/* Enhanced X.com Light Mode Inspired Styling */
:root {
    --twitter-blue: #1d9bf0;
    --twitter-blue-hover: #1a8cd8;
    --twitter-blue-light: #e7f3ff;
    --twitter-blue-gradient: linear-gradient(135deg, #1d9bf0 0%, #1a8cd8 100%);
    --twitter-dark: #0f1419;
    --twitter-gray: #536471;
    --twitter-light-gray: #f7f9fa;
    --twitter-border: #eff3f4;
    --twitter-success: #00ba7c;
    --twitter-success-gradient: linear-gradient(135deg, #00ba7c 0%, #00a86b 100%);
    --twitter-danger: #f4212e;
    --twitter-warning: #ffad1f;
    --shadow-light: 0 1px 3px rgba(0, 0, 0, 0.12), 0 1px 2px rgba(0, 0, 0, 0.24);
    --shadow-medium: 0 4px 6px rgba(0, 0, 0, 0.07), 0 1px 3px rgba(0, 0, 0, 0.06);
    --shadow-heavy: 0 10px 25px rgba(0, 0, 0, 0.1), 0 4px 10px rgba(0, 0, 0, 0.06);
    --shadow-glow: 0 0 20px rgba(29, 155, 240, 0.3);
    --gradient-bg: linear-gradient(135deg, #f7f9fa 0%, #e7f3ff 100%);
    --card-gradient: linear-gradient(135deg, #ffffff 0%, #f8fafc 100%);
}

* {
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background: var(--gradient-bg);
    color: var(--twitter-dark);
    line-height: 1.5;
    margin: 0;
    padding: 0;
    min-height: 100vh;
}

/* Custom Bootstrap Overrides */
.btn-primary {
    background: var(--twitter-blue-gradient);
    border: none;
    font-weight: 600;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s;
}

.btn-primary:hover::before {
    left: 100%;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow), var(--shadow-heavy);
}

.btn-outline-primary {
    color: var(--twitter-blue);
    border-color: var(--twitter-blue);
    font-weight: 600;
}

.btn-outline-primary:hover {
    background-color: var(--twitter-blue-light);
    border-color: var(--twitter-blue);
    color: var(--twitter-blue);
}

.btn-success {
    background: var(--twitter-success-gradient);
    border: none;
    position: relative;
    overflow: hidden;
}

.btn-success::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s;
}

.btn-success:hover::before {
    left: 100%;
}

.btn-success:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 20px rgba(0, 186, 124, 0.3), var(--shadow-heavy);
}

.btn-outline-secondary {
    color: var(--twitter-gray);
    border-color: var(--twitter-border);
}

.btn-outline-secondary:hover {
    background-color: var(--twitter-light-gray);
    border-color: var(--twitter-border);
    color: var(--twitter-gray);
}

.form-control {
    border-color: var(--twitter-border);
    transition: all 0.2s ease;
}

.form-control:focus {
    border-color: var(--twitter-blue);
    box-shadow: 0 0 0 0.2rem rgba(29, 155, 240, 0.25);
}

.card {
    background: var(--card-gradient);
    border: 1px solid var(--twitter-border);
    box-shadow: var(--shadow-medium);
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.card:hover {
    box-shadow: var(--shadow-heavy);
    transform: translateY(-5px);
}

.alert-danger {
    background-color: #fef2f2;
    border-color: #fecaca;
    color: #dc2626;
}

.alert-warning {
    background-color: #fffbeb;
    border-color: #fed7aa;
    color: #d97706;
}

/* Homepage Styles */
.brand-icon {
    font-size: 3rem;
    color: var(--twitter-blue);
    margin-bottom: 1rem;
}

.brand-title {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--twitter-dark);
    margin-bottom: 0.5rem;
}

.rounded-pill {
    border-radius: 50px !important;
}

.rounded-4 {
    border-radius: 1rem !important;
}

/* Chat Header Styles */
.chat-header {
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--twitter-border);
    z-index: 1000;
}

