/**
 * LH GLOBAL SERVICE S.A.C. - Estilos Personalizados
 * Sitio web corporativo - Estudio Contable
 */

/* ============================================
   VARIABLES CSS (Paleta de Colores)
   ============================================ */
:root {
    /* Colores Corporativos (basados en la tarjeta) */
    --color-primary: #001f5c;        /* Azul corporativo */
    --color-primary-dark: #001540;   /* Azul oscuro hover */
    --color-accent: #D4AF37;         /* Dorado corporativo */
    --color-accent-light: #F59E0B;   /* Dorado claro */
    --color-header-black: #0a0a0a;   /* Negro header */
    
    /* Colores Neutros */
    --color-white: #ffffff;
    --color-gray-50: #f9fafb;
    --color-gray-100: #f3f4f6;
    --color-gray-300: #d1d5db;
    --color-gray-400: #9ca3af;
    --color-gray-600: #4b5563;
    --color-gray-700: #374151;
    --color-gray-800: #1f2937;
    --color-slate-950: #020617;
    
    /* Tipografía */
    --font-sans: 'Inter', sans-serif;
    --font-serif: 'Playfair Display', serif;
    
    /* Transiciones */
    --transition-fast: 150ms ease;
    --transition-normal: 300ms ease;
    --transition-slow: 500ms ease;
    
    /* Sombras */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1);
}

/* ============================================
   RESET Y BASE
   ============================================ */
*, *::before, *::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-sans);
    line-height: 1.6;
    color: var(--color-gray-700);
    background-color: var(--color-white);
    margin: 0;
    padding: 0;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ============================================
   TIPOGRAFÍA
   ============================================ */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-serif);
    font-weight: 700;
    line-height: 1.2;
    margin-top: 0;
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

@media (min-width: 768px) {
    h1 { font-size: 3.5rem; }
    h2 { font-size: 2.5rem; }
    h3 { font-size: 1.75rem; }
}

p {
    margin-top: 0;
    margin-bottom: 1rem;
}

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

a:hover {
    color: var(--color-accent-light);
}

/* ============================================
   HEADER Y NAVEGACIÓN
   ============================================ */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 50;
}

.header-top {
    background-color: var(--color-header-black);
    border-bottom: 1px solid rgba(212, 175, 55, 0.3);
}

.header-bar {
    background-color: var(--color-primary);
    height: 4px;
}

.nav-link {
    color: var(--color-gray-300);
    font-size: 0.875rem;
    font-weight: 500;
    padding: 0.5rem 0;
    transition: color var(--transition-normal);
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-accent);
}

.btn-whatsapp {
    background-color: var(--color-accent);
    color: var(--color-black);
    font-weight: 600;
    padding: 0.625rem 1.25rem;
    border-radius: 2px;
    transition: all var(--transition-normal);
}

.btn-whatsapp:hover {
    background-color: var(--color-accent-light);
    color: var(--color-black);
}

/* Mobile Menu */
.mobile-menu {
    background-color: var(--color-header-black);
    border-top: 1px solid var(--color-gray-800);
}

.mobile-menu-link {
    color: var(--color-gray-300);
    padding: 0.75rem 0;
    display: block;
    transition: color var(--transition-fast);
}

.mobile-menu-link:hover {
    color: var(--color-accent);
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero {
    position: relative;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: 80px; /* Header height */
}

.hero-bg {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background-color: rgba(0, 0, 0, 0.7);
}

.hero-content {
    position: relative;
    z-index: 10;
    text-align: center;
    padding: 1rem;
    max-width: 5xl;
}

.hero-pretitle {
    color: var(--color-accent);
    font-size: 0.875rem;
    font-weight: 500;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-bottom: 1rem;
}

.hero-title {
    color: var(--color-white);
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    line-height: 1.1;
}

@media (min-width: 768px) {
    .hero-title {
        font-size: 4rem;
    }
}

.hero-subtitle {
    color: var(--color-gray-300);
    font-size: 1.125rem;
    max-width: 48rem;
    margin: 0 auto 2.5rem;
    font-weight: 300;
}

/* ============================================
   BOTONES
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    padding: 1rem 2rem;
    border-radius: 2px;
    transition: all var(--transition-normal);
    cursor: pointer;
    border: none;
    font-size: 1rem;
}

.btn-primary {
    background-color: var(--color-accent);
    color: var(--color-black);
}

.btn-primary:hover {
    background-color: var(--color-accent-light);
    color: var(--color-black);
}

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

.btn-secondary:hover {
    background-color: var(--color-white);
    color: var(--color-black);
}

.btn-dark {
    background-color: var(--color-black);
    color: var(--color-white);
}

.btn-dark:hover {
    background-color: var(--color-gray-800);
}

/* ============================================
   SECCIONES
   ============================================ */
.section {
    padding: 5rem 1rem;
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    text-align: center;
}

.section-subtitle {
    color: var(--color-gray-600);
    font-size: 1.125rem;
    text-align: center;
    max-width: 48rem;
    margin: 0 auto;
}

