:root { 
    --primary: #00ff9d; 
    --secondary: #00b8ff; 
    --danger: #ff0055; 
    --dark: #0a0f0f; 
    --darker: rgba(5, 8, 8, 0.6); /* Translucent for Glassmorphism */
    --light: #e0e0e0; 
    --glow: rgba(0, 255, 157, 0.5); 
    --glass-border: rgba(0, 255, 157, 0.3);
}

* { 
    margin: 0; 
    padding: 0; 
    box-sizing: border-box; 
}

body { 
    font-family: 'Rajdhani', sans-serif; 
    background: #000; 
    color: var(--light); 
    height: 100dvh; 
    overflow: hidden; 
}

/* --- SECURITY NETWORK BACKGROUND & EFFECTS --- */
.cyber-bg { 
    position: fixed; 
    top: 0; 
    left: 0; 
    width: 100%; 
    height: 100%; 
    background: radial-gradient(circle at center, #0a1f1f 0%, #000 80%); 
    z-index: -3; 
}

#network-canvas {
    position: fixed; 
    top: 0; 
    left: 0; 
    width: 100%; 
    height: 100%; 
    z-index: -2; 
    opacity: 0.8;
}

.crt-scanlines {
    position: fixed; 
    top: 0; 
    left: 0; 
    width: 100%; 
    height: 100%; 
    z-index: 9999;
    background: linear-gradient(rgba(18, 16, 16, 0) 50%, rgba(0, 0, 0, 0.1) 50%);
    background-size: 100% 4px; 
    pointer-events: none; 
    opacity: 0.4;
}

.vignette {
    position: fixed; 
    top: 0; 
    left: 0; 
    width: 100%; 
    height: 100%; 
    z-index: -1; 
    pointer-events: none;
    background: radial-gradient(circle, transparent 50%, rgba(0,0,0,0.8) 150%);
}

/* Shared Utilities */
.glitch-title { 
    font-family: 'Orbitron', sans-serif; 
    color: var(--primary); 
    text-transform: uppercase; 
    text-align: center;
    text-shadow: 0 0 10px var(--primary);
}

/* --- GLASSMORPHISM UI CONFIGURATION --- */
.auth-card, .sidebar, .chat-header, .input-container, .sticker-picker {
    background: var(--darker);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

/* Auth Layout */
.auth-container { 
    display: flex; 
    justify-content: center; 
    align-items: center; 
    min-height: 100dvh; 
    padding: 20px; 
    overflow-y: auto; 
    position: relative; 
    z-index: 10;
}

.auth-card { 
    border: 1px solid var(--glass-border); 
    padding: 40px; 
    width: 100%; 
    max-width: 450px; 
    box-shadow: 0 0 30px rgba(0, 255, 157, 0.1), inset 0 0 20px rgba(0, 255, 157, 0.05); 
    border-radius: 12px;
}

.auth-header { 
    margin-bottom: 25px; 
    text-align: center; 
}

.auth-header p { 
    color: var(--secondary); 
    margin-top: 5px; 
}

.input-group { 
    margin-bottom: 20px; 
    width: 100%; 
}

.input-group label { 
    display: block; 
    color: var(--primary); 
    font-size: 13px; 
    margin-bottom: 8px; 
    font-weight: 600; 
}

.input-group input, .input-group select { 
    width: 100%; 
    padding: 14px; 
    background: rgba(0,0,0,0.5); 
    border: 1px solid var(--glass-border); 
    color: var(--light); 
    font-size: 16px; 
    border-radius: 8px; 
    transition: 0.3s;
}

.input-group input:focus, .input-group select:focus { 
    outline: none; 
    border-color: var(--primary); 
    box-shadow: 0 0 15px var(--glow); 
}

