/* --- FUENTE Y VARIABLES --- */
@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&display=swap');

:root {
    --primary: #0F2537;         /* Azul Petróleo Profundo */
    --primary-blue: #4673B2;    /* Azul Marca ARKONOIL */
    --primary-light: #1C2553;   /* Azul Marino Corporativo */
    --secondary: #2563EB;       /* Azul Eléctrico */
    --accent: #E31B23;          /* Rojo Energía ARKONOIL */
    --accent-hover: #B81118;
    --dark: #0D131A;            /* Texto / Fondos Oscuros */
    --light: #F8FAFC;           /* Fondo Claro Limpio */
    --card-bg: #FFFFFF;
    --border-color: #E2E8F0;
    --text-muted: #64748B;
    --white: #FFFFFF;
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
    --font: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
    --shadow-sm: 0 2px 8px rgba(15, 37, 55, 0.04);
    --shadow-md: 0 10px 25px -5px rgba(15, 37, 55, 0.08), 0 8px 10px -6px rgba(15, 37, 55, 0.04);
    --shadow-lg: 0 20px 35px -10px rgba(15, 37, 55, 0.12), 0 10px 15px -7px rgba(15, 37, 55, 0.06);
}

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

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

body {
    font-family: var(--font);
    color: var(--dark);
    line-height: 1.6;
    background-color: var(--white);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

.container {
    width: 90%;
    max-width: 1240px;
    margin: 0 auto;
}

.section {
    padding: 20px 0;
    scroll-margin-top: 80px;
}

.bg-light {
    background-color: var(--light);
}

.text-center { text-align: center; }
.mb-5 { margin-bottom: 3.5rem; }

h1, h2, h3, .section-title {
    text-transform: uppercase;
}

/* --- HEADER & NAVIGATION --- */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: var(--white);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.06);
    z-index: 1000;
    transition: var(--transition);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 120px;
    transition: height 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

.header.scrolled {
    box-shadow: 0 4px 18px rgba(0, 0, 0, 0.12);
}

.header.scrolled .nav-container {
    height: 80px;
}

.logo img {
    height: 100px;
    width: auto;
    display: block;
    transition: var(--transition);
}

.header.scrolled .logo img {
    height: 65px;
}

.nav-list {
    display: flex;
    list-style: none;
    gap: 28px;
}

.nav-link {
    text-decoration: none;
    color: var(--primary);
    font-weight: 600;
    font-size: 1rem;
    position: relative;
    padding: 6px 0;
    transition: var(--transition);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0%;
    height: 2px;
    background-color: var(--accent);
    transition: var(--transition);
}

.nav-link:hover::after, 
.nav-link.active::after {
    width: 100%;
}

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

.nav-actions {
    display: flex;
    align-items: center;
    gap: 15px;
}

.btn-lang {
    background: rgba(15, 37, 55, 0.05);
    border: 1px solid var(--border-color);
    color: var(--primary);
    padding: 8px 16px;
    border-radius: 30px;
    cursor: pointer;
    font-weight: 700;
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition);
}

.btn-lang:hover {
    background: var(--primary);
    color: var(--white);
    border-color: var(--primary);
    transform: scale(1.04);
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    background: none;
    border: none;
    gap: 6px;
    padding: 5px;
}

.bar {
    width: 26px;
    height: 2.5px;
    background-color: var(--primary);
    border-radius: 2px;
    transition: var(--transition);
}

/* --- HERO SECTION (Actualizado con base #102054 y gradiente) --- */
.hero {
    position: relative;
    min-height: 100vh;
    /*background: linear-gradient(135deg, rgba(16, 32, 84, 0.86) 0%, rgba(13, 19, 26, 0.90) 100%), 
                url('../images/fondo.jpg') center/cover no-repeat fixed;
    */
    background: url('../images/fondo.jpg') center / cover no-repeat fixed;

    display: flex;
    align-items: center;
    color: var(--white);
    padding-top: 140px;  
    padding-bottom: 40px;  
}

.hero-content {
    max-width: 1050px;
    z-index: 2;
}

.badge {
    display: inline-flex;
    align-items: center;
    background: rgba(227, 27, 35, 0.15);
    border: 1px solid rgba(227, 27, 35, 0.4);
    color: #FF6B6B;
    padding: 8px 20px;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    margin-bottom: 24px;
    backdrop-filter: blur(4px);
}

.hero h1 {
    font-size: 3rem;
    font-weight: 800;
    line-height: 1.25;
    letter-spacing: -0.02em;
    margin-bottom: 24px;
    max-width: 700px;
}

