/* Root Variables */
:root {
    --primary-color: #0d6efd;
    --secondary-color: #6c757d;
    --success-color: #198754;
    --info-color: #0dcaf0;
    --warning-color: #ffc107;
    --danger-color: #dc3545;
    --light-color: #f8f9fa;
    --dark-color: #212529;
    --navbar-height: 70px;
    --transition-speed: 0.3s;
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 15px rgba(0,0,0,0.1);
}

/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--dark-color);
}

/* ========================================
   NAVBAR STYLES
   ======================================== */

.navbar {
    background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%) !important;
    box-shadow: var(--shadow-md);
    padding: 0.5rem 0;
    position: sticky;
    top: 0;
    z-index: 1030;
    transition: all var(--transition-speed) ease;
}

    .navbar::before {
        content: '';
        position: absolute;
        bottom: 0;
        left: 0;
        right: 0;
        height: 3px;
        background: linear-gradient(90deg, var(--primary-color), var(--info-color), var(--success-color));
        transform: scaleX(0);
        transform-origin: left;
        animation: slideIn 1s ease forwards;
    }

@keyframes slideIn {
    to {
        transform: scaleX(1);
    }
}

.navbar.scrolled {
    box-shadow: var(--shadow-lg);
    padding: 0.25rem 0;
}

/* Navbar Brand */
.navbar-brand {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color) !important;
    padding: 0.5rem 1rem;
    position: relative;
    transition: all var(--transition-speed) ease;
    overflow: hidden;
}

    .navbar-brand::before {
        content: '';
        position: absolute;
        bottom: 0;
        left: 0;
        width: 100%;
        height: 3px;
        background: linear-gradient(90deg, var(--primary-color), var(--info-color));
        transform: translateX(-100%);
        transition: transform var(--transition-speed) ease;
    }

    .navbar-brand:hover {
        transform: translateY(-2px);
        color: var(--info-color) !important;
    }

        .navbar-brand:hover::before {
            transform: translateX(0);
        }

    .navbar-brand:active {
        transform: translateY(0);
    }

    .navbar-brand i {
        animation: bounce 2s infinite;
    }

@keyframes bounce {
    0%, 100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-5px);
    }
}

/* Nav Links */
.nav-link {
    position: relative;
    font-weight: 500;
    padding: 0.5rem 1rem !important;
    margin: 0 0.25rem;
    border-radius: 8px;
    transition: all var(--transition-speed) ease;
    color: var(--dark-color) !important;
    overflow: hidden;
}

    .nav-link::before {
        content: '';
        position: absolute;
        top: 0;
        left: -100%;
        width: 100%;
        height: 100%;
        background: linear-gradient(90deg, transparent, rgba(13, 110, 253, 0.1), transparent);
        transition: left 0.5s ease;
    }

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

    .nav-link::after {
        left: 30%;
        width: 0;
        height: 2px;
        transform: translateX(-50%);
        transition: width var(--transition-speed) ease;
    }

    .nav-link:hover {
        background-color: rgba(13, 110, 253, 0.08);
        transform: translateY(-2px);
        color: var(--primary-color) !important;
    }

    .nav-link:active {
        transform: translateY(0);
        background-color: rgba(13, 110, 253, 0.15);
    }

    .nav-link i {
        transition: transform var(--transition-speed) ease;
    }

    .nav-link:hover i {
        transform: scale(1.2) rotate(5deg);
    }

/* Dropdown Toggle */
.dropdown-toggle::after {
    transition: transform var(--transition-speed) ease;
}

.dropdown-toggle:hover::after {
    transform: rotate(180deg);
}

.dropdown:hover .dropdown-toggle::after {
    transform: rotate(180deg);
}

/* Dropdown Menu */
.dropdown-menu {
    border: none;
    box-shadow: var(--shadow-lg);
    border-radius: 12px;
    padding: 0.5rem;
    margin-top: 0.5rem;
    background: white;
    animation: fadeInDown 0.3s ease;
    overflow: hidden;
}

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

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

.dropdown-menu::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), var(--info-color));
}

