:root {
    --bg-dark: #f8f9fa; /* Fondo general muy claro */
    --card-bg: #ffffff; /* Fondo blanco puro */
    --accent: #1a365d; /* Azul marino glaciar oscuro */
    --accent-hover: #102a45; /* Azul aún más oscuro para hovers */
    --text-primary: #333333; /* Texto principal oscuro */
    --text-secondary: #666666; /* Texto secundario gris */
    --border: #e0e0e0; /* Bordes suaves */
    --danger: #d9534f; 
    --warning: #f0ad4e;
    --success: #5cb85c;
    --topbar-bg: #10223b; /* Topbar más oscuro que el glaciar */
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

body {
    background-color: var(--bg-dark);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    font-size: 13.5px; /* Más pequeña y elegante */
    font-weight: 300; /* Texto más ligero, nada de negrita pesada */
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    color: var(--text-primary);
    font-weight: 400; /* Moderno y fino, no más bold */
    letter-spacing: -0.5px;
}

p {
    color: var(--text-secondary);
    line-height: 1.7;
    font-weight: 300;
}

a {
    color: var(--accent);
    text-decoration: none;
    transition: all 0.3s ease;
}
a:hover {
    color: var(--accent-hover);
}

/* Layout */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    width: 100%;
}

/* Topbar */
.topbar {
    background-color: var(--topbar-bg);
    padding: 8px 0;
    font-size: 0.8rem;
    color: #a0aec0;
    font-weight: 300;
}
.topbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.topbar-contact span {
    margin-right: 15px;
}

/* Header & Nav */
.header {
    background-color: var(--accent); /* Menú azul marino glaciar */
    border-bottom: none;
    padding: 15px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
}

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

.logo {
    font-size: 1.4rem;
    font-weight: 300; /* Logo elegante */
    color: #ffffff;
    display: flex;
    align-items: center;
    gap: 10px;
    letter-spacing: 1px;
}
.logo span {
    color: #90cdf4; /* Tono azul más claro para el acento del logo */
}

.nav-menu {
    display: flex;
    gap: 15px;
    list-style: none;
    align-items: center;
}
.nav-menu li a {
    color: #f0f4f8; /* Blanco hueso para buena lectura en fondo azul */
    font-weight: 300;
    padding: 8px 12px;
    border-radius: 4px;
    font-size: 0.9rem;
    border: 1px solid transparent;
}
.nav-menu li a:hover,
.nav-menu li a.active {
    background-color: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.2);
    color: #ffffff;
}

/* Hamburger Menu */
.hamburger {
    display: none;
    cursor: pointer;
    background: none;
    border: none;
    color: #ffffff;
    font-size: 1.5rem;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 8px 20px;
    border-radius: 3px; /* Más moderno */
    font-weight: 400; /* Sin bold */
    text-align: center;
    cursor: pointer;
    transition: all 0.3s;
    border: none;
    font-size: 0.9rem;
    letter-spacing: 0.5px;
}

.btn-primary {
    background-color: #ffffff;
    color: var(--accent);
    border: 1px solid var(--accent);
}
.btn-primary:hover {
    background-color: var(--accent);
    color: #ffffff;
}

/* En el menú, el boton primary se ve sobre fondo azul, así que lo ajustamos */
.header .btn-primary {
    background-color: #ffffff;
    color: var(--accent);
    border: none;
}
.header .btn-primary:hover {
    background-color: #e2e8f0;
    color: var(--accent);
}

.btn-outline {
    background-color: transparent;
    border: 1px solid var(--border);
    color: var(--text-primary);
}
.btn-outline:hover {
    background-color: #f5f5f5;
    color: var(--text-primary);
}

.header .btn-outline {
    border-color: rgba(255,255,255,0.4);
    color: #ffffff;
}
.header .btn-outline:hover {
    background-color: rgba(255,255,255,0.1);
    color: #ffffff;
}

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

.btn-block {
    display: block;
    width: 100%;
}

/* Cards */
.card {
    background-color: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 25px;
    margin-bottom: 20px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.08);
}