.hero p {
    font-size: 1.25rem;
    margin-bottom: 36px;
    color: rgba(255, 255, 255, 0.85);
    font-weight: 400;
    max-width: 720px;
}

.hero-btns {
    display: flex;
    gap: 18px;
}

.hero .fade-in {
    opacity: 0;
    transform: translateY(25px);
    animation: heroFadeUp 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.hero .badge.fade-in { animation-delay: 0.15s; }
.hero h1.fade-in { animation-delay: 0.3s; }
.hero p.fade-in { animation-delay: 0.45s; }
.hero-btns.fade-in { animation-delay: 0.6s; }

@keyframes heroFadeUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 32px;
    border-radius: var(--radius-sm);
    text-decoration: none;
    font-weight: 700;
    font-size: 1rem;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    text-transform: uppercase;
}

.btn-primary {
    background-color: var(--accent);
    color: var(--white);
    box-shadow: 0 4px 15px rgba(227, 27, 35, 0.35);
}

.btn-primary:hover {
    background-color: var(--accent-hover);
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(227, 27, 35, 0.45);
}

.btn-outline {
    border: 2px solid rgba(255, 255, 255, 0.4);
    color: var(--white);
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(4px);
}

.btn-outline:hover {
    background-color: var(--white);
    color: var(--primary);
    border-color: var(--white);
    transform: translateY(-3px);
}

.btn-block {
    width: 100%;
}

/* --- GRIDS & CARDS --- */
.grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 50px;
    align-items: center;
    margin-top: 20px;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--primary-light);
    margin-bottom: 16px;
    letter-spacing: -0.02em;
}

/* --- TARJETAS GENERALES --- */
.card {
    background: var(--card-bg);
    padding: 36px 30px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--accent), var(--secondary));
    opacity: 0;
    transition: var(--transition);
}

.card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}

.card:hover::before {
    opacity: 1;
}

.card-icon {
    width: 64px;
    height: 64px;
    background: rgba(227, 27, 35, 0.08);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    color: var(--accent);
    margin-bottom: 24px;
    transition: var(--transition);
}

.card:hover .card-icon {
    background: var(--accent);
    color: var(--white);
    transform: scale(1.1) rotate(4deg);
}

.card h3 {
    color: var(--primary);
    font-size: 1.35rem;
    font-weight: 700;
    margin-bottom: 14px;
}

.card p {
    color: var(--text-muted);
    font-size: 0.98rem;
    line-height: 1.6;
}

/* --- NUEVAS TARJETAS DE SERVICIOS (Con Imagen y sin iconos) --- */
.service-card {
    background: var(--card-bg);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--accent), var(--secondary));
    opacity: 0;
    transition: var(--transition);
    z-index: 3;
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}

.service-card:hover::before {
    opacity: 1;
}

.service-img-container {
    width: 100%;
    height: 210px;
    overflow: hidden;
    position: relative;
}

.service-img-container img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.1s cubic-bezier(0.16, 1, 0.3, 1);
}

.service-card:hover .service-img-container img {
    transform: scale(1.08);
}

.service-content {
    padding: 28px 24px;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.service-card h3 {
    color: var(--primary);
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 12px;
}

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

/* --- FILOSOFÍA CORPORATIVA --- */
.card-blue {
    background: var(--primary-blue);
    color: var(--white);
    border-color: var(--primary-blue);
}
.card-blue h3 { color: var(--white); }
.card-blue p { color: rgba(255, 255, 255, 0.92); }
.card-blue .card-icon { background: rgba(255, 255, 255, 0.2); color: var(--white); }

.card-red {
    background: var(--accent);
    color: var(--white);
    border-color: var(--accent);
}
.card-red h3 { color: var(--white); }
.card-red p { color: rgba(255, 255, 255, 0.92); }
.card-red .card-icon { background: rgba(255, 255, 255, 0.2); color: var(--white); }

.card-white {
    background: var(--white);
    color: var(--dark);
    border: 1px solid var(--border-color);
}
.card-white h3 { color: var(--primary); }
.card-white .card-icon { background: rgba(15, 37, 55, 0.08); color: var(--primary); }

.about-card {
    /*background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    */
    background-color: var(--primary-light);

    color: var(--white);
    padding: 48px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    position: relative;
    transition: var(--transition);
}

.about-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 25px 45px -10px rgba(15, 37, 55, 0.25);
}

.about-card h3 {
    color: #FF858A;
    font-size: 1.6rem;
    margin-bottom: 16px;
}

.about-card p {
    color: rgba(255, 255, 255, 0.88);
}

.card ul {
    list-style: none;
}

.card ul li {
    margin-bottom: 12px;
    color: inherit;
    font-weight: 500;
    display: flex;
    align-items: center;
}

