/* ========== VARIABLES GLOBALES ========== */
:root {
    --rtb-light: #57c5b6;
    --rtb-medium: #159895;
    --rtb-dark: #1a5f7a;
    --rtb-deep: #002b5b;
    --rtb-white: #ffffff;
    --rtb-gold: #ad9551;
    --rtb-black: #000000;
    --rtb-nav: #246a62;
    --transition: 0.3s ease;
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.1);
    --border-radius: 8px;
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem; 
    --spacing-xl: 3rem;
}

/* ========== RESET Y ESTILOS BASE ========== */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:focus-visible {
    outline: 2px solid var(--rtb-gold);
    outline-offset: 2px;
}

body {
    overflow-x: hidden;
    background-color: var(--rtb-white);
    color: var(--rtb-black);
    font-family: 'Times New Roman', Times, serif;
    line-height: 1.6;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

main {
    flex: 1;
}

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

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

        button {
            cursor: pointer;
            border: none;
            background: none;
            font-family: inherit;
            transition: all var(--transition);
        }

        ul {
            list-style: none;
        }

        /* ========== COMPONENTES REUTILIZABLES ========== */
        .container {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 var(--spacing-md);
        }

        .section {
            padding: var(--spacing-xl) 0;
        }

        .section-title {
            font-size: clamp(1.8rem, 5vw, 2.5rem);
            font-weight: 700;
            color: var(--rtb-deep);
            line-height: 1.2;
            margin-bottom: var(--spacing-md);
            position: relative;
            padding-bottom: var(--spacing-sm);
            text-align: center;
        }

        .section-title::after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 4px;
            background-color: var(--rtb-gold);
            border-radius: 2px;
        }

        .section-subtitle {
            font-size: clamp(1.3rem, 3vw, 1.6rem);
            font-weight: 600;
            color: var(--rtb-dark);
            margin: var(--spacing-lg) 0 var(--spacing-sm);
            line-height: 1.3;
        }

        .paragraph {
            font-size: clamp(1rem, 1.1vw, 1.1rem);
            margin-bottom: var(--spacing-sm);
            color: var(--rtb-dark-gray);
        }

        .highlight {
            font-size: clamp(1.1rem, 2vw, 1.3rem);
            font-weight: 700;
            color: var(--rtb-gold);
            margin: var(--spacing-lg) 0;
            padding: var(--spacing-md);
            text-align: center;
            border-left: 4px solid var(--rtb-gold);
            background-color: rgba(173, 149, 81, 0.05);
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
        }

        .btn {
            display: inline-block;
            padding: 0.8rem 1.8rem;
            border-radius: var(--border-radius);
            font-weight: 500;
            text-align: center;
            transition: all var(--transition);
            box-shadow: var(--shadow-sm);
            font-size: 1rem;
        }

        .btn-primary {
            background: var(--rtb-gold);
            color: var(--rtb-white);
        }

        .btn-primary:hover {
            background: #9c8449;
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }

        .btn-secondary {
            background: var(--rtb-medium);
            color: var(--rtb-white);
        }

        .btn-secondary:hover {
            background: var(--rtb-dark);
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }

        .card {
            background: var(--rtb-white);
            border-radius: var(--border-radius);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }

        .card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-lg);
        }

/* ========== HERO SECTION ========== */
.hero-section {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: linear-gradient(rgba(26, 95, 122, 0.3), rgba(0, 43, 91, 0.3)), url('../img/inicio/img-hero.png') no-repeat center center/cover;
    padding: var(--spacing-md);
    color: var(--rtb-white);
    text-align: center;
}

.hero-container {
    max-width: 75rem;
    width: 100%;
    position: relative;
    z-index: 2;
    padding: var(--spacing-lg) var(--spacing-md);
    text-align: center;
}

.hero-content {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-md);
    max-width: 56.25rem;
    margin: 0 auto;
}

.hero-title {
    font-size: clamp(2.2rem, 6vw, 3.8rem);
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.hero-subtitle {
    font-size: clamp(1.1rem, 3vw, 1.6rem);
    font-weight: 400;
    line-height: 1.6;
    margin-bottom: var(--spacing-lg);
    max-width: 50rem;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

.hero-search-container {
    display: flex;
    width: 100%;
    max-width: 43.75rem;
    margin: 0 auto var(--spacing-md);
    position: relative;
}

.hero-search {
    flex: 1;
    padding: 1.1rem 1.5rem;
    border-radius: var(--border-radius);
    border: none;
    font-size: 1.1rem;
    box-shadow: var(--shadow-md);
    padding-right: 4.5rem;
}

.hero-button {
    position: absolute;
    right: 0.5rem;
    top: 50%;
    transform: translateY(-50%);
    background-color: var(--rtb-gold);
    border: none;
    border-radius: var(--border-radius);
    padding: 0.75rem 1.5rem;
    cursor: pointer;
    color: white;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: background-color var(--transition);
}

.hero-button:hover {
    background-color: #9c8449;
}

.hero-nav {
    background-color: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: var(--border-radius);
    padding: var(--spacing-sm);
    width: 100%;
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-nav-links {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    list-style: none;
}

.hero-nav-links li a {
    display: inline-block;
    padding: 0.7rem 1.5rem;
    background: rgba(255, 255, 255, 0.15);
    border-radius: var(--border-radius);
    font-weight: 500;
    transition: all var(--transition);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.hero-nav-links li a:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: translateY(-2px);
}