.cyber-button { 
    padding: 15px; 
    background: rgba(0, 255, 157, 0.1); 
    border: 1px solid var(--primary); 
    color: var(--primary); 
    font-family: 'Orbitron', sans-serif; 
    font-weight: bold; 
    cursor: pointer; 
    transition: 0.3s; 
    width: 100%; 
    border-radius: 8px; 
    display: flex; 
    justify-content: center; 
    align-items: center; 
    gap: 8px; 
    backdrop-filter: blur(5px);
}

.cyber-button:hover { 
    background: var(--primary); 
    color: #000; 
    box-shadow: 0 0 20px var(--primary);
}

.cyber-button.danger { 
    border-color: var(--danger); 
    color: var(--danger); 
    background: rgba(255, 0, 85, 0.1);
}

.cyber-button.danger:hover { 
    background: var(--danger); 
    color: white; 
    box-shadow: 0 0 20px var(--danger);
}

.auth-footer { 
    text-align: center; 
    margin-top: 20px; 
}

.neon-link { 
    color: var(--secondary); 
    text-decoration: none; 
    font-weight: bold; 
    transition: 0.3s;
}

.neon-link:hover { 
    color: var(--primary); 
    text-shadow: 0 0 8px var(--primary); 
}

/* Chat Container */
.chat-container { 
    display: flex; 
    height: 100dvh; 
    width: 100vw; 
    overflow: hidden; 
    position: relative; 
    background: transparent; 
    z-index: 10;
}

/* Sidebar */
.sidebar { 
    width: 350px; 
    border-right: 1px solid var(--glass-border); 
    display: flex; 
    flex-direction: column; 
    z-index: 10; 
}

.user-profile { 
    padding: 20px; 
    border-bottom: 1px solid var(--glass-border); 
    display: flex; 
    align-items: center; 
    gap: 15px; 
}

.avatar-img { 
    width: 50px; 
    height: 50px; 
    min-width: 50px; 
    border-radius: 50%; 
    border: 2px solid var(--primary); 
    object-fit: cover; 
}

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

.user-info h3 { 
    white-space: nowrap; 
    overflow: hidden; 
    text-overflow: ellipsis; 
    font-size: 18px; 
    text-shadow: 0 0 5px var(--primary);
}

.status { 
    font-size: 12px; 
    font-weight: bold; 
    letter-spacing: 1px; 
}

.status.online { 
    color: var(--primary); 
}

.contacts-list { 
    flex: 1; 
    overflow-y: auto; 
}

.contact-item { 
    padding: 15px 20px; 
    display: flex; 
    align-items: center; 
    gap: 15px; 
    cursor: pointer; 
    border-bottom: 1px solid rgba(0,255,157,0.1); 
    transition: 0.2s;
}

.contact-item:hover, .contact-item.active { 
    background: rgba(0,255,157,0.2); 
    border-left: 4px solid var(--primary); 
}

.contact-avatar { 
    position: relative; 
}

.contact-avatar img { 
    width: 45px; 
    height: 45px; 
    border-radius: 50%; 
    object-fit: cover; 
}

.status-dot { 
    position: absolute; 
    bottom: 0; 
    right: 0; 
    width: 12px; 
    height: 12px; 
    border-radius: 50%; 
    border: 2px solid #000; 
}

.status-dot.online { 
    background: var(--primary); 
    box-shadow: 0 0 8px var(--primary);
}

.status-dot.offline { 
    background: var(--danger); 
}

.contact-details { 
    flex: 1; 
    overflow: hidden; 
}

.contact-name { 
    font-weight: bold; 
    font-size: 16px; 
    white-space: nowrap; 
    overflow: hidden; 
    text-overflow: ellipsis; 
    display: block; 
    text-shadow: 0 0 5px rgba(255,255,255,0.3);
}

/* Chat Area */
.chat-area { 
    flex: 1; 
    display: flex; 
    flex-direction: column; 
    background: transparent; 
    position: relative; 
    width: 100%; 
    z-index: 20; 
}

.chat-header { 
    padding: 15px 20px; 
    border-bottom: 1px solid var(--glass-border); 
    display: flex; 
    align-items: center; 
    gap: 15px; 
}

