/* CSS Variables */
:root {
    --primary: #5e5bff;
    --primary-dark: #4a47e0;
    --primary-light: #e9e8ff;
    --secondary: #10b981;
    --accent: #3b82f6;
    --dark: #1e1b4b;
    --darker: #0f172a;
    --light: #f8fafc;
    --gray: #64748b;
    --light-gray: #f1f5f9;
    --gradient-primary: linear-gradient(135deg, #5e5bff 0%, #8b5cf6 100%);
    --gradient-secondary: linear-gradient(135deg, #10b981 0%, #34d399 100%);
    --gradient-accent: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%);
    --gradient-top-nav: linear-gradient(135deg, #6a11cb 0%, #2575fc 100%);
    --gradient-dark: linear-gradient(135deg, #1e1b4b 0%, #312e81 100%);
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 50px rgba(0, 0, 0, 0.15);
    --border-radius: 12px;
    --border-radius-lg: 20px;
}

/* Base Styles */
body {
    font-family: 'Manrope', sans-serif;
    color: var(--dark);
    line-height: 1.7;
    background-color: var(--light);
    padding-top: 40px;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-weight: 700;
    line-height: 1.3;
}

/* Top Navigation */
.topnav {
    background: var(--gradient-top-nav);
    color: white;
    font-size: 14px;
    padding: 8px 0;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1030;
    box-shadow: 0 2px 10px rgba(106, 17, 203, 0.3);
}

.topnav a {
    color: white;
    text-decoration: none;
    transition: opacity 0.2s;
    display: inline-flex;
    align-items: center;
}

.topnav a:hover {
    opacity: 0.8;
    color: white;
}

/* Main Navigation */
.navbar {
    padding: 15px 0;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: var(--shadow-sm);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    position: sticky;
    top: 40px;
    z-index: 1020;
}

.navbar.scrolled {
    padding: 10px 0;
    box-shadow: var(--shadow-md);
}

.navbar-brand img {
    height: 50px;
    transition: all 0.3s ease;
}

.nav-link {
    font-weight: 600;
    padding: 10px 18px !important;
    margin: 0 4px;
    border-radius: var(--border-radius);
    color: var(--dark) !important;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    display: flex;
    align-items: center;
}

.nav-link i {
    margin-right: 8px;
    font-size: 0.9em;
    width: 20px;
    text-align: center;
}

.nav-link::before {
    content: '';
    position: absolute;
    bottom: 6px;
    left: 18px;
    width: calc(100% - 36px);
    height: 2px;
    background: var(--primary);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform 0.3s ease;
}

.nav-link:hover::before,
.nav-link.active::before {
    transform: scaleX(1);
    transform-origin: left;
}

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

/* Dropdown Menu */
.dropdown-menu {
    border: none;
    border-radius: var(--border-radius);
    padding: 12px;
    box-shadow: var(--shadow-lg);
    margin-top: 8px !important;
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.dropdown-item {
    padding: 8px 16px;
    border-radius: 8px;
    font-weight: 500;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
}

.dropdown-item i {
    margin-right: 10px;
    color: var(--primary);
    width: 18px;
    text-align: center;
}

.dropdown-item:hover {
    background: var(--primary-light);
    color: var(--primary);
}