.card-header {
    border-bottom: 1px solid var(--border);
    padding-bottom: 15px;
    margin-bottom: 15px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* Forms */
.form-group {
    margin-bottom: 15px;
}
.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: 400;
    color: var(--text-primary);
    font-size: 0.9rem;
}
.form-control {
    width: 100%;
    padding: 10px 12px;
    border-radius: 6px;
    border: 1px solid var(--border);
    background-color: var(--bg-dark);
    color: var(--text-primary);
    font-size: 0.9rem;
    font-weight: 300;
    transition: all 0.3s ease;
}
.form-control:focus {
    outline: none;
    border-color: var(--accent);
    background-color: #ffffff;
    box-shadow: 0 0 0 2px rgba(26, 54, 93, 0.1);
}

/* Badges / Zones */
.zone-badge {
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    display: inline-block;
    margin-bottom: 10px;
    color: white;
    letter-spacing: 0.5px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.15);
}
.zone-buy {
    background-color: var(--success);
}
.zone-sell {
    background-color: var(--danger);
}
.zone-wait {
    background-color: var(--warning);
}

/* Dropdown Menu */
.dropdown {
    position: relative;
    display: inline-block;
}
.dropdown-content {
    display: none;
    position: absolute;
    background-color: var(--card-bg);
    min-width: 180px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
    z-index: 1000;
    border-radius: 8px;
    overflow: hidden;
    margin-top: 5px;
    border: 1px solid var(--border);
}
.dropdown-content a {
    color: var(--text-primary) !important;
    padding: 12px 16px;
    text-decoration: none;
    display: block;
    font-size: 0.9rem;
}
.dropdown-content a:hover {
    background-color: var(--bg-dark);
}
.dropdown:hover .dropdown-content {
    display: block;
}

/* Modal Images */
.modal {
    display: none; 
    position: fixed; 
    z-index: 2000; 
    padding-top: 50px; 
    left: 0;
    top: 0;
    width: 100%; 
    height: 100%; 
    overflow: auto; 
    background-color: rgba(0,0,0,0.9); 
}
.modal-content {
    margin: auto;
    display: block;
    max-width: 90%;
    max-height: 80vh;
    border-radius: 8px;
}
.modal-close {
    position: absolute;
    top: 15px;
    right: 35px;
    color: #f1f1f1;
    font-size: 40px;
    font-weight: bold;
    transition: 0.3s;
    cursor: pointer;
}
.modal-close:hover, .modal-close:focus {
    color: #bbb;
    text-decoration: none;
    cursor: pointer;
}

/* Grid Layout */
.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

/* Hero Section */
.hero {
    padding: 70px 0;
    text-align: center;
    background-color: var(--card-bg);
    border-bottom: 1px solid var(--border);
}
.hero h1 {
    font-size: 2.2rem;
    margin-bottom: 20px;
    color: var(--text-primary);
    font-weight: 300;
}
.hero p {
    font-size: 1.05rem;
    max-width: 700px;
    margin: 0 auto 30px;
    color: var(--text-secondary);
}
.hero-buttons {
    display: flex;
    justify-content: center;
    gap: 15px;
}
.hero .btn-primary {
    background-color: var(--accent);
    color: #ffffff;
}
.hero .btn-primary:hover {
    background-color: var(--accent-hover);
}

/* Main Content */
main {
    flex: 1;
    padding: 40px 0;
}

/* Footer */
.footer {
    background-color: var(--card-bg);
    border-top: 1px solid var(--border);
    padding: 30px 0;
    text-align: center;
    margin-top: auto;
    font-size: 0.8rem;
}
.disclaimer {
    color: var(--text-secondary);
    max-width: 800px;
    margin: 0 auto;
    padding: 15px;
    background-color: var(--bg-dark);
    border: 1px solid var(--border);
    border-radius: 4px;
    font-weight: 300;
}

/* Responsive */
@media (max-width: 768px) {
    .hamburger {
        display: block;
    }
    
    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: var(--accent);
        flex-direction: column;
        padding: 15px;
        border-top: 1px solid rgba(255,255,255,0.1);
        box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    }
    
    .nav-menu.active {
        display: flex;
    }
    
    .hero h1 {
        font-size: 1.8rem;
    }
    
    .topbar .container {
        flex-direction: column;
        gap: 5px;
        text-align: center;
    }
}