:root {
    --bg-color: #121212;
    --card-bg: #1e1e1e;
    --text-color: #ffffff;
    --text-muted: #a0a0a0;
    --accent-color: #f45a68;
    --button-color: #753ba6;
    --border-color: #333333;
    --sidebar-width: 250px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    display: flex;
    min-height: 100vh;
}

a {
    color: inherit;
    text-decoration: none;
}

/* Sidebar */
.sidebar {
    width: var(--sidebar-width);
    background-color: var(--bg-color);
    border-right: 1px solid var(--border-color);
    padding: 2rem 1rem;
    position: fixed;
    height: 100vh;
    display: flex;
    flex-direction: column;
}

.logo {
    font-size: 2rem;
    font-weight: 900;
    font-style: italic;
    letter-spacing: -1px;
    margin-bottom: 2rem;
    padding-left: 1rem;
}

.nav-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.nav-links li a {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.75rem 1rem;
    border-radius: 8px;
    color: var(--text-muted);
    transition: all 0.3s ease;
}

.nav-links li a:hover, .nav-links li a.active {
    background-color: var(--card-bg);
    color: var(--text-color);
}

.nav-links li a i {
    font-size: 1.2rem;
}

.sidebar-bottom {
    margin-top: auto;
}

/* Main Content */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    padding: 2rem;
}

/* Header actions (right top) */
.top-header {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    gap: 1rem;
    margin-bottom: 2rem;
}

/* Cards / Grid */
.directory-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
}

.user-card {
    background-color: transparent;
    padding: 1.5rem;
    display: flex;
    gap: 1.5rem;
    align-items: flex-start;
    border-radius: 12px;
    transition: background-color 0.3s ease;
}

.user-card:hover {
    background-color: var(--card-bg);
}

.avatar {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    object-fit: cover;
    background-color: var(--card-bg);
}

.avatar-lg {
    width: 150px;
    height: 150px;
}

.user-info h3 {
    margin-bottom: 0.25rem;
    font-size: 1.1rem;
}

.user-info .username {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.user-info .location {
    color: var(--text-muted);
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    gap: 0.25rem;
    margin-bottom: 0.75rem;
}

.user-info .desc {
    font-size: 0.9rem;
    line-height: 1.5;
    color: #cccccc;
}

/* Search bar */
.search-container {
    margin-bottom: 2rem;
}
.search-input {
    width: 100%;
    max-width: 600px;
    padding: 1rem 1.5rem;
    border-radius: 30px;
    border: 1px solid var(--border-color);
    background-color: var(--bg-color);
    color: var(--text-color);
    font-size: 1rem;
    outline: none;
    transition: border-color 0.3s;
}
.search-input:focus {
    border-color: var(--accent-color);
}

/* Filters */
.filters-bar {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
}
.filter-select {
    background-color: var(--bg-color);
    color: var(--text-color);
    border: 1px solid var(--border-color);
    padding: 0.75rem 1rem;
    border-radius: 8px;
    outline: none;
    cursor: pointer;
}

/* Forms */
.auth-container {
    max-width: 400px;
    margin: 4rem auto;
    background-color: var(--bg-color);
    padding: 2rem;
    border-radius: 12px;
    border: 1px solid var(--border-color);
}

.auth-container h2 {
    text-align: center;
    margin-bottom: 2rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
    color: var(--text-muted);
}

.form-control {
    width: 100%;
    padding: 0.75rem 1rem;
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-color);
    outline: none;
}
.form-control:focus {
    border-color: var(--text-color);
}

/* Custom Multi-Select Dropdown */
.custom-select-container {
    position: relative;
    width: 100%;
}
.custom-select-header {
    padding: 0.75rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background-color: var(--bg-color);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--text-color);
}
.custom-select-dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    max-height: 250px;
    overflow-y: auto;
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    z-index: 100;
    margin-top: 0.5rem;
    padding: 1rem;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
    display: none;
}
.custom-select-dropdown::-webkit-scrollbar {
    width: 8px;
}
.custom-select-dropdown::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    text-align: center;
    transition: all 0.3s ease;
    border: none;
}

.btn-primary {
    background-color: var(--button-color);
    color: #ffffff;
    width: 100%;
}
.btn-primary:hover {
    opacity: 0.9;
}

.btn-outline {
    background-color: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-color);
}
.btn-outline:hover {
    background-color: var(--card-bg);
}

