/* =================== Global Box-Sizing =================== */
*,
*::before,
*::after {
    box-sizing: border-box;
}

/* =================== Barra Superior Fija =================== */
.header-bar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 60px;
    background-color: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    padding: 0 var(--spacing-md);
    z-index: 1000;
    box-shadow: 0 2px 4px var(--color-shadow);
}

/* Secciones de la barra */
.header-left {
    display: flex;
    justify-content: flex-start;
    align-items: center;
}

.header-center {
    display: flex;
    justify-content: center;
    align-items: center;
}

.header-right {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    flex: 1;
}

/* Logo */
.header-logo {
    flex: 0 0 auto;
    max-width: 200px;
    height: 40px;
    display: flex;
    align-items: center;
}

.logo-image {
    max-height: 100%;
    max-width: 100%;
    object-fit: contain;
}

/* Título */
/* Título principal moderno */
/* Título principal moderno ajustado */
.header-title {
    text-align: center;
    text-transform: uppercase;
    font-family: 'Poppins', 'Segoe UI', sans-serif;
    font-weight: 900;
    font-size: clamp(0.9rem, 2vw, 1.3rem); /* un poco más pequeño */
    letter-spacing: 0.12rem;
    background: linear-gradient(90deg, #004080, #0059b3, #003366); /* azul más oscuro */
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin: 0;
    padding: 0;
    position: relative;
}



/* Contenedor de enlaces */
.header-nav {
    display: flex;
    gap: var(--spacing-sm);
    align-items: center;
    flex: 0 0 auto;
}



/* Estilos generales de enlaces */
/* =================== BOTONES MINIMALISTAS GLASS =================== */
/* Estilos generales de enlaces - Glass Effect */
.header-nav .nav-link {
    display: inline-flex;
    align-items: center;
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: var(--font-size-sm);
    font-weight: 500;
    text-decoration: none;
    color: var(--color-text);
    border-radius: 0.75rem;
    transition: all 0.3s ease;
    white-space: nowrap;
    
    /* Efecto Glass */
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    
    /* Borde sutil interno */
    position: relative;
    overflow: hidden;
}

.header-nav .nav-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(255,255,255,0.1) 0%, rgba(255,255,255,0.05) 100%);
    border-radius: 0.75rem;
    z-index: -1;
}

.header-nav .nav-link:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
    border-color: rgba(255, 255, 255, 0.3);
    background: rgba(255, 255, 255, 0.15);
}

.header-nav .nav-link:active {
    transform: translateY(0);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

/* Diferenciar botones con variaciones sutiles */
.nav-dashboard {
    color: var(--color-text);
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.15);
}

.nav-login {
    color: var(--color-primary);
    background: rgba(74, 144, 226, 0.1);
    border: 1px solid rgba(74, 144, 226, 0.3);
    font-weight: 600;
}

.nav-register {
    color: #fff;
    background: linear-gradient(135deg, rgba(74, 144, 226, 0.9) 0%, rgba(58, 123, 213, 0.9) 100%);
    border: 1px solid rgba(74, 144, 226, 0.4);
    font-weight: 600;
    box-shadow: 0 4px 8px rgba(74, 144, 226, 0.3);
}

.nav-register:hover {
    background: linear-gradient(135deg, rgba(74, 144, 226, 1) 0%, rgba(58, 123, 213, 1) 100%);
    box-shadow: 0 6px 14px rgba(74, 144, 226, 0.4);
    transform: translateY(-1px);
}

/* Hamburger menu for mobile - también con efecto glass */
.header-nav-toggle {
    display: none;
    font-size: 1.5rem;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 0.5rem;
    cursor: pointer;
    color: var(--color-text);
    padding: 0.5rem;
    transition: all 0.3s ease;
}

.header-nav-toggle:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: rgba(255, 255, 255, 0.3);
}

/* Responsive Design */
@media (max-width: 768px) {
    .header-bar {
        padding: 0 var(--spacing-sm);
        grid-template-columns: auto 1fr auto;
    }

    .header-logo {
        max-width: 150px;
        height: 35px;
    }

    .header-title {
        font-size: var(--font-size-md);
        text-align: center;
    }

    .header-nav {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 60px;
        left: 0;
        right: 0;
        width: 100%;
        background-color: var(--color-bg);
        padding: var(--spacing-sm);
        box-shadow: 0 4px 8px var(--color-shadow);
        gap: var(--spacing-xs);
    }

    .header-nav.active {
        display: flex;
    }

    .header-nav-toggle {
        display: block;
    }

    .header-nav .nav-link {
        width: 100%;
        text-align: center;
        padding: var(--spacing-sm);
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .header-bar {
        padding: 0 var(--spacing-xs);
    }

    .header-logo {
        max-width: 120px;
        height: 30px;
    }

    .header-title {
        font-size: var(--font-size-sm);
    }

    .header-nav .nav-link {
        font-size: var(--font-size-xs);
        padding: var(--spacing-xs) var(--spacing-sm);
    }
}