/* ==========================================================================
   COURSENOVA NAVIGATION & USER MENU STYLES
   - Shared across all pages for a consistent header experience
   - NAVBAR IS ALWAYS LIGHT (Original Request)
   ========================================================================== */

:root {
    --nav-bg: rgba(255, 255, 255, 0.95);
    --nav-border: #e5e7eb;
    --nav-text: #1f2937;
    --nav-muted: #6b7280;
    --nav-primary: #1e3a8a;
    --nav-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    --secondary-color: #f3f4f6;
    --border-color: #e5e7eb;
    --primary-color: #1e3a8a;
    --text-dark: #1f2937;
    --text-light: #6b7280;
    --white: #ffffff;
}

/* Base Navbar Structure - CONSTANT ACROSS ALL THEMES */
.navbar {
    position: fixed !important;
    top: 0 !important;
    left: 0 !important;
    width: 100% !important;
    background-color: var(--nav-bg) !important;
    border-bottom: 1px solid var(--nav-border) !important;
    z-index: 2000 !important;
    padding: 0.8rem 2rem !important;
    transition: padding 0.3s ease, background 0.3s ease, box-shadow 0.3s ease !important;
    backdrop-filter: blur(10px) !important;
    display: flex !important;
    box-sizing: border-box !important;
}

.navbar.scrolled {
    padding: 0.5rem 2rem !important;
    box-shadow: var(--nav-shadow) !important;
}

.nav-container {
    max-width: 1400px !important;
    margin: 0 auto !important;
    display: flex !important;
    align-items: center !important;
    width: 100% !important;
    gap: 0 !important;
    flex-wrap: nowrap !important;
    padding: 0 !important;
}

.logo {
    font-size: 1.3rem !important;
    font-weight: 800 !important;
    color: var(--nav-primary) !important;
    text-decoration: none !important;
    display: flex !important;
    align-items: center !important;
    gap: 0.6rem !important;
    white-space: nowrap !important;
    flex-shrink: 0 !important;
    min-width: 160px !important;
    transition: opacity 0.2s ease !important;
}

.logo:hover {
    opacity: 0.85 !important;
}

.logo i,
.logo img {
    height: 55px !important;
    width: auto !important;
    object-fit: contain !important;
    object-position: center !important;
    border-radius: 4px !important;
    vertical-align: middle !important;
    flex-shrink: 0 !important;
}

.logo span {
    font-size: 1.25rem !important;
    font-weight: 800 !important;
    color: var(--nav-primary) !important;
    letter-spacing: 0.5px !important;
    display: inline-block !important;
}

.nav-menu {
    display: flex !important;
    list-style: none !important;
    gap: 0.4rem !important;
    align-items: center !important;
    flex: 1 !important;
    justify-content: center !important;
    margin: 0 !important;
    padding: 0 !important;
    flex-wrap: nowrap !important;
    overflow: visible !important; /* Allow dropdowns to be visible */
}

.nav-menu li {
    list-style: none !important;
}

.nav-menu a {
    text-decoration: none !important;
    color: var(--nav-muted) !important;
    font-weight: 500 !important;
    font-size: 0.92rem !important;
    transition: color 0.2s ease, background 0.2s ease !important;
    padding: 0.45rem 0.85rem !important;
    border-radius: 6px !important;
    background: transparent !important;
    white-space: nowrap !important;
    display: inline-block !important;
    position: relative !important;
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--nav-primary) !important;
    background: rgba(30, 58, 138, 0.05) !important;
}

/* ==================== NAV DROPDOWN SYSTEM ==================== */
.nav-dropdown {
    position: relative !important;
}

.nav-dropdown-toggle {
    display: flex !important;
    align-items: center !important;
    gap: 0.4rem !important;
    cursor: pointer !important;
}

.nav-dropdown-menu {
    position: absolute !important;
    top: 100% !important;
    left: 50% !important;
    transform: translateX(-50%) translateY(10px) !important;
    background: white !important;
    min-width: 220px !important;
    border-radius: 12px !important;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.12) !important;
    padding: 0.6rem !important;
    list-style: none !important;
    opacity: 0 !important;
    visibility: hidden !important;
    transition: all 0.3s cubic-bezier(0.165, 0.84, 0.44, 1) !important;
    z-index: 3000 !important;
    border: 1px solid var(--nav-border) !important;
}