.mobile-back-btn { 
    display: none; 
    background: transparent; 
    border: none; 
    color: var(--primary); 
    font-size: 20px; 
    cursor: pointer; 
}

.chat-header-avatar { 
    width: 40px; 
    height: 40px; 
    border-radius: 50%; 
    object-fit: cover; 
    border: 1px solid var(--primary); 
}

.chat-header-info { 
    flex: 1; 
    overflow: hidden; 
}

.chat-header h2 { 
    color: var(--primary); 
    font-family: 'Orbitron'; 
    font-size: 18px; 
    white-space: nowrap; 
    overflow: hidden; 
    text-overflow: ellipsis; 
    text-shadow: 0 0 8px var(--primary);
}

.typing-indicator { 
    color: var(--primary); 
    font-size: 12px; 
    font-style: italic; 
    min-height: 15px; 
}

/* Messages */
.messages-container { 
    flex: 1; 
    overflow-y: auto; 
    padding: 20px; 
    display: flex; 
    flex-direction: column; 
    gap: 10px; 
}

.message { 
    max-width: 75%; 
    padding: 10px 15px; 
    border-radius: 18px; 
    font-size: 15px;
    line-height: 1.4;
    word-wrap: break-word;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    position: relative;
}

.message.sent { 
    align-self: flex-end; 
    background: rgba(0, 255, 157, 0.15); 
    border: 1px solid var(--primary);
    color: #fff; 
    border-bottom-right-radius: 4px; 
    box-shadow: 0 4px 15px rgba(0,255,157,0.1);
}

.message.received { 
    align-self: flex-start; 
    background: rgba(0, 0, 0, 0.6); 
    border: 1px solid var(--secondary); 
    color: var(--light); 
    border-bottom-left-radius: 4px; 
    box-shadow: 0 4px 15px rgba(0,184,255,0.1);
}

.message.deleted {
    opacity: 0.6;
    font-style: italic;
    border-color: var(--danger);
}

.sticker-msg { 
    width: 120px; 
    height: 120px; 
    object-fit: contain; 
    filter: drop-shadow(0 0 10px rgba(0,255,157,0.5)); 
}

/* Delete button on message */
.message-actions {
    position: absolute;
    top: -10px;
    right: 0;
    display: none;
    gap: 5px;
    background: var(--darker);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: 3px 8px;
    z-index: 5;
}

.message:hover .message-actions {
    display: flex;
}

.delete-msg-btn {
    background: transparent;
    border: none;
    color: var(--danger);
    cursor: pointer;
    font-size: 12px;
}

/* Input Area */
.input-container { 
    padding: 12px 20px; 
    border-top: 1px solid var(--glass-border); 
    position: relative; 
}

.input-wrapper { 
    display: flex; 
    gap: 10px; 
    align-items: center; 
    background: rgba(0,0,0,0.5); 
    border: 1px solid var(--glass-border); 
    border-radius: 30px; 
    padding: 5px 5px 5px 15px; 
}

.icon-btn { 
    background: transparent; 
    border: none; 
    color: var(--primary); 
    font-size: 20px; 
    cursor: pointer; 
    padding: 0 10px; 
    transition: 0.2s; 
    height: 40px;
}

.icon-btn:hover { 
    color: var(--secondary); 
    text-shadow: 0 0 10px var(--secondary);
}

.input-wrapper input { 
    flex: 1; 
    background: transparent; 
    border: none; 
    color: var(--light); 
    font-size: 16px; 
    padding: 10px 0;
}

.input-wrapper input:focus { 
    outline: none; 
}

#send-btn { 
    background: var(--primary); 
    color: #000; 
    border: none; 
    width: 40px; 
    height: 40px; 
    border-radius: 50%; 
    display: flex; 
    justify-content: center; 
    align-items: center; 
    cursor: pointer; 
    font-size: 16px; 
    transition: 0.2s; 
    box-shadow: 0 0 15px var(--glow);
}

