body {
    font-family: 'Inter', sans-serif;
    background: #090a0f;
    color: #E5E7EB; /* gray-200 */
}
#cosmic-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -10;
}
.glass-pane {
    background: rgba(10, 10, 20, 0.5);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid rgba(0, 191, 255, 0.2);
    animation: float 8s ease-in-out infinite;
}
main .glass-pane { animation-delay: -2s; }
.right-sidebar .glass-pane { animation-delay: -4s; }

@keyframes float {
    0% { transform: translateY(0px); }
    50% { transform: translateY(-8px); }
    100% { transform: translateY(0px); }
}

/* Filter buttons */
.filter-btn {
    transition: all 0.3s ease;
    border: 1px solid transparent;
}

.filter-btn:not(.active):hover {
    background-color: rgba(75, 85, 99, 0.7) !important;
    color: white !important;
}

.filter-btn.active {
    box-shadow: 0 0 15px rgba(79, 70, 229, 0.4);
}

/* Search results animations */
.user-card {
    transition: all 0.3s ease;
    border: 1px solid rgba(75, 85, 99, 0.3);
}

.user-card:hover {
    border-color: rgba(79, 70, 229, 0.4);
    box-shadow: 0 4px 20px rgba(79, 70, 229, 0.15);
    transform: translateY(-2px);
}

/* Highlight matches */
mark {
    background-color: rgba(251, 191, 36, 0.3) !important;
    color: rgb(253, 224, 71) !important;
    padding: 2px 4px;
    border-radius: 4px;
    font-weight: 600;
}

/* Online status indicator */
.user-card .relative::after {
    content: '';
    position: absolute;
    bottom: -2px;
    right: -2px;
    width: 16px;
    height: 16px;
    background-color: #10b981;
    border: 2px solid #090a0f;
    border-radius: 50%;
}

/* Search input focus state */
#friend-search-input:focus {
    outline: none;
    box-shadow: 0 0 0 2px rgba(79, 70, 229, 0.5);
}

/* Loading animation */
@keyframes spin {
    to { transform: rotate(360deg); }
}

.animate-spin {
    animation: spin 1s linear infinite;
}

/* Button hover effects */
.add-friend-btn, .friend-btn, .message-btn {
    transition: all 0.2s ease;
}

.add-friend-btn:hover {
    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.4);
    transform: translateY(-1px);
}

.friend-btn:hover {
    box-shadow: 0 4px 12px rgba(75, 85, 99, 0.4);
}

.message-btn:hover {
    transform: scale(1.1);
}

/* Notification styles */
.notification {
    animation: slideIn 0.3s ease-out;
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

.secondary-button {
    background-color: rgba(0, 191, 255, 0.15);
    border: 1px solid rgba(0, 191, 255, 0.3);
    transition: all 0.3s ease;
}
.secondary-button:hover {
    background-color: rgba(0, 191, 255, 0.3);
}
.logout-button {
    background-color: rgba(220, 38, 38, 0.2);
    border: 1px solid rgba(220, 38, 38, 0.4);
    transition: all 0.3s ease;
}
.logout-button:hover {
    background-color: rgba(220, 38, 38, 0.4);
    color: #fecaca;
}
body::-webkit-scrollbar { width: 8px; }
body::-webkit-scrollbar-track { background: #090a0f; }
body::-webkit-scrollbar-thumb {
    background: rgba(0, 191, 255, 0.3);
    border-radius: 4px;
}
body::-webkit-scrollbar-thumb:hover { background: rgba(0, 191, 255, 0.5); }

.hidden {
    display: none;
}