/* ============================================
   HEADER Y NAVEGACIÓN
   ============================================ */

:root {
    --header-height: 108px; /* logo 100px + padding vertical */
}

.header {
    background-color: var(--white);
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
}

.navbar {
    display: flex;
    align-items: center;
    min-height: 70px;
    position: relative;
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
}

/* ============================================
   LOGO
   ============================================ */
.navbar-brand {
    flex-shrink: 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    text-decoration: none;
    color: var(--primary-color);
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    transition: color var(--transition-base);
}

.logo:hover {
    color: var(--accent-color);
}

.logo-img {
    height: 100px;
    width: auto;
    object-fit: contain;
    display: block;
    flex-shrink: 0;
}

.logo-text {
    letter-spacing: -0.5px;
}

/* ============================================
   MENÚ DE NAVEGACIÓN
   ============================================ */
.navbar-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-2xl);
    align-items: center;
}

.navbar-menu a {
    display: block;
    padding: var(--spacing-md) 0;
    color: var(--dark-gray);
    font-weight: var(--font-weight-semibold);
    font-size: var(--font-size-base);
    transition: color var(--transition-base), border-bottom var(--transition-base);
    border-bottom: 3px solid transparent;
}

.navbar-menu a:hover,
.navbar-menu a:focus-visible {
    color: var(--accent-color);
    border-bottom-color: var(--accent-color);
}

/* ============================================
   CTA NAVBAR — botón "Reservar cita"
   ============================================ */
.navbar-cta {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background-color: #FF9900;
    color: #111;
    font-size: 0.88rem;
    font-weight: 700;
    letter-spacing: 0.3px;
    padding: 9px 18px;
    border-radius: 4px;
    text-decoration: none;
    white-space: nowrap;
    flex-shrink: 0;
    transition: background-color 0.2s ease, transform 0.2s ease;
    margin-left: var(--spacing-lg);
}

.navbar-cta i {
    font-size: 0.85em;
}

.navbar-cta:hover {
    background-color: #e68a00;
    transform: translateY(-1px);
    color: #111;
    text-decoration: none;
}

/* ============================================
   TOGGLE BUTTON (MOBILE)
   ============================================ */
.navbar-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-sm);
    z-index: 101;
}

.navbar-toggle span {
    width: 25px;
    height: 3px;
    background-color: var(--primary-color);
    border-radius: 2px;
    transition: all var(--transition-base);
}

.navbar-toggle.active span:nth-child(1) {
    transform: translateY(9px) rotate(45deg);
}

.navbar-toggle.active span:nth-child(2) {
    opacity: 0;
}

.navbar-toggle.active span:nth-child(3) {
    transform: translateY(-9px) rotate(-45deg);
}

/* ============================================
   RESPONSIVE HEADER
   ============================================ */
@media (max-width: 768px) {
    :root {
        --header-height: 60px;
    }

    .logo-img {
        height: 52px;
    }

    .navbar {
        min-height: var(--header-height);
    }

    .navbar-toggle {
        display: flex;
    }

    /* CTA oculto en móvil — el hero ya tiene su propio botón de reserva */
    .navbar-cta {
        display: none;
    }

    /* Menú fixed: independiente del sticky, siempre anclado al viewport */
    .navbar-menu {
        position: fixed;
        top: var(--header-height);
        left: 0;
        right: 0;
        background-color: var(--white);
        flex-direction: column;
        gap: 0;
        max-height: 0;
        overflow: hidden;
        transition: max-height var(--transition-base);
        box-shadow: var(--shadow-md);
        list-style: none;
        z-index: 999;
    }

    .navbar-menu.active {
        max-height: 400px;
    }

    .navbar-menu li {
        width: 100%;
        border-bottom: 1px solid var(--light-gray);
    }

    .navbar-menu a {
        padding: var(--spacing-lg);
        font-size: 1rem;
        display: block;
        border-bottom: none;
        border-left: 4px solid transparent;
        margin: 0;
    }

    .navbar-menu a:hover,
    .navbar-menu a:focus-visible {
        background-color: var(--light-gray);
        border-left-color: var(--accent-color);
    }

    .logo-text {
        font-size: var(--font-size-lg);
    }
}

/* Pantallas muy pequeñas */
@media (max-width: 380px) {
    .logo-img {
        height: 40px;
    }

    .logo-text {
        font-size: 0.95rem;
    }

    .navbar-toggle {
        padding: 4px;
    }
}