.chat-room-icon {
    width: 40px;
    height: 40px;
    background-color: var(--twitter-blue-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--twitter-blue);
    font-size: 1.2rem;
}

/* Messages Container */
.messages-container {
    overflow-y: auto;
    scroll-behavior: smooth;
    padding-bottom: 20px;
}

.messages-container::-webkit-scrollbar {
    width: 6px;
}

.messages-container::-webkit-scrollbar-track {
    background: var(--twitter-light-gray);
}

.messages-container::-webkit-scrollbar-thumb {
    background: var(--twitter-border);
    border-radius: 3px;
}

.messages-container::-webkit-scrollbar-thumb:hover {
    background: var(--twitter-gray);
}

/* Welcome Message */
.welcome-message {
    margin: 2rem 0;
}

.welcome-icon {
    font-size: 3rem;
    color: var(--twitter-blue);
    opacity: 0.7;
}

/* Message Bubbles */
.message {
    margin-bottom: 1rem;
    animation: fadeInUp 0.3s ease;
}

.message-bubble {
    max-width: 70%;
    padding: 12px 16px;
    border-radius: 18px;
    position: relative;
    word-wrap: break-word;
    transition: all 0.2s ease;
}

.message-bubble:hover {
    transform: translateY(-1px);
}

.message-bubble:hover .copy-btn {
    opacity: 1;
    visibility: visible;
}

.copy-btn {
    position: absolute;
    top: 8px;
    right: 8px;
    background: rgba(0, 0, 0, 0.1);
    border: none;
    border-radius: 50%;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.2s ease;
    cursor: pointer;
    font-size: 10px;
    color: rgba(255, 255, 255, 0.8);
}

.message.other .copy-btn {
    background: rgba(0, 0, 0, 0.05);
    color: var(--twitter-gray);
}

.copy-btn:hover {
    background: rgba(0, 0, 0, 0.2);
    transform: scale(1.1);
}

.message.other .copy-btn:hover {
    background: rgba(0, 0, 0, 0.1);
}

.message.own .message-bubble {
    background-color: var(--twitter-blue);
    color: white;
    margin-left: auto;
    border-bottom-right-radius: 4px;
}

.message.other .message-bubble {
    background-color: white;
    color: var(--twitter-dark);
    border: 1px solid var(--twitter-border);
    margin-right: auto;
    border-bottom-left-radius: 4px;
}

.message-header {
    display: flex;
    align-items: center;
    margin-bottom: 4px;
    font-size: 0.85rem;
}

.message.own .message-header {
    justify-content: flex-end;
    color: rgba(255, 255, 255, 0.8);
}

.message.other .message-header {
    justify-content: flex-start;
    color: var(--twitter-gray);
}

.user-avatar {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background-color: var(--twitter-blue);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 0.8rem;
    font-weight: 600;
    margin-right: 8px;
}

.message.own .user-avatar {
    margin-right: 0;
    margin-left: 8px;
    order: 2;
}

.username {
    font-weight: 600;
    margin-right: 8px;
}

.message.own .username {
    margin-right: 0;
    margin-left: 8px;
}

.timestamp {
    font-size: 0.75rem;
    opacity: 0.7;
}

.message-content {
    font-size: 0.95rem;
    line-height: 1.4;
}

/* System Messages */
.system-message {
    text-align: center;
    margin: 1rem 0;
    padding: 8px 16px;
    background-color: var(--twitter-light-gray);
    border-radius: 16px;
    font-size: 0.85rem;
    color: var(--twitter-gray);
    border: 1px solid var(--twitter-border);
}

/* Chat Footer */
.chat-footer {
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-top: 1px solid var(--twitter-border);
}

.input-group .form-control {
    border-right: none;
    padding-right: 20px;
}

.input-group .btn {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Typing Indicator */
.typing-indicator {
    position: fixed;
    bottom: 80px;
    left: 0;
    right: 0;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-top: 1px solid var(--twitter-border);
    padding: 8px 0;
    z-index: 999;
}

