:root {
    --primary-color: #0d3b66; /* Azul profundo del agua */
    --secondary-color: #f4d35e; /* Tierra/Dorado industrial */
    --accent-color: #ee964b; /* Acento naranjo para alertas/llamados a acción */
    --bg-dark: #0a0908;
    --text-light: #f4f4f9;
    --text-dark: #333333;
    --font-main: 'Outfit', sans-serif;
}

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

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

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
}

/* Header */
.main-header {
    background-color: rgba(10, 9, 8, 0.9);
    backdrop-filter: blur(10px);
    padding: 20px 0;
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.main-header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo h1 {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--text-light);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.logo span {
    color: var(--secondary-color);
}

nav ul {
    list-style: none;
    display: flex;
    gap: 25px;
    align-items: center;
}

nav a {
    color: var(--text-light);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s;
    font-size: 0.95rem;
}

nav a:hover {
    color: var(--secondary-color);
}

.btn-login {
    background-color: var(--primary-color);
    padding: 10px 24px;
    border-radius: 5px;
    box-shadow: 0 4px 15px rgba(13, 59, 102, 0.4);
}

.btn-login:hover {
    background-color: #145da0;
    color: white;
}

/* Hero Section */
.hero {
    height: 85vh;
    display: flex;
    align-items: center;
    /* Imagen de stock temporal (maquinaria/agua) */
    background: linear-gradient(rgba(10, 9, 8, 0.7), rgba(10, 9, 8, 0.8)), url('https://images.unsplash.com/photo-1541888086925-ebde895d5272?auto=format&fit=crop&q=80&w=1920') no-repeat center center/cover;
}

.hero h2 {
    font-size: 4rem;
    margin-bottom: 20px;
    color: var(--secondary-color);
    line-height: 1.1;
}

.hero p {
    font-size: 1.25rem;
    margin-bottom: 35px;
    max-width: 600px;
    color: #cccccc;
}

.btn-primary {
    display: inline-block;
    background-color: var(--secondary-color);
    color: var(--bg-dark);
    padding: 16px 35px;
    text-decoration: none;
    font-weight: 800;
    border-radius: 5px;
    transition: transform 0.3s, background-color 0.3s, box-shadow 0.3s;
}

.btn-primary:hover {
    background-color: #ffde6b;
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(244, 211, 94, 0.2);
}