/* Dropdown Items */
.dropdown-item {
    border-radius: 8px;
    padding: 0.6rem 1rem;
    margin: 0.2rem 0;
    transition: all var(--transition-speed) ease;
    position: relative;
    overflow: hidden;
}

    .dropdown-item::before {
        content: '';
        position: absolute;
        left: 0;
        top: 0;
        height: 100%;
        width: 3px;
        background: var(--primary-color);
        transform: scaleY(0);
        transition: transform var(--transition-speed) ease;
    }

    .dropdown-item:hover {
        background: linear-gradient(90deg, rgba(13, 110, 253, 0.1), transparent);
        transform: translateX(5px);
        color: var(--primary-color);
    }

        .dropdown-item:hover::before {
            transform: scaleY(1);
        }

    .dropdown-item:active {
        background: rgba(13, 110, 253, 0.2);
        transform: translateX(3px);
    }

    .dropdown-item i {
        transition: all var(--transition-speed) ease;
        width: 20px;
    }

    .dropdown-item:hover i {
        transform: scale(1.2);
        color: var(--primary-color);
    }

.dropdown-divider {
    margin: 0.5rem 0;
    border-top: 1px solid rgba(0, 0, 0, 0.08);
}

/* User Welcome Badge */
.user-welcome {
    display: inline-flex;
    align-items: center;
    padding: 0.5rem 1rem;
    background: linear-gradient(135deg, rgba(13, 110, 253, 0.1), rgba(13, 202, 240, 0.1));
    border-radius: 25px;
    margin: 0 0.5rem;
    font-weight: 500;
    transition: all var(--transition-speed) ease;
    position: relative;
    overflow: hidden;
}

    .user-welcome::before {
        content: '';
        position: absolute;
        top: -50%;
        left: -50%;
        width: 200%;
        height: 200%;
        background: radial-gradient(circle, rgba(255,255,255,0.3) 0%, transparent 70%);
        transform: scale(0);
        transition: transform 0.6s ease;
    }

    .user-welcome:hover::before {
        transform: scale(1);
    }

    .user-welcome i {
        font-size: 1.2rem;
        animation: pulse 2s infinite;
    }

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }

    50% {
        opacity: 0.7;
    }
}

/* Role Badge */
.role-badge {
    margin-left: 0.5rem;
    padding: 0.25rem 0.75rem;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    position: relative;
    overflow: hidden;
    transition: all var(--transition-speed) ease;
}

    .role-badge::before {
        content: '';
        position: absolute;
        top: 0;
        left: -100%;
        width: 100%;
        height: 100%;
        background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
        transition: left 0.5s ease;
    }

    .role-badge:hover::before {
        left: 100%;
    }

/* Navbar Toggler */
.navbar-toggler {
    border: 2px solid var(--primary-color);
    border-radius: 8px;
    padding: 0.5rem;
    transition: all var(--transition-speed) ease;
    position: relative;
    overflow: hidden;
}

    .navbar-toggler::before {
        content: '';
        position: absolute;
        top: 50%;
        left: 50%;
        width: 0;
        height: 0;
        border-radius: 50%;
        background: rgba(13, 110, 253, 0.2);
        transform: translate(-50%, -50%);
        transition: width 0.3s ease, height 0.3s ease;
    }

    .navbar-toggler:hover::before {
        width: 100%;
        height: 100%;
    }

    .navbar-toggler:hover {
        background-color: var(--primary-color);
        transform: rotate(90deg);
    }

        .navbar-toggler:hover .navbar-toggler-icon {
            filter: brightness(0) invert(1);
        }

    .navbar-toggler:focus {
        box-shadow: 0 0 0 0.25rem rgba(13, 110, 253, 0.25);
    }

    .navbar-toggler:active {
        transform: rotate(90deg) scale(0.95);
    }

.navbar-toggler-icon {
    transition: all var(--transition-speed) ease;
}

/* Button Styles */
.btn-outline-primary {
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
    font-weight: 600;
    padding: 0.5rem 1.5rem;
    border-radius: 25px;
    transition: all var(--transition-speed) ease;
    position: relative;
    overflow: hidden;
    z-index: 1;
}