.nav-dropdown:hover .nav-dropdown-menu,
.nav-dropdown-toggle:focus + .nav-dropdown-menu {
    opacity: 1 !important;
    visibility: visible !important;
    transform: translateX(-50%) translateY(0) !important;
}

.nav-dropdown-menu li {
    width: 100% !important;
    margin: 2px 0 !important;
}

.nav-dropdown-menu a {
    display: block !important;
    width: 100% !important;
    padding: 0.7rem 1rem !important;
    font-size: 0.88rem !important;
    color: var(--nav-muted) !important;
    border-radius: 8px !important;
    transition: all 0.2s ease !important;
    text-align: left !important;
}

.nav-dropdown-menu a:hover {
    background: rgba(30, 58, 138, 0.05) !important;
    color: var(--nav-primary) !important;
    padding-left: 1.2rem !important;
}

.nav-dropdown-menu a.active {
    background: rgba(30, 58, 138, 0.08) !important;
    color: var(--nav-primary) !important;
    font-weight: 600 !important;
}

.ChevronIcon {
    font-size: 0.7rem !important;
    transition: transform 0.3s ease !important;
    color: var(--nav-muted) !important;
}

.nav-dropdown:hover .ChevronIcon {
    transform: rotate(180deg) !important;
    color: var(--nav-primary) !important;
}

/* ==================== SEARCH BAR IN NAVBAR ==================== */
.nav-search {
    display: flex !important;
    align-items: center !important;
    background-color: var(--secondary-color) !important;
    border-radius: 50px !important;
    padding: 0.2rem 0.4rem !important;
    padding-left: 1rem !important;
    border: 1px solid var(--border-color) !important;
    flex: 1 1 auto !important;
    max-width: 400px !important;
    min-width: 120px !important;
    margin: 0 0.5rem !important;
    transition: all 0.3s ease !important;
}

.nav-search:focus-within {
    border-color: var(--primary-color) !important;
    box-shadow: 0 0 0 3px rgba(30, 58, 138, 0.1) !important;
    background-color: var(--white) !important;
}

.nav-search input {
    border: none !important;
    background: transparent !important;
    outline: none !important;
    width: 100% !important;
    font-family: 'Inter', sans-serif !important;
    font-size: 0.95rem !important;
    color: var(--text-dark) !important;
    padding: 0.5rem 0 !important;
}

.nav-search input::placeholder {
    color: var(--text-light) !important;
}

.nav-search button {
    background-color: var(--primary-color) !important;
    color: var(--white) !important;
    border: none !important;
    width: 36px !important;
    height: 36px !important;
    border-radius: 50% !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    cursor: pointer !important;
    transition: all 0.3s ease !important;
}

.nav-search button:hover {
    background-color: #3730a3 !important;
    transform: scale(1.05) !important;
}

/* User Actions Section */
.nav-buttons {
    display: flex !important;
    gap: 1rem !important;
    align-items: center !important;
    position: relative !important;
}

/* Reverting the buttons color specifically for Google login if needed but let's keep it consistent */
.btn-login {
    background: white !important;
    color: #4285F4 !important;
    border: 1px solid #4285F4 !important;
    padding: 0.5rem 1rem !important;
    border-radius: 6px !important;
    font-weight: 600 !important;
    font-size: 0.9rem !important;
    text-decoration: none !important;
    display: flex !important;
    align-items: center !important;
    gap: 0.5rem !important;
}

.btn-signup {
    background: var(--nav-primary) !important;
    color: white !important;
    padding: 0.5rem 1.2rem !important;
    border-radius: 6px !important;
    font-weight: 600 !important;
    font-size: 0.9rem !important;
    text-decoration: none !important;
}

.user-menu-wrapper {
    position: relative !important;
}

.btn-user-menu {
    display: flex !important;
    align-items: center !important;
    gap: 0.6rem !important;
    background: transparent !important;
    border: 1px solid transparent !important;
    padding: 0.4rem 0.8rem !important;
    border-radius: 50px !important;
    cursor: pointer !important;
    transition: all 0.2s !important;
}