#send-btn:hover { 
    background: var(--secondary); 
    box-shadow: 0 0 15px var(--secondary);
}

/* --- REPLY SYSTEM UI --- */
.reply-preview {
    display: flex; 
    justify-content: space-between; 
    align-items: center;
    background: rgba(0, 255, 157, 0.1); 
    border-left: 4px solid var(--primary);
    padding: 10px; 
    margin-bottom: 10px; 
    border-radius: 4px;
    backdrop-filter: blur(5px);
}

.reply-content { 
    display: flex; 
    flex-direction: column; 
    overflow: hidden; 
}

.reply-name { 
    color: var(--primary); 
    font-size: 12px; 
    font-weight: bold; 
}

.reply-text { 
    color: var(--light); 
    font-size: 13px; 
    white-space: nowrap; 
    overflow: hidden; 
    text-overflow: ellipsis; 
    opacity: 0.8; 
}

.cancel-reply-btn { 
    background: transparent; 
    border: none; 
    color: var(--danger); 
    cursor: pointer; 
    padding: 5px; 
}

.quoted-message {
    background: rgba(0,0,0,0.4); 
    border-left: 3px solid var(--primary);
    padding: 5px 10px; 
    border-radius: 4px; 
    margin-bottom: 5px; 
    cursor: pointer;
}

.message.received .quoted-message { 
    border-left-color: var(--secondary); 
}

.quoted-name { 
    display: block; 
    font-size: 11px; 
    font-weight: bold; 
    color: var(--primary); 
}

.message.received .quoted-name { 
    color: var(--secondary); 
}

.quoted-text { 
    font-size: 12px; 
    opacity: 0.8; 
}

/* --- VOICE RECORDING UI --- */
.recording-ui {
    display: flex; 
    align-items: center; 
    justify-content: space-between;
    background: rgba(0,0,0,0.7); 
    border: 1px solid var(--danger);
    border-radius: 30px; 
    padding: 5px 15px; 
    width: 100%; 
    box-shadow: 0 0 15px rgba(255,0,85,0.3);
}

.recording-indicator { 
    display: flex; 
    align-items: center; 
    gap: 8px; 
    color: var(--danger); 
    font-weight: bold; 
    text-shadow: 0 0 5px var(--danger);
}

.red-dot { 
    width: 10px; 
    height: 10px; 
    background: var(--danger); 
    border-radius: 50%; 
    animation: pulse-red 1s infinite; 
}

#recording-time { 
    font-family: 'Orbitron', monospace; 
    font-size: 14px; 
}

@keyframes pulse-red {
    0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(255, 0, 85, 0.7); }
    70% { transform: scale(1); box-shadow: 0 0 0 10px rgba(255, 0, 85, 0); }
    100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(255, 0, 85, 0); }
}

/* Sticker Picker Box */
.sticker-picker {
    position: absolute; 
    bottom: 75px; 
    left: 20px; 
    width: 320px; 
    max-height: 250px;
    border: 1px solid var(--glass-border); 
    border-radius: 12px;
    overflow-y: auto; 
    display: grid; 
    grid-template-columns: repeat(4, 1fr); 
    gap: 15px; 
    padding: 15px;
    box-shadow: 0 -5px 25px rgba(0,0,0,0.8); 
    z-index: 1000;
}

.sticker-item { 
    width: 100%; 
    cursor: pointer; 
    transition: 0.2s; 
    border-radius: 8px; 
    padding: 5px; 
}

.sticker-item:hover { 
    transform: scale(1.15); 
    background: rgba(0, 255, 157, 0.2); 
}

/* Flash Messages */
.flash-message { 
    position: fixed; 
    top: 20px; 
    right: 20px; 
    padding: 15px 25px; 
    background: var(--darker); 
    backdrop-filter: blur(10px); 
    border: 1px solid var(--primary); 
    color: var(--primary); 
    z-index: 9999; 
    border-radius: 8px; 
    box-shadow: 0 4px 15px rgba(0,255,157,0.2); 
    animation: slideIn 0.3s ease;
}