    .btn-outline-primary::before {
        content: '';
        position: absolute;
        top: 0;
        left: -100%;
        width: 100%;
        height: 100%;
        background: var(--primary-color);
        transition: left var(--transition-speed) ease;
        z-index: -1;
    }

    .btn-outline-primary:hover {
        color: white;
        border-color: var(--primary-color);
        transform: translateY(-2px);
        box-shadow: 0 5px 15px rgba(13, 110, 253, 0.3);
    }

        .btn-outline-primary:hover::before {
            left: 0;
        }

    .btn-outline-primary:active {
        transform: translateY(0);
        box-shadow: 0 2px 5px rgba(13, 110, 253, 0.3);
    }

/* Logout Button */
.dropdown-item button {
    width: 100%;
    text-align: left;
    cursor: pointer;
}

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

/* Large Devices (desktops, 992px and up) */
@media (min-width: 992px) {
    .navbar-expand-lg .navbar-nav .dropdown-menu {
        min-width: 250px;
    }
}

/* Medium Devices (tablets, 768px to 991px) */
@media (max-width: 991px) {
    .navbar-brand {
        font-size: 1.25rem;
    }

    .navbar-collapse {
        background: white;
        margin-top: 1rem;
        padding: 1rem;
        border-radius: 12px;
        box-shadow: var(--shadow-md);
        animation: fadeIn 0.3s ease;
    }

    @keyframes fadeIn {
        from {
            opacity: 0;
        }

        to {
            opacity: 1;
        }
    }

    .nav-link {
        margin: 0.25rem 0;
    }

    .dropdown-menu {
        border-left: 3px solid var(--primary-color);
        margin-left: 1rem;
        box-shadow: none;
    }

    .user-welcome {
        display: flex;
        width: 100%;
        justify-content: space-between;
        margin: 0.5rem 0;
    }

    .btn-outline-primary {
        width: 100%;
        margin-top: 0.5rem;
    }
}

/* Small Devices (phones, 576px to 767px) */
@media (max-width: 767px) {
    .navbar-brand {
        font-size: 1.1rem;
    }

        .navbar-brand i {
            font-size: 1.2rem;
        }

    .nav-link {
        padding: 0.75rem 1rem !important;
    }

    .dropdown-menu {
        margin-left: 0.5rem;
    }

    .dropdown-item {
        padding: 0.5rem 0.75rem;
        font-size: 0.9rem;
    }

    .role-badge {
        font-size: 0.7rem;
    }
}

/* Extra Small Devices (phones, less than 576px) */
@media (max-width: 575px) {
    .navbar {
        padding: 0.25rem 0;
    }

    .navbar-brand {
        font-size: 1rem;
        padding: 0.5rem;
    }

    .container-fluid {
        padding: 0 0.5rem;
    }

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

    .role-badge {
        font-size: 0.65rem;
        padding: 0.2rem 0.5rem;
    }
}

/* Landscape Orientation */
@media (max-height: 500px) and (orientation: landscape) {
    .navbar {
        position: relative;
    }

    .navbar-collapse {
        max-height: 300px;
        overflow-y: auto;
    }
}


/* Print Styles */
@media print {
    .navbar {
        box-shadow: none;
        border-bottom: 1px solid #000;
    }

    .dropdown-menu,
    .navbar-toggler,
    .btn-outline-primary {
        display: none;
    }
}

/* Accessibility Enhancements */
.nav-link:focus,
.dropdown-item:focus,
.btn-outline-primary:focus,
.navbar-toggler:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
    .navbar {
        border-bottom: 3px solid var(--dark-color);
    }

    .nav-link:hover {
        background-color: var(--primary-color);
        color: white !important;
    }
}

/* Smooth Scrolling */
html {
    scroll-behavior: smooth;
}

/* Box Shadow on Scroll - Add this class via JavaScript */
.navbar.scrolled {
    box-shadow: var(--shadow-lg);
}

/* Additional Utility Classes */
.box-shadow {
    box-shadow: var(--shadow-sm);
}

.border-bottom {
    border-bottom: 1px solid rgba(0, 0, 0, 0.1) !important;
}