.btn-user-menu:hover,
.btn-user-menu.active {
    background: rgba(0, 0, 0, 0.05) !important;
}

.user-avatar-small {
    width: 32px !important;
    height: 32px !important;
    background: var(--nav-primary) !important;
    color: white !important;
    border-radius: 50% !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    font-weight: 700 !important;
    font-size: 0.9rem !important;
}

.user-name-display {
    font-weight: 600 !important;
    color: var(--nav-text) !important;
    font-size: 0.9rem !important;
    max-width: 120px !important;
    white-space: nowrap !important;
    overflow: hidden !important;
    text-overflow: ellipsis !important;
}

/* Dropdown Content - Themes applied inside .user-dropdown */
.user-dropdown {
    position: absolute !important;
    top: calc(100% + 10px) !important;
    right: 0 !important;
    width: 260px !important;
    background: white !important;
    border-radius: 12px !important;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2) !important;
    opacity: 0 !important;
    visibility: hidden !important;
    transform: translateY(-10px) !important;
    transition: all 0.3s cubic-bezier(0.165, 0.84, 0.44, 1) !important;
    z-index: 10000 !important;
    border: 1px solid #e5e7eb !important;
    overflow: hidden !important;
}

body.dark-theme .user-dropdown {
    background: #1e293b !important;
    border-color: #334155 !important;
    color: #f8fafc !important;
}

.user-dropdown.active {
    opacity: 1 !important;
    visibility: visible !important;
    transform: translateY(0) !important;
}

.dropdown-header {
    padding: 1.25rem !important;
    background: #f9fafb !important;
    border-bottom: 1px solid #e5e7eb !important;
    display: flex !important;
    align-items: center !important;
    gap: 0.8rem !important;
}

body.dark-theme .dropdown-header {
    background: #0f172a !important;
    border-bottom: 1px solid #334155 !important;
}

.dropdown-user-avatar {
    width: 40px !important;
    height: 40px !important;
    background: var(--nav-primary) !important;
    color: white !important;
    border-radius: 50% !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    font-size: 1.2rem !important;
    font-weight: 700 !important;
}

.dropdown-user-info {
    flex: 1 !important;
    overflow: hidden !important;
}

.dropdown-user-name {
    font-weight: 700 !important;
    color: #111827 !important;
    font-size: 0.95rem !important;
    white-space: nowrap !important;
    overflow: hidden !important;
    text-overflow: ellipsis !important;
}

body.dark-theme .dropdown-user-name {
    color: #f8fafc !important;
}

.dropdown-user-email {
    font-size: 0.8rem !important;
    color: #6b7280 !important;
    white-space: nowrap !important;
    overflow: hidden !important;
    text-overflow: ellipsis !important;
}

body.dark-theme .dropdown-user-email {
    color: #94a3b8 !important;
}

.dropdown-items {
    list-style: none !important;
    padding: 0.5rem !important;
}

.dropdown-item a {
    display: flex !important;
    align-items: center !important;
    gap: 0.7rem !important;
    padding: 0.7rem 1rem !important;
    color: #374151 !important;
    text-decoration: none !important;
    font-weight: 500 !important;
    font-size: 0.9rem !important;
    border-radius: 8px !important;
    transition: all 0.2s !important;
    width: 100% !important;
    background: transparent !important;
}

body.dark-theme .dropdown-item a {
    color: #cbd5e1 !important;
}

.dropdown-item a:hover {
    background: #f3f4f6 !important;
    color: var(--nav-primary) !important;
}

body.dark-theme .dropdown-item a:hover {
    background: #334155 !important;
    color: #818cf8 !important;
}

.dropdown-item i {
    width: 18px !important;
    text-align: center !important;
    font-size: 0.95rem !important;
}

.dropdown-divider {
    height: 1px !important;
    background: #e5e7eb !important;
    margin: 0.5rem 0 !important;
}

body.dark-theme .dropdown-divider {
    background: #334155 !important;
}

.logout-item a:hover {
    background: #ff74741c !important;
    color: #dc2626 !important;
}

/* Mobile Toggle */
.menu-toggle {
    display: none !important;
    background: none !important;
    border: none !important;
    font-size: 1.6rem !important;
    color: var(--nav-text) !important;
    cursor: pointer !important;
    padding: 0.5rem !important;
    order: 3 !important;
    transition: all 0.3s ease !important;
}