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

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

.flash-message.error { 
    border-color: var(--danger); 
    color: var(--danger); 
    box-shadow: 0 4px 15px rgba(255,0,85,0.2);
}

.flash-message.success { 
    border-color: var(--primary); 
    color: var(--primary); 
}

/* Scrollbar */
::-webkit-scrollbar { 
    width: 6px; 
}

::-webkit-scrollbar-track { 
    background: transparent; 
}

::-webkit-scrollbar-thumb { 
    background: rgba(0, 255, 157, 0.5); 
    border-radius: 10px; 
}

::-webkit-scrollbar-thumb:hover { 
    background: var(--primary); 
}

/* =========================================
   MOBILE RESPONSIVENESS
========================================= */
@media (max-width: 768px) {
    /* Base Container */
    .chat-container { 
        position: relative; 
        width: 100%; 
        height: 100dvh; 
        overflow: hidden; 
    }

    /* Sidebar takes full screen */
    .sidebar { 
        width: 100%; 
        position: absolute; 
        height: 100%; 
        left: 0; 
        top: 0; 
        z-index: 10; 
        border-right: none;
    }
    
    /* Chat Area slides over */
    .chat-area { 
        position: absolute; 
        width: 100%; 
        height: 100%; 
        left: 0; 
        top: 0; 
        transform: translateX(100%); 
        transition: transform 0.3s cubic-bezier(0.25, 0.8, 0.25, 1); 
        background: rgba(5, 8, 8, 0.95) !important; 
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        z-index: 20; 
    }
    
    .chat-area.active-mobile { 
        transform: translateX(0); 
    }
    
    /* Header Alignment Fixes */
    .chat-header { 
        padding: 10px 15px; 
        gap: 12px; 
    }
    
    .mobile-back-btn { 
        display: block; 
        padding: 5px 10px 5px 0;
        font-size: 22px;
    }
    
    .chat-header-avatar {
        width: 36px;
        height: 36px;
    }
    
    .chat-header h2 {
        font-size: 16px;
    }

    /* Messages Spacing */
    .messages-container { 
        padding: 15px 10px; 
    }
    
    .message { 
        max-width: 90%; 
        font-size: 15px; 
        padding: 10px 14px; 
    }
    
    /* Input Area Alignment */
    .input-container { 
        padding: 8px 10px 15px 10px; 
    }
    
    .input-wrapper { 
        padding: 4px 4px 4px 10px; 
    }
    
    .input-wrapper input { 
        padding: 10px 0; 
        font-size: 16px;
    }
    
    .icon-btn { 
        font-size: 18px; 
        padding: 0 8px; 
    }
    
    /* Sticker Picker stretches full width */
    .sticker-picker { 
        width: 100%; 
        left: 0; 
        border-radius: 20px 20px 0 0; 
        bottom: 70px; 
        border-left: none; 
        border-right: none;
        background: rgba(5, 8, 8, 0.98);
    }
    
    /* Auth & Profile Fixes */
    .auth-card { 
        padding: 30px 20px; 
        border-radius: 0; 
        border: none; 
        background: rgba(5, 8, 8, 0.8); 
    }
    
    .glitch-title { 
        font-size: 28px; 
    }
}

.text-danger {
    color: var(--danger) !important;
}

.subtitle {
    color: var(--secondary);
    font-size: 14px;
    margin-top: 5px;
}
/* Add New tab ke users shuruat mein hide rahenge */
#add-tab .user-item {
    display: none;
}
.notification-badge {
    position: absolute;
    top: 0;
    right: 0;
    color: var(--primary);
    font-size: 20px;
    animation: pulse 1s infinite;
}

@keyframes pulse {
    0% { opacity: 1; }
    50% { opacity: 0.5; }
    100% { opacity: 1; }
}