.typing-text {
    display: flex;
    align-items: center;
    color: var(--twitter-gray);
    font-size: 0.85rem;
    padding: 0 20px;
}

.typing-dots {
    margin-left: 8px;
    display: flex;
    align-items: center;
}

.typing-dots span {
    width: 4px;
    height: 4px;
    background-color: var(--twitter-gray);
    border-radius: 50%;
    margin: 0 1px;
    animation: typingDots 1.4s infinite ease-in-out;
}

.typing-dots span:nth-child(1) { animation-delay: -0.32s; }
.typing-dots span:nth-child(2) { animation-delay: -0.16s; }

/* Connection Status */
.connection-status {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1001;
}

/* Modal Styles */
.modal-content {
    border: none;
    box-shadow: var(--shadow-heavy);
}

.modal-header {
    border-bottom: 1px solid var(--twitter-border);
}

.modal-footer {
    border-top: 1px solid var(--twitter-border);
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes typingDots {
    0%, 80%, 100% {
        transform: scale(0);
        opacity: 0.5;
    }
    40% {
        transform: scale(1);
        opacity: 1;
    }
}

@keyframes pulse {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
    100% {
        transform: scale(1);
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .brand-title {
        font-size: 2rem;
    }
    
    .brand-icon {
        font-size: 2.5rem;
    }
    
    .message-bubble {
        max-width: 85%;
    }
    
    .chat-header .container-fluid {
        padding: 0 15px;
    }
    
    .messages-container {
        padding: 15px;
    }
    
    .chat-footer .container-fluid {
        padding: 0 15px;
    }
}

@media (max-width: 576px) {
    .card-body {
        padding: 2rem !important;
    }
    
    .message-bubble {
        max-width: 90%;
        padding: 10px 14px;
    }
    
    .btn-lg {
        padding: 12px 24px;
    }
    
    .form-control-lg {
        padding: 12px 20px;
    }
}

/* Dark mode support (for future implementation) */
@media (prefers-color-scheme: dark) {
    /* Keep light mode for now as requested */
}

/* Utility Classes */
.text-twitter-blue {
    color: var(--twitter-blue) !important;
}

.bg-twitter-blue {
    background-color: var(--twitter-blue) !important;
}

.border-twitter {
    border-color: var(--twitter-border) !important;
}

.shadow-twitter {
    box-shadow: var(--shadow-medium) !important;
}

/* Loading States */
.loading-pulse {
    animation: pulse 2s infinite;
}

/* Focus States */
.btn:focus,
.form-control:focus {
    outline: none;
    box-shadow: 0 0 0 0.2rem rgba(29, 155, 240, 0.25);
}

/* Hover Effects */
.message-bubble:hover {
    transform: translateY(-1px);
    transition: transform 0.2s ease;
}

.btn {
    transition: all 0.2s ease;
}

.btn:hover {
    transform: translateY(-1px);
}

/* Custom Scrollbar for Webkit browsers */
* {
    scrollbar-width: thin;
    scrollbar-color: var(--twitter-border) var(--twitter-light-gray);
}

/* Additional Twitter-like styling */
.dropdown-menu {
    border: 1px solid var(--twitter-border);
    box-shadow: var(--shadow-medium);
    border-radius: 12px;
}

.dropdown-item {
    padding: 12px 16px;
    transition: background-color 0.2s ease;
}

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

.dropdown-item.text-danger:hover {
    background-color: #fef2f2;
    color: var(--twitter-danger);
}

/* Status indicators */
.online-indicator {
    width: 8px;
    height: 8px;
    background-color: var(--twitter-success);
    border-radius: 50%;
    display: inline-block;
    margin-right: 6px;
}

.offline-indicator {
    width: 8px;
    height: 8px;
    background-color: var(--twitter-gray);
    border-radius: 50%;
    display: inline-block;
    margin-right: 6px;
}