/* ========================================
   NAVIGATION BAR - PROFESSIONAL DESIGN
   ======================================== */

nav {
    background: linear-gradient(135deg, #0f2027 0%, #203a43 50%, #2c5364 100%);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    position: sticky;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(10px);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 70px;
}

/* Brand/Logo */
.nav-brand {
    flex-shrink: 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    color: var(--text-white);
    font-size: 1.5rem;
    font-weight: 800;
    transition: transform 0.3s ease;
}

.logo:hover {
    transform: scale(1.05);
}

.logo i {
    font-size: 2rem;
    color: var(--primary-blue);
    filter: drop-shadow(0 2px 8px rgba(30, 131, 238, 0.5));
}

.logo-text {
    background: linear-gradient(135deg, #ffffff 0%, #a8dadc 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.5px;
}

/* Mobile Toggle Button */
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 8px;
    z-index: 1001;
}

.nav-toggle span {
    width: 28px;
    height: 3px;
    background: var(--text-white);
    border-radius: 3px;
    transition: all 0.3s ease;
}

.nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(7px, 7px);
}

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

.nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

/* Navigation Menu */
.nav-menu {
    display: flex;
    align-items: center;
    gap: 3rem;
    flex: 1;
    justify-content: flex-end;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.nav-link {
    position: relative;
    color: rgba(255, 255, 255, 0.9);
    text-decoration: none;
    font-size: 1rem;
    font-weight: 600;
    padding: 0.6rem 1.2rem;
    border-radius: 8px;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    white-space: nowrap;
}

.nav-link i {
    font-size: 0.9rem;
    opacity: 0.9;
}

.nav-link::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: var(--primary-blue);
    transition: width 0.3s ease;
}

.nav-link:hover {
    color: var(--text-white);
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
}

.nav-link:hover::before {
    width: 80%;
}

.nav-link:active {
    transform: translateY(0);
}

/* Active Page Indicator */
.nav-link.active::before {
    width: 70%;
    height: 1px;
    background: var(--text-white);
    box-shadow: 0 0 8px rgba(255, 255, 255, 0.6);
}

.nav-link.active {
    color: var(--text-white);
}

/* Navigation Actions */
.nav-actions {
    display: flex;
    align-items: center;
}

.nav-logout-form {
    margin: 0;
}

.btn-nav-logout {
    background: rgba(220, 53, 69, 0.9);
    color: var(--text-white);
    border: 2px solid rgba(220, 53, 69, 0.5);
    padding: 0.65rem 1.5rem;
    border-radius: 5px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    white-space: nowrap;
}

.btn-nav-logout:hover {
    background: #dc3545;
    border-color: #dc3545;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(220, 53, 69, 0.4);
}

.btn-nav-logout:active {
    transform: translateY(0);
}

/* ========================================
   RESPONSIVE DESIGN
   ======================================== */

@media (max-width: 1024px) {
    .nav-links {
        gap: 0.25rem;
    }

    .nav-link {
        padding: 0.5rem 1rem;
        font-size: 0.95rem;
    }

    .nav-menu {
        gap: 2rem;
    }
}

@media (max-width: 768px) {
    .nav-container {
        padding: 0 1rem;
    }

    .nav-toggle {
        display: flex;
        transition: transform 0.3s ease;
    }

    .nav-toggle:active {
        transform: scale(0.9);
    }

    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: linear-gradient(135deg, #0f2027 0%, #1a2f3a 50%, #203a43 100%);
        backdrop-filter: blur(20px);
        flex-direction: column;
        justify-content: flex-start;
        padding: 2.5rem 1.5rem;
        gap: 1.5rem;
        transition: left 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
        overflow-y: auto;
        box-shadow: -5px 0 30px rgba(0, 0, 0, 0.5);
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-links {
        flex-direction: column;
        width: 100%;
        gap: 0.75rem;
        animation: fadeInUp 0.5s ease-out;
    }

    @keyframes fadeInUp {
        from {
            opacity: 0;
            transform: translateY(20px);
        }

        to {
            opacity: 1;
            transform: translateY(0);
        }
    }

    .nav-link {
        width: 100%;
        padding: 1.2rem 1.5rem;
        font-size: 1.15rem;
        font-weight: 600;
        justify-content: flex-start;
        border-radius: 5px;
        background: rgba(255, 255, 255, 0.03);
        border: 1px solid rgba(255, 255, 255, 0.08);
        position: relative;
        overflow: hidden;
        transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    }

    .nav-link::after {
        content: '';
        position: absolute;
        top: 0;
        left: -100%;
        width: 100%;
        height: 100%;
        background: linear-gradient(90deg, transparent, rgba(30, 131, 238, 0.15), transparent);
        transition: left 0.5s ease;
    }

    .nav-link:hover::after {
        left: 100%;
    }

    .nav-link:hover {
        background: rgba(30, 131, 238, 0.1);
        border-color: rgba(30, 131, 238, 0.3);
        transform: translateX(8px);
        box-shadow: 0 4px 15px rgba(30, 131, 238, 0.2);
    }

    .nav-link.active {
        background: rgba(30, 131, 238, 0.15);
        border-color: rgba(30, 131, 238, 0.4);
        box-shadow: 0 4px 15px rgba(30, 131, 238, 0.25);
    }

    .nav-link.active::before {
        content: '';
        position: absolute;
        left: 0;
        top: 0;
        bottom: 0;
        width: 4px;
        background: linear-gradient(180deg, #1e83ee 0%, #64b5f6 100%);
        box-shadow: 0 0 10px rgba(30, 131, 238, 0.6);
    }

    .nav-link i {
        font-size: 1.2rem;
        min-width: 24px;
        color: rgba(30, 131, 238, 0.9);
        filter: drop-shadow(0 2px 4px rgba(30, 131, 238, 0.3));
    }

    .nav-link:hover i {
        color: #64b5f6;
        transform: scale(1.1);
    }

    /* Divider between menu items */
    .nav-links::after {
        content: '';
        width: 100%;
        height: 1px;
        background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
        margin: 0.5rem 0;
    }

    .nav-actions {
        width: 100%;
        border-top: 1px solid rgba(255, 255, 255, 0.1);
        padding-top: 1.5rem;
        margin-top: auto;
    }

    .nav-logout-form {
        width: 100%;
    }

    .btn-nav-logout {
        width: 100%;
        justify-content: center;
        padding: 1.2rem 1.5rem;
        font-size: 1.15rem;
        border-radius: 5px;
        background: linear-gradient(135deg, rgba(220, 53, 69, 0.9) 0%, rgba(200, 35, 51, 0.9) 100%);
        transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    }

    .btn-nav-logout:hover {
        transform: translateY(-3px);
        box-shadow: 0 8px 25px rgba(220, 53, 69, 0.5);
    }

    .btn-nav-logout:active {
        transform: translateY(-1px);
    }

    .logo {
        font-size: 1.3rem;
    }

    .logo i {
        font-size: 1.6rem;
    }
}

@media (max-width: 480px) {
    .logo-text {
        display: none;
    }

    .nav-menu {
        padding: 1.5rem 1rem;
    }

    .nav-link {
        padding: 0.9rem 1.2rem;
    }
}