:root {
    --bg-light: #f5f6f8;
    --red-fage: #e50914;
    --red-glow: rgba(229, 9, 20, 0.4);
    --text-dark: #111111;
    --text-muted: #666666;
    --card-bg: rgba(255, 255, 255, 0.85);
    --card-border: rgba(255, 255, 255, 0.95);
    --font-main: 'Montserrat', sans-serif;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    background-color: var(--bg-light);
    color: var(--text-dark);
    font-family: var(--font-main);
    min-height: 100vh;
    overflow-x: hidden;
}

/* FONDO CLARO */
#bg-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: -1;
    background: linear-gradient(to right, rgba(245, 246, 248, 0.92) 30%, rgba(245, 246, 248, 0.5)),
                url('../assets/fd_servicios.jpg') center/cover no-repeat;
}

/* HEADER ADAPTADO */
.header-bar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: 15px 5%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 500;
    background: rgba(245, 246, 248, 0.92) !important;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(220, 225, 230, 0.6);
}

.brand-logo {
    display: flex;
    align-items: center;
    z-index: 600;
}

.logo-img {
    height: clamp(34px, 4.5vw, 48px);
    width: auto;
    object-fit: contain;
}

/* NAV ESCRITORIO */
.top-nav {
    display: flex;
    gap: 20px;
    align-items: center;
}

.nav-link {
    color: var(--text-muted) !important;
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-link:hover,
.nav-link.active {
    color: var(--text-dark) !important;
    font-weight: 800;
}

/* BOTÓN HAMBURGUESA */
.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 5px;
    cursor: pointer;
    padding: 8px;
    border: none;
    background: transparent;
    z-index: 600;
    outline: none;
}

.nav-toggle span {
    display: block;
    width: 26px;
    height: 2px;
    background: var(--text-dark);
    border-radius: 2px;
    transition: all 0.35s cubic-bezier(0.23, 1, 0.32, 1);
}

.nav-toggle.open span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
    background: var(--red-fage);
}

.nav-toggle.open span:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
}

.nav-toggle.open span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
    background: var(--red-fage);
}

/* MENÚ DESPLEGABLE MÓVIL */
.nav-dropdown {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    height: 100dvh;
    background: rgba(245, 246, 248, 0.98);
    backdrop-filter: blur(25px);
    -webkit-backdrop-filter: blur(25px);
    z-index: 550;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: flex-start;
    padding: 80px 10% 40px 10%;
    gap: 10px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-20px);
    transition: all 0.35s ease;
}

.nav-dropdown.open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.mobile-nav-link {
    display: flex;
    align-items: center;
    gap: 15px;
    text-decoration: none;
    color: var(--text-muted);
    font-size: clamp(1.3rem, 4vw, 2.2rem);
    font-weight: 900;
    text-transform: uppercase;
    padding: 8px 0;
    width: 100%;
    transition: all 0.3s ease;
}

.mobile-nav-link:hover,
.mobile-nav-link.active {
    color: var(--red-fage);
    padding-left: 10px;
}

.mobile-nav-link .nav-num {
    font-size: 0.8rem;
    color: rgba(0, 0, 0, 0.3);
}

.mobile-nav-link:hover .nav-num,
.mobile-nav-link.active .nav-num {
    color: var(--red-fage);
}

/* CONTENEDOR PRINCIPAL */
.servicios-container {
    padding-top: 130px;
    padding-left: 5%;
    padding-right: 5%;
    padding-bottom: 80px;
    max-width: 1400px;
    margin: 0 auto;
}

/* PESTAÑAS DE NAVEGACIÓN CLARAS */
.category-tabs {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.tab-btn {
    background: rgba(255, 255, 255, 0.7);
    border: 1px solid rgba(0, 0, 0, 0.1);
    padding: 12px 26px;
    border-radius: 25px;
    font-family: var(--font-main);
    font-weight: 700;
    font-size: 0.85rem;
    color: var(--text-muted);
    cursor: pointer;
    transition: all 0.3s ease;
    backdrop-filter: blur(5px);
}

.tab-btn:hover,
.tab-btn.active {
    background: var(--text-dark);
    color: #ffffff;
    border-color: var(--text-dark);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.15);
}

/* SECCIONES Y ENCABEZADOS DE CATEGORÍA */
.services-category {
    display: none;
    animation: fadeIn 0.4s ease forwards;
}

.services-category.active {
    display: block;
}

@keyframes fadeIn {
    from { 
        opacity: 0; 
        transform: translateY(12px); 
    }
    to { 
        opacity: 1; 
        transform: translateY(0); 
    }
}

.category-header {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 40px auto;
}

.category-header h2 {
    font-size: clamp(1.6rem, 3vw, 2.2rem);
    font-weight: 900;
    color: var(--text-dark);
    margin-bottom: 10px;
}

.category-header .highlight {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-muted);
    display: block;
    margin-top: 4px;
}

.category-header p {
    font-size: 0.95rem;
    color: var(--text-muted);
    line-height: 1.6;
}

/* GRID RESPONSIVO */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 25px;
    justify-content: center;
}

/* TARJETAS BLANCAS CON VIDRIO ESMERILADO */
.service-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 20px;
    padding: 35px 25px;
    text-align: center;
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.service-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.12);
    border-color: rgba(229, 9, 20, 0.3);
}

.card-icon {
    font-size: 2.3rem;
    color: var(--text-dark);
    margin-bottom: 20px;
}

.service-card h3 {
    font-size: 1rem;
    font-weight: 800;
    color: var(--text-dark);
    margin-bottom: 12px;
    line-height: 1.3;
}

.service-card p {
    font-size: 0.85rem;
    line-height: 1.6;
    color: var(--text-muted);
}

/* ==========================================
   REGLAS RESPONSIVAS
   ========================================== */

@media (max-width: 900px) {
    .top-nav {
        display: none; /* Oculta la barra horizontal en móviles/tablets */
    }

    .nav-toggle {
        display: flex; /* Muestra el botón hamburguesa */
    }

    .btn-header-cta {
        display: none; /* Oculta el botón CTA secundario en móviles */
    }
}

@media (max-width: 480px) {
    .servicios-container {
        padding-top: 100px;
    }

    .tab-btn {
        padding: 9px 18px;
        font-size: 0.78rem;
    }
}