@media (min-width: 768px) {
    .section {
        padding: 5rem 1.5rem;
    }
}

/* ============================================
   TARJETAS DE SERVICIOS
   ============================================ */
.service-card {
    background-color: var(--color-white);
    padding: 2rem;
    border-radius: 2px;
    border: 1px solid var(--color-gray-100);
    transition: box-shadow var(--transition-normal);
}

.service-card:hover {
    box-shadow: var(--shadow-xl);
}

.service-icon {
    width: 3.5rem;
    height: 3.5rem;
    background-color: rgba(212, 175, 55, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    border-radius: 2px;
}

.service-icon i {
    color: var(--color-accent);
    font-size: 1.5rem;
}

.service-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    color: var(--color-black);
}

.service-description {
    color: var(--color-gray-600);
    margin-bottom: 1.5rem;
    line-height: 1.75;
}

.service-link {
    color: var(--color-accent);
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    transition: color var(--transition-fast);
}

.service-link:hover {
    color: var(--color-accent-light);
}

.service-link i {
    margin-left: 0.5rem;
    transition: transform var(--transition-fast);
}

.service-link:hover i {
    transform: translateX(4px);
}

/* ============================================
   BARRA DE CONFIANZA
   ============================================ */
.trust-bar {
    background-color: var(--color-primary);
    padding: 2rem 1rem;
}

.trust-item {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    text-align: center;
}

.trust-icon {
    color: var(--color-accent);
    font-size: 1.875rem;
}

.trust-title {
    color: var(--color-white);
    font-weight: 700;
    font-size: 1.25rem;
    display: block;
}

.trust-description {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.875rem;
}

@media (min-width: 768px) {
    .trust-item:not(:first-child) {
        border-left: 1px solid rgba(255, 255, 255, 0.2);
        padding-left: 1.5rem;
    }
}

/* ============================================
   FORMULARIOS
   ============================================ */
.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-gray-700);
    margin-bottom: 0.5rem;
}

.form-label-required::after {
    content: ' *';
    color: var(--color-accent);
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--color-gray-300);
    border-radius: 2px;
    font-family: var(--font-sans);
    font-size: 1rem;
    color: var(--color-gray-700);
    transition: all var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(212, 175, 55, 0.2);
}

.form-input::placeholder,
.form-textarea::placeholder {
    color: var(--color-gray-400);
}

.form-textarea {
    resize: vertical;
    min-height: 8rem;
}

/* ============================================
   FOOTER
   ============================================ */
.site-footer {
    background-color: var(--color-header-black);
    border-top: 2px solid var(--color-accent);
    padding: 3rem 1rem 1.5rem;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.footer-brand-icon {
    color: var(--color-accent);
    font-size: 1.5rem;
}

.footer-brand-name {
    font-family: var(--font-serif);
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--color-white);
}

.footer-slogan {
    color: var(--color-gray-400);
    font-size: 0.875rem;
    font-style: italic;
    margin-bottom: 0.5rem;
}

.footer-ruc {
    color: var(--color-gray-500);
    font-size: 0.75rem;
}

.footer-title {
    color: var(--color-white);
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.footer-links {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-links li {
    margin-bottom: 0.5rem;
}

.footer-link {
    color: var(--color-gray-400);
    font-size: 0.875rem;
    transition: color var(--transition-fast);
}

.footer-link:hover {
    color: var(--color-accent);
}

.footer-contact-item {
    display: flex;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
    align-items: flex-start;
}

.footer-contact-icon {
    color: var(--color-accent);
    margin-top: 0.25rem;
}

.footer-contact-text {
    color: var(--color-gray-400);
    font-size: 0.875rem;
}

.footer-copyright {
    border-top: 1px solid var(--color-gray-800);
    padding-top: 1.5rem;
    margin-top: 2rem;
}

.footer-copyright-text {
    color: var(--color-gray-500);
    font-size: 0.875rem;
    text-align: center;
}

/* ============================================
   UTILIDADES
   ============================================ */
.container {
    max-width: 80rem;
    margin: 0 auto;
    padding-left: 1rem;
    padding-right: 1rem;
}

@media (min-width: 640px) {
    .container {
        padding-left: 1.5rem;
        padding-right: 1.5rem;
    }
}

.text-center { text-align: center; }
.text-accent { color: var(--color-accent); }
.text-white { color: var(--color-white); }
.text-primary { color: var(--color-primary); }

.bg-accent { background-color: var(--color-accent); }
.bg-primary { background-color: var(--color-primary); }
.bg-header-black { background-color: var(--color-header-black); }

/* ============================================
   ANIMACIONES
   ============================================ */
@keyframes bounce {
    0%, 100% {
        transform: translateY(-25%);
        animation-timing-function: cubic-bezier(0.8, 0, 1, 1);
    }
    50% {
        transform: translateY(0);
        animation-timing-function: cubic-bezier(0, 0, 0.2, 1);
    }
}

.animate-bounce {
    animation: bounce 1s infinite;
}

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

/* Focus visible para navegación por teclado */
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}