.menu-toggle.active i:before {
    content: "\f00d" !important;
    /* FontAwesome Times icon */
}

/* Mobile Overlay */
.navbar-overlay {
    position: fixed !important;
    top: 0 !important;
    left: 0 !important;
    width: 100vw !important;
    height: 100vh !important;
    background: rgba(0, 0, 0, 0.4) !important;
    backdrop-filter: blur(4px) !important;
    z-index: 1999 !important;
    opacity: 0 !important;
    visibility: hidden !important;
    transition: all 0.3s ease !important;
}

.navbar-overlay.active {
    opacity: 1 !important;
    visibility: visible !important;
}

/* Responsive Media Queries */
@media (max-width: 1200px) {
    .nav-container {
        max-width: 98% !important;
        gap: 0.5rem !important;
    }

    .nav-search {
        flex: 0 0 280px !important;
        min-width: 200px !important;
    }

    .nav-menu {
        gap: 0.8rem !important;
    }
}

@media (max-width: 992px) {
    .nav-search {
        display: none !important;
        /* Hide search in navbar on tablets, usually moved to menu or separate row */
    }

    .nav-menu {
        gap: 1rem !important;
    }
}

@media (max-width: 768px) {
    .navbar {
        padding: 0.8rem 1.2rem !important;
    }

    .menu-toggle {
        display: block !important;
    }

    .nav-menu {
        position: fixed !important;
        top: 0 !important;
        right: -100% !important;
        /* Off-screen */
        width: 280px !important;
        height: 100vh !important;
        background: white !important;
        flex-direction: column !important;
        justify-content: flex-start !important;
        align-items: flex-start !important;
        padding: 80px 2rem 2rem !important;
        gap: 1.5rem !important;
        box-shadow: -10px 0 30px rgba(0, 0, 0, 0.1) !important;
        transition: all 0.4s cubic-bezier(0.165, 0.84, 0.44, 1) !important;
        z-index: 2001 !important;
        overflow-y: auto !important;
    }

    .nav-menu.active {
        right: 0 !important;
    }

    .nav-menu li {
        width: 100% !important;
    }

    .nav-menu a {
        display: block !important;
        width: 100% !important;
        font-size: 1.1rem !important;
        padding: 0.8rem 1rem !important;
        border-radius: 10px !important;
    }

    .nav-buttons {
        order: 2 !important;
        margin-left: auto !important;
    }

    .user-name-display {
        display: none !important;
        /* Hide name on mobile, keep avatar */
    }

    .btn-login {
        padding: 0.5rem 0.8rem !important;
        font-size: 0.8rem !important;
    }

    .btn-signup {
        padding: 0.5rem 0.8rem !important;
        font-size: 0.8rem !important;
    }

    .btn-signup i {
        display: none !important;
    }
}

@media (max-width: 480px) {
    .logo span {
        font-size: 1rem !important;
        /* Keep COURSENOVA text visible even on small screens */
    }

    .logo img {
        height: 28px !important;
    }

    .navbar {
        padding: 0.6rem 0.8rem !important;
    }

    .nav-buttons {
        gap: 0.5rem !important;
    }

    .user-avatar-small {
        width: 28px !important;
        height: 28px !important;
        font-size: 0.8rem !important;
    }
}

/* Removed body.no-scroll to allow pages to scale seamlessly without locking scroll *//*
body.no-scroll {
    overflow: hidden !important;
}
*/

/* Enrollment Badge for "Courses" link */
.enroll-badge {
    background: #ef4444 !important;
    color: white !important;
    font-size: 0.7rem !important;
    padding: 2px 6px !important;
    border-radius: 99px !important;
    margin-left: 6px !important;
    font-weight: 700 !important;
    vertical-align: middle !important;
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    min-width: 18px !important;
    height: 18px !important;
    box-shadow: 0 2px 8px rgba(239, 68, 68, 0.4) !important;
    animation: badgePop 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275) !important;
}

@keyframes badgePop {
    from {
        transform: scale(0);
        opacity: 0;
    }

    to {
        transform: scale(1);
        opacity: 1;
    }
}