/* CYBERPUNK CHAT - Black/White