/* Profile Specific */
.profile-header {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    margin-bottom: 3rem;
}

.tags {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    margin-top: 0.5rem;
}

.tag {
    background-color: rgba(255, 255, 255, 0.05);
    padding: 0.25rem 0.75rem;
    border-radius: 4px;
    font-size: 0.8rem;
    color: var(--text-muted);
}

.section-title {
    font-size: 1.2rem;
    margin-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.5rem;
}

.profile-section {
    margin-bottom: 2rem;
}

.contact-links {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.contact-link {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background-color: rgba(255, 255, 255, 0.03);
    border-radius: 8px;
}

/* Mobile Top Bar & Overlay */
.mobile-top-bar {
    display: none;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
    background-color: var(--bg-color);
    border-bottom: 1px solid var(--border-color);
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
}
.mobile-logo img {
    height: 30px;
}
.hamburger-menu {
    background: none;
    border: none;
    color: var(--text-color);
    font-size: 1.5rem;
    cursor: pointer;
}
.sidebar-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    z-index: 1001;
    opacity: 0;
    transition: opacity 0.3s ease;
}
.sidebar-overlay.active {
    opacity: 1;
    display: block;
}

/* Live Search Dropdown */
.live-search-dropdown {
    position: absolute;
    top: calc(100% + 0.5rem);
    left: 0;
    width: 100%;
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.5);
    z-index: 1000;
    max-height: 400px;
    overflow-y: auto;
    display: none;
    text-align: left;
}
.live-search-dropdown.active {
    display: block;
}
.live-search-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
    transition: background-color 0.2s;
    color: var(--text-color);
}
.live-search-item:last-child {
    border-bottom: none;
}
.live-search-item:hover {
    background-color: rgba(255, 255, 255, 0.05);
}
.live-search-item img {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    object-fit: cover;
}
.live-search-item-info h4 {
    margin: 0 0 0.2rem 0;
    font-size: 1rem;
}
.live-search-item-info span {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* Responsive Utilities */
.responsive-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

@media (max-width: 768px) {
    body {
        flex-direction: column;
        padding-top: 60px; /* Space for mobile top bar */
    }
    
    .mobile-top-bar {
        display: flex;
    }

    .sidebar {
        width: 280px;
        position: fixed;
        top: 0;
        left: -300px;
        height: 100%;
        overflow-y: auto;
        z-index: 1002;
        background-color: var(--bg-color);
        transition: left 0.3s ease;
        padding: 2rem 1rem;
        border-right: 1px solid var(--border-color);
    }
    .sidebar.active {
        left: 0;
    }
    
    .sidebar .logo {
        display: none; /* Hide logo in sidebar since it's in the top bar */
    }
    
    .nav-links {
        flex-direction: column;
        justify-content: flex-start;
    }
    
    .main-content {
        margin-left: 0;
        padding: 1rem;
        width: 100%;
    }
    
    .responsive-grid {
        grid-template-columns: 1fr;
    }
    
    .directory-grid {
        grid-template-columns: 1fr;
    }
    
    .user-card {
        flex-direction: row;
        align-items: flex-start;
        text-align: left;
        gap: 1.25rem;
        padding: 1.25rem;
    }
    
    .avatar {
        width: 50px;
        height: 50px;
    }
    
    .user-info {
        flex: 1;
        min-width: 0;
    }
    
    .user-info .location {
        justify-content: flex-start;
    }

    /* Filters Bar Mobile Drawer */
    .mobile-filter-btn {
        display: flex !important;
        align-items: center;
        gap: 0.5rem;
    }
    .filters-bar {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100vh;
        background-color: var(--bg-color);
        z-index: 2000;
        flex-direction: column;
        padding: 2rem;
        transform: translateY(100%);
        transition: transform 0.3s ease;
        margin: 0 !important;
        overflow-y: auto;
    }
    .filters-bar.active {
        transform: translateY(0);
    }
    .filters-bar .filter-select {
        width: 100%;
        margin-bottom: 1rem;
    }
    .mobile-filter-header {
        display: flex !important;
    }
    
    .top-header {
        flex-direction: column;
        align-items: flex-start;
        width: 100%;
    }
    .top-header > div {
        width: 100%;
    }
    
    /* Onboarding specifics */
    .onboarding-header-flex {
        flex-direction: column;
        gap: 1rem;
        align-items: flex-start;
    }
    
    .profile-header-flex {
        flex-direction: column;
        text-align: center;
    }
}