/* Navigation Styles - Green Theme */
:root {
    --primary-green: #28a745;
    --dark-green: #1e7e34;
    --light-green: #d4edda;
    --accent-green: #20c997;
    --sidebar-width: 280px;
    --transition-speed: 0.3s;
}

/* Smooth scrolling for the entire page */
html {
    scroll-behavior: smooth;
}

body {
    padding-top: 0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

/* Top Navigation Styles */
.navbar {
    background: linear-gradient(135deg, var(--primary-green), var(--dark-green));
    box-shadow: 0 2px 10px rgba(40, 167, 69, 0.3);
    transition: all var(--transition-speed) ease;
    position: sticky;
    top: 0;
    z-index: 1040;
}

.navbar-brand {
    display: flex;
    align-items: center;
    font-weight: 700;
    color: white !important;
    text-decoration: none;
    transition: transform var(--transition-speed) ease;
}

.navbar-brand:hover {
    transform: scale(1.05);
    color: var(--light-green) !important;
}

.navbar-logo {
    height: 40px;
    width: 40px;
    border-radius: 50%;
    margin-right: 10px;
    border: 2px solid white;
    transition: border-color var(--transition-speed) ease;
}

.brand-text {
    font-size: 1.5rem;
    font-weight: 600;
}

/* Desktop Navigation Links */
.navbar-nav .nav-link {
    color: rgba(255, 255, 255, 0.9) !important;
    font-weight: 500;
    padding: 0.5rem 1rem !important;
    margin: 0 0.2rem;
    border-radius: 25px;
    transition: all var(--transition-speed) ease;
    position: relative;
    overflow: hidden;
}

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

.navbar-nav .nav-link.active {
    color: white !important;
    background-color: var(--dark-green);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

/* Mobile toggle button */
.navbar-toggler {
    border: none;
    padding: 0.5rem;
    background-color: var(--dark-green);
    border-radius: 8px;
    transition: all var(--transition-speed) ease;
}

.navbar-toggler:hover {
    background-color: var(--accent-green);
    transform: scale(1.1);
}

.navbar-toggler:focus {
    box-shadow: 0 0 0 0.2rem rgba(40, 167, 69, 0.5);
}

/* Sidebar Styles */
.sidebar {
    position: fixed;
    top: 0;
    left: -100%;
    width: var(--sidebar-width);
    height: 100vh;
    background: linear-gradient(180deg, var(--primary-green), var(--dark-green));
    z-index: 1050;
    transition: left var(--transition-speed) cubic-bezier(0.25, 0.46, 0.45, 0.94);
    box-shadow: 3px 0 15px rgba(0, 0, 0, 0.2);
    overflow-y: auto;
}

.sidebar.active {
    left: 0;
}

.sidebar-header {
    padding: 1rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    justify-content: flex-end;
}

.close-btn {
    background: transparent;
    border: 2px solid white;
    color: white;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-speed) ease;
}

.close-btn:hover {
    background-color: rgba(255, 255, 255, 0.1);
    transform: rotate(90deg) scale(1.1);
    color: white;
}

.sidebar-content {
    padding: 1rem 0;
}

.sidebar .nav-item {
    margin: 0.5rem 0;
}

.sidebar .nav-link {
    color: rgba(255, 255, 255, 0.9) !important;
    padding: 1rem 1.5rem;
    border-radius: 0;
    border-left: 4px solid transparent;
    transition: all var(--transition-speed) ease;
    position: relative;
    display: flex;
    align-items: center;
    font-weight: 500;
}

.sidebar .nav-link:hover {
    background-color: rgba(255, 255, 255, 0.1);
    border-left-color: var(--accent-green);
    color: white !important;
    padding-left: 2rem;
}

.sidebar .nav-link.active {
    background-color: var(--dark-green);
    border-left-color: white;
    color: white !important;
    box-shadow: inset 0 0 10px rgba(0, 0, 0, 0.2);
}

/* Sidebar overlay */
.sidebar-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 1045;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-speed) ease;
}

.sidebar-overlay.active {
    opacity: 1;
    visibility: visible;
}

/* Main content wrapper */
.main-content {
    transition: margin-left var(--transition-speed) ease;
    min-height: 100vh;
}

/* Loading animation for sidebar */
@keyframes slideIn {
    from {
        transform: translateX(-100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

.sidebar.active .sidebar-content {
    animation: slideIn 0.4s ease-out;
}

/* Auto-close indicator */
.sidebar-timer {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    background-color: rgba(255, 255, 255, 0.2);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    color: white;
    font-size: 0.8rem;
    opacity: 0;
    transition: opacity var(--transition-speed) ease;
}

.sidebar-timer.active {
    opacity: 1;
}

/* Responsive Design */
@media (max-width: 991.98px) {
    .navbar-collapse {
        display: none !important;
    }
    
    .sidebar {
        width: min(var(--sidebar-width), 85vw);
    }
}

@media (min-width: 992px) {
    .sidebar {
        display: none;
    }
    
    #sidebarToggle {
        display: none;
    }
}

/* Enhanced scroll behavior */
@media (prefers-reduced-motion: no-preference) {
    .navbar,
    .sidebar,
    .nav-link,
    .navbar-brand {
        transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
    }
}

/* Focus states for accessibility */
.nav-link:focus,
.navbar-toggler:focus,
.close-btn:focus {
    outline: 2px solid var(--accent-green);
    outline-offset: 2px;
}

/* Active page highlighting */
.nav-link.active::before {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 100%;
    height: 3px;
    background-color: var(--accent-green);
    transform: scaleX(0);
    transition: transform var(--transition-speed) ease;
}

.navbar-nav .nav-link.active::before {
    transform: scaleX(1);
}