/* ================================================================
   MENTORIA-NAV.CSS — Navegação lateral premium para Mentoria2
================================================================ */

body {
    padding-left: 260px;
    min-height: 100vh;
    transition: padding-left 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

#nav {
    width: 260px;
    background: linear-gradient(180deg, #0f172a 0%, #1e293b 100%);
    box-shadow: 4px 0 24px rgba(0,0,0,0.15);
    color: #fff;
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    overflow-y: auto;
    overflow-x: hidden;
    padding: 0;
    font-family: 'Inter', 'Source Sans Pro', sans-serif;
    transition: width 0.4s cubic-bezier(0.16, 1, 0.3, 1), transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    z-index: 1000;
}

#nav::-webkit-scrollbar {
    width: 6px;
}
#nav::-webkit-scrollbar-thumb {
    background: rgba(255,255,255,0.1);
    border-radius: 6px;
}

#nav .nav-header {
    padding: 28px 20px 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

#nav .nav-logo {
    display: block;
    height: 38px;
    width: auto;
    margin: 0 auto 12px;
    transition: height 0.3s;
}

#nav .nav-header strong {
    display: block;
    font-size: 1.1rem;
    font-weight: 700;
    color: #fff;
    letter-spacing: 0.5px;
    margin-bottom: 4px;
}

#nav .nav-header span {
    font-size: 0.75rem;
    color: #94a3b8;
    background: rgba(255,255,255,0.08);
    padding: 3px 10px;
    border-radius: 12px;
}

.nav-category {
    padding: 24px 20px 8px;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: #64748b;
}

#nav a {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 12px 20px;
    margin: 6px 12px;
    border-radius: 12px;
    font-size: 0.95rem;
    font-weight: 500;
    color: #cbd5e1;
    text-decoration: none;
    transition: all 0.25s ease;
    position: relative;
    overflow: hidden;
}

#nav a:hover {
    background: rgba(255, 255, 255, 0.08);
    color: #fff;
    transform: translateX(4px);
}

#nav a.active {
    background: #E25E42;
    color: #ffffff;
    font-weight: 600;
    box-shadow: 0 4px 12px rgba(226, 94, 66, 0.35);
}

#nav a i {
    font-size: 1.15rem;
    width: 24px;
    text-align: center;
    transition: transform 0.25s;
    color: inherit;
    opacity: 0.8;
}

#nav a.active i {
    opacity: 1;
}

#nav a:hover i {
    transform: scale(1.15);
}

#nav a .nav-label {
    flex: 1;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

#nav .nav-bottom {
    margin-top: auto;
    padding: 20px 16px;
    border-top: 1px solid rgba(255,255,255,0.06);
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-top: 30px;
}

#nav .nav-bottom button {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 12px;
    background: rgba(255,255,255,0.05);
    color: #cbd5e1;
    border: 1px solid rgba(255,255,255,0.05);
    border-radius: 8px;
    cursor: pointer;
    font-family: 'Inter', sans-serif;
    font-size: 0.85rem;
    font-weight: 500;
    transition: all 0.2s ease;
}

#nav .nav-bottom button:hover {
    background: rgba(255,255,255,0.12);
    color: #fff;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

#nav-toggle {
    position: fixed;
    top: 24px;
    left: 246px;
    width: 30px;
    height: 30px;
    background: #E25E42;
    border: none;
    border-radius: 50%;
    color: #fff;
    cursor: pointer;
    z-index: 1005;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    box-shadow: 0 4px 12px rgba(226, 94, 66, 0.35);
}

#nav-toggle:hover {
    transform: scale(1.1);
    background: #c94e32;
}

#nav-toggle svg {
    transition: transform 0.4s;
    width: 12px;
    height: 12px;
}

/* ================================================================
   ESTADO RECOLHIDO
================================================================ */
@media screen and (min-width: 769px) {
    body.nav-collapsed {
        padding-left: 80px;
    }

    body.nav-collapsed #nav {
        width: 80px;
    }

    body.nav-collapsed #nav-toggle {
        left: 65px;
    }

    body.nav-collapsed #nav-toggle svg {
        transform: rotate(180deg);
    }

    body.nav-collapsed #nav .nav-header {
        padding: 24px 10px 16px;
    }

    body.nav-collapsed #nav .nav-header strong,
    body.nav-collapsed #nav .nav-header span,
    body.nav-collapsed .nav-category {
        opacity: 0;
        pointer-events: none;
        height: 0;
        padding-top: 0;
        padding-bottom: 0;
        margin: 0;
        overflow: hidden;
    }

    body.nav-collapsed #nav .nav-logo {
        height: 28px;
        margin-bottom: 0;
    }

    body.nav-collapsed #nav a {
        justify-content: center;
        padding: 14px 0;
        margin: 6px 12px;
    }

    body.nav-collapsed #nav a:hover {
        transform: none;
        background: rgba(255, 255, 255, 0.1);
    }

    body.nav-collapsed #nav a span.nav-label {
        display: none;
    }

    body.nav-collapsed #nav a i {
        margin: 0;
        font-size: 1.3rem;
    }

    body.nav-collapsed #nav .nav-bottom {
        padding: 20px 10px;
    }

    body.nav-collapsed #nav .nav-bottom button span.btn-label {
        display: none;
    }

    body.nav-collapsed #nav .nav-bottom button {
        padding: 12px 0;
    }

    body.nav-collapsed #nav .nav-bottom button svg {
        margin: 0;
    }
}

/* ================================================================
   MOBILE
================================================================ */
#nav-mobile-btn {
    display: none;
    position: fixed;
    top: 16px;
    left: 16px;
    z-index: 1002;
    width: 44px;
    height: 44px;
    background: #1e293b;
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 12px;
    cursor: pointer;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 5px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
    transition: background 0.2s;
}

#nav-mobile-btn:hover {
    background: #2a3b52;
}

#nav-mobile-btn span {
    display: block;
    width: 20px;
    height: 2px;
    background: #fff;
    border-radius: 2px;
    transition: all 0.3s ease;
}

.nav-overlay {
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.6);
    backdrop-filter: blur(5px);
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transition: all 0.4s ease;
}

@media screen and (max-width: 768px) {
    #nav {
        transform: translateX(-260px);
        width: 260px;
    }

    #nav .nav-header {
        padding-top: 70px; /* Evita que a logo fique atrás do botão de fechar */
    }

    #nav-toggle {
        display: none;
    }

    #nav-mobile-btn {
        display: flex;
    }

    body {
        padding-left: 0;
    }

    body.nav-mobile-open #nav {
        transform: translateX(0);
    }

    body.nav-mobile-open .nav-overlay {
        opacity: 1;
        visibility: visible;
    }

    body.nav-mobile-open #nav-mobile-btn span:nth-child(1) {
        transform: translateY(7px) rotate(45deg);
    }
    body.nav-mobile-open #nav-mobile-btn span:nth-child(2) {
        opacity: 0;
    }
    body.nav-mobile-open #nav-mobile-btn span:nth-child(3) {
        transform: translateY(-7px) rotate(-45deg);
    }
}