/* --- CONTACT --- */
.info-item {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    margin-bottom: 30px;
}

.info-item i {
    width: 48px;
    height: 48px;
    background: rgba(227, 27, 35, 0.1);
    color: var(--accent);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    flex-shrink: 0;
    transition: var(--transition);
}

.info-item:hover i {
    background: var(--accent);
    color: var(--white);
    transform: scale(1.1);
}

.info-item h4 {
    font-size: 1.05rem;
    color: var(--primary);
    margin-bottom: 4px;
}

.info-item p {
    color: var(--text-muted);
}

.contact-form {
    background: var(--white);
    padding: 40px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-md);
}

.form-group {
    margin-bottom: 20px;
}

.form-group input, 
.form-group textarea {
    width: 100%;
    padding: 14px 18px;
    border: 1.5px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-family: inherit;
    font-size: 0.95rem;
    transition: var(--transition);
    background-color: #FAFAFA;
}

.form-group input:focus, 
.form-group textarea:focus {
    outline: none;
    border-color: var(--secondary);
    background-color: var(--white);
    box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.1);
}

/* --- FLOATING BUTTONS --- */
.floating-buttons {
    position: fixed;
    bottom: 28px;
    right: 28px;
    display: flex;
    flex-direction: column;
    gap: 14px;
    z-index: 999;
}

.float-btn {
    width: 52px;
    height: 52px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 1.5rem;
    box-shadow: 0 8px 20px rgba(0,0,0,0.2);
    text-decoration: none;
    transition: var(--transition);
}

.float-btn.whatsapp {
    animation: floatPulse 3s infinite ease-in-out;
}

.float-btn:hover {
    transform: scale(1.15) translateY(-3px);
    box-shadow: 0 12px 25px rgba(0,0,0,0.3);
}

@keyframes floatPulse {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-6px); }
}

.whatsapp { background-color: #25D366; }
.instagram { background: linear-gradient(45deg, #f09433 0%, #e6683c 25%, #dc2743 50%, #cc2366 75%, #bc1888 100%); }
.tiktok { background-color: #111111; }

/* --- FOOTER --- */
.footer {
    background-color: var(--dark);
    color: rgba(255, 255, 255, 0.7);
    padding: 35px 0;
    font-size: 0.9rem;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}

/* --- ANIMACIONES AL HACER SCROLL --- */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(35px);
    transition: opacity 0.75s cubic-bezier(0.16, 1, 0.3, 1), transform 0.75s cubic-bezier(0.16, 1, 0.3, 1);
    transition-delay: var(--delay, 0s);
    will-change: opacity, transform;
}

.animate-on-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}

/* --- RESPONSIVE --- */
@media (max-width: 1024px) {
    .grid-3 { grid-template-columns: repeat(2, 1fr); }
    .hero h1 { font-size: 2.8rem; }
}

@media (max-width: 768px) {
    .hamburger { display: flex; }

    .hamburger.active .bar:nth-child(1) { transform: translateY(8px) rotate(45deg); }
    .hamburger.active .bar:nth-child(2) { opacity: 0; }
    .hamburger.active .bar:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

    .hero h1 { font-size: 2.2rem; }

    .nav-menu {
        position: fixed;
        top: 80px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 80px);
        background-color: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(16px);
        flex-direction: column;
        align-items: center;
        justify-content: center;
        transition: var(--transition);
        box-shadow: var(--shadow-lg);
    }

    .nav-menu.active { left: 0; }

    .nav-list {
        flex-direction: column;
        align-items: center;
        gap: 28px;
    }

    .nav-link { font-size: 1.2rem; }

    .grid-2, .grid-3 { grid-template-columns: 1fr; }

    .section { padding: 40px 0; }
    
    .hero {
        padding-top: 120px;
        text-align: center;
        padding-bottom: 40px;   
        padding-top: 140px; 
        /*background: linear-gradient(135deg, rgba(16, 32, 84, 0.78) 0%, rgba(13, 19, 26, 0.82) 100%), 
                    url('../images/fondo.jpg') right top / cover no-repeat fixed;
        */
        background: url('../images/fondo.jpg') 25% center / cover no-repeat scroll;
    }

    .hero p {
        margin-left: auto;
        margin-right: auto;
    }

    .hero-btns {
        flex-direction: column;
        width: 100%;
    }

    .btn { width: 100%; }

    .about-card { padding: 30px; }

    .contact-form { padding: 24px; }
}

.float-btn.pdf-btn {
    background-color: var(--accent); /* O el color que prefieras, ej. el rojo corporativo */
}
.float-btn.pdf-btn:hover {
    background-color: var(--accent-hover);
}