/* ========================================
   Modern Navigation Bar Styles
   ======================================== */

/* Header Container */
.modern-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1030;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.08);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.darkmode .modern-header {
    background: rgba(26, 26, 26, 0.95);
    border-bottom-color: rgba(255, 255, 255, 0.1);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.5);
}

/* Navbar */
.modern-header .navbar {
    padding: 0.75rem 0;
    background: transparent;
    transition: padding 0.3s ease;
}

.modern-header .navbar-brand {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: #1e293b;
    transition: all 0.3s ease;
    padding: 0.5rem 0;
}

.modern-header .navbar-brand:hover {
    opacity: 1;
    transform: translateY(-2px);
}

.darkmode .modern-header .navbar-brand {
    color: #fff;
}

.modern-header .navbar-brand i {
    font-size: 1.75rem;
    color: #667eea;
    transition: transform 0.3s ease;
}

.modern-header .navbar-brand:hover i {
    transform: rotate(-15deg) scale(1.1);
}

.darkmode .modern-header .navbar-brand i {
    color: #4a9eff;
}

.modern-header .navbar-brand span {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 800;
    letter-spacing: -0.5px;
}

.darkmode .modern-header .navbar-brand span {
    background: linear-gradient(135deg, #4a9eff 0%, #667eea 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Navigation Items */
.modern-header .navbar-nav {
    gap: 0.5rem;
}

.modern-header .nav-item {
    position: relative;
}

.modern-header .nav-item.dropdown {
    position: relative;
}

.modern-header .nav-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.625rem 1rem;
    border-radius: 10px;
    font-weight: 600;
    font-size: 0.95rem;
    color: #475569;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.modern-header .nav-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1) 0%, rgba(118, 75, 162, 0.1) 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
    border-radius: 10px;
}

.modern-header .nav-link:hover::before {
    opacity: 1;
}

.modern-header .nav-link:hover {
    color: #667eea;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.15);
}

.darkmode .modern-header .nav-link {
    color: #cbd5e1;
}

.darkmode .modern-header .nav-link:hover {
    color: #4a9eff;
    box-shadow: 0 4px 12px rgba(74, 158, 255, 0.2);
}

.modern-header .nav-link i {
    font-size: 1.1rem;
    transition: transform 0.3s ease;
}

.modern-header .nav-link:hover i {
    transform: scale(1.15);
}

/* Login/Logout Links */
.modern-header .login-link {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff !important;
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
}

.modern-header .login-link::before {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.2) 0%, rgba(255, 255, 255, 0.1) 100%);
}

.modern-header .login-link:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.4);
}

.darkmode .modern-header .login-link {
    background: linear-gradient(135deg, #4a9eff 0%, #667eea 100%);
    box-shadow: 0 4px 12px rgba(74, 158, 255, 0.3);
}

.darkmode .modern-header .login-link:hover {
    box-shadow: 0 6px 20px rgba(74, 158, 255, 0.5);
}

.modern-header .logout-link {
    padding: 0.625rem 0.875rem;
    color: #ef4444 !important;
}

.modern-header .logout-link:hover {
    background: rgba(239, 68, 68, 0.1);
    color: #dc2626 !important;
}

.darkmode .modern-header .logout-link:hover {
    background: rgba(239, 68, 68, 0.2);
}

/* Nav Divider */
.nav-divider {
    width: 1px;
    height: 30px;
    background: linear-gradient(to bottom, transparent, rgba(0, 0, 0, 0.1), transparent);
    margin: 0 0.75rem;
}

.darkmode .nav-divider {
    background: linear-gradient(to bottom, transparent, rgba(255, 255, 255, 0.15), transparent);
}

/* Admin Link */
.modern-header .nav-link-admin {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    color: #fff !important;
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.3);
}

.modern-header .nav-link-admin::before {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.2) 0%, rgba(255, 255, 255, 0.1) 100%);
}

.modern-header .nav-link-admin:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(16, 185, 129, 0.4);
}

.darkmode .modern-header .nav-link-admin {
    background: linear-gradient(135deg, #059669 0%, #047857 100%);
    box-shadow: 0 4px 12px rgba(5, 150, 105, 0.3);
}

/* User Menu Button */
.modern-header .nav-link-user {
    background: transparent;
    border: 2px solid #e2e8f0;
    color: #475569 !important;
    padding: 0.625rem 1rem;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.modern-header .nav-link-user:hover {
    border-color: #667eea;
    background: rgba(102, 126, 234, 0.05);
    color: #667eea !important;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.15);
}

.darkmode .modern-header .nav-link-user {
    border-color: #4a5568;
    color: #cbd5e1 !important;
}

.darkmode .modern-header .nav-link-user:hover {
    border-color: #4a9eff;
    background: rgba(74, 158, 255, 0.1);
    color: #4a9eff !important;
    box-shadow: 0 4px 12px rgba(74, 158, 255, 0.2);
}

.modern-header .nav-link-user .user-name {
    font-weight: 600;
    max-width: 120px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.modern-header .nav-link-user i.bi-chevron-down {
    font-size: 0.85rem;
    transition: transform 0.3s ease;
}

.modern-header .nav-link-user i.bi-chevron-down.rotate-180 {
    transform: rotate(180deg);
}

/* Dropdown Menu */
.modern-header .dropdown-menu {
    border: 2px solid #e2e8f0;
    border-radius: 12px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
    padding: 0.5rem;
    margin-top: 0.5rem;
    min-width: 200px;
    animation: slideDown 0.3s ease;
    position: absolute;
    right: 0;
    left: auto;
    transform-origin: top right;
}

.darkmode .modern-header .dropdown-menu {
    background: #2d3748;
    border-color: #4a5568;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.5);
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }

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

.modern-header .dropdown-item {
    border-radius: 8px;
    padding: 0.625rem 1rem;
    font-weight: 500;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: #475569;
}

.modern-header .dropdown-item:hover {
    background: rgba(102, 126, 234, 0.1);
    color: #667eea;
    transform: translateX(4px);
}

.darkmode .modern-header .dropdown-item {
    color: #cbd5e1;
}

.darkmode .modern-header .dropdown-item:hover {
    background: rgba(74, 158, 255, 0.15);
    color: #4a9eff;
}

.modern-header .dropdown-item.text-danger {
    color: #ef4444 !important;
}

.modern-header .dropdown-item.text-danger:hover {
    background: rgba(239, 68, 68, 0.1);
    color: #dc2626 !important;
}

.darkmode .modern-header .dropdown-item.text-danger:hover {
    background: rgba(239, 68, 68, 0.2);
}

.modern-header .dropdown-divider {
    margin: 0.5rem 0;
    border-color: #e2e8f0;
}

.darkmode .modern-header .dropdown-divider {
    border-color: #4a5568;
}

/* Theme Toggle Button */
.theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    border-radius: 50%;
    border: 2px solid #e2e8f0;
    background: #fff;
    color: #475569;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    margin-right: 0.5rem;
    position: relative;
    overflow: hidden;
}

.theme-toggle::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    transform: translate(-50%, -50%);
    transition: all 0.4s ease;
    z-index: 0;
}

.theme-toggle:hover::before {
    width: 100%;
    height: 100%;
}

.theme-toggle i {
    font-size: 1.2rem;
    transition: all 0.3s ease;
    position: relative;
    z-index: 1;
}

.theme-toggle:hover {
    border-color: #667eea;
    transform: rotate(180deg) scale(1.05);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.25);
}

.theme-toggle:hover i {
    color: #fff;
}

.darkmode .theme-toggle {
    background: #2d3748;
    border-color: #4a5568;
    color: #f59e0b;
}

.darkmode .theme-toggle::before {
    background: linear-gradient(135deg, #4a9eff 0%, #667eea 100%);
}

.darkmode .theme-toggle:hover {
    border-color: #4a9eff;
    box-shadow: 0 4px 12px rgba(74, 158, 255, 0.3);
}

/* Responsive Design */
@media (max-width: 991px) {
    .modern-header .navbar-nav {
        gap: 0.25rem;
    }

    .modern-header .nav-link {
        padding: 0.5rem 0.75rem;
        font-size: 0.9rem;
    }

    .modern-header .nav-link span {
        display: none;
    }

    .modern-header .nav-link i {
        font-size: 1.25rem;
    }

    .modern-header .navbar-brand {
        font-size: 1.35rem;
    }

    .theme-toggle {
        width: 38px;
        height: 38px;
        margin-right: 0.25rem;
    }

    .theme-toggle i {
        font-size: 1.1rem;
    }

    /* Hide divider on tablet */
    .nav-divider {
        display: none;
    }

    /* User menu adjustments */
    .modern-header .nav-link-user .user-name {
        display: none;
    }

    .modern-header .nav-link-user {
        padding: 0.5rem 0.75rem;
    }

    .modern-header .nav-link-user i.bi-chevron-down {
        display: none;
    }

    /* Dropdown positioning */
    .modern-header .dropdown-menu {
        min-width: 180px;
    }
}

@media (max-width: 576px) {
    .modern-header .navbar {
        padding: 0.5rem 0;
    }

    .modern-header .navbar-brand {
        font-size: 1.25rem;
    }

    .modern-header .navbar-brand i {
        font-size: 1.5rem;
    }

    .modern-header .nav-link {
        padding: 0.5rem;
    }

    .theme-toggle {
        width: 36px;
        height: 36px;
    }

    /* Dropdown adjustments for mobile */
    .modern-header .dropdown-menu {
        min-width: 160px;
        max-width: calc(100vw - 2rem);
        right: 0.5rem;
        left: auto;
        margin-top: 0.5rem;
        font-size: 0.9rem;
    }

    .modern-header .dropdown-item {
        padding: 0.5rem 0.875rem;
        font-size: 0.9rem;
    }

    /* Ensure dropdown doesn't overflow */
    .modern-header .nav-item.dropdown {
        position: relative;
    }
}

/* Scroll Effect */
.modern-header.scrolled {
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.12);
}

.darkmode .modern-header.scrolled {
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.7);
}

/* Animation for nav items on load */
@keyframes slideInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }

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

.modern-header .nav-item {
    animation: slideInDown 0.5s ease-out backwards;
}

.modern-header .nav-item:nth-child(1) {
    animation-delay: 0.1s;
}

.modern-header .nav-item:nth-child(2) {
    animation-delay: 0.2s;
}

.modern-header .nav-item:nth-child(3) {
    animation-delay: 0.3s;
}

.modern-header .nav-item:nth-child(4) {
    animation-delay: 0.4s;
}

/* Notification Badge (if needed in future) */
.nav-link .badge {
    position: absolute;
    top: 0;
    right: 0;
    transform: translate(25%, -25%);
    padding: 0.25rem 0.4rem;
    font-size: 0.7rem;
    border-radius: 10px;
    background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
    color: #fff;
    font-weight: 700;
    box-shadow: 0 2px 8px rgba(239, 68, 68, 0.4);
}