);
        gap: var(--spacing-2);
    }

    .slider-arrow {
        width: 40px;
        height: 40px;
    }

    .slider-dot {
        width: 10px;
        height: 10px;
    }

    .btn {
        padding: var(--spacing-2) var(--spacing-4);
        font-size: var(--font-size-sm);
    }

    .highlight-title {
        font-size: var(--font-size-2xl);
    }

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

    .section-title {
        font-size: var(--font-size-xl);
    }

    .section-subtitle {
        font-size: var(--font-size-base);
    }

    .expertise-card,
    .service-card {
        padding: var(--spacing-6);
    }

    .expertise-icon {
        width: 60px;
        height: 60px;
    }

    .expertise-icon svg {
        width: 32px;
        height: 32px;
    }

    .service-number {
        font-size: var(--font-size-2xl);
    }

    .contact-form-col {
        padding: var(--spacing-6);
    }

    .top-bar-left {
        display: none;
    }

    .footer-content {
        flex-direction: column;
        gap: var(--spacing-4);
        text-align: center;
    }
}

/* Small devices */
@media (max-width: 768px) {
    .slide-text ul {
        padding-left: var(--spacing-4);
    }

    .expertise-section,
    .services-section {
        padding: var(--spacing-12) 0;
    }

    .contact-grid {
        gap: var(--spacing-8);
    }
}

/* Top bar responsive */
@media (max-width: 576px) {
    .top-bar-content {
        justify-content: center;
    }

    .top-bar-right {
        gap: var(--spacing-3);
    }
}

/* ========================================
   Utilities
   ======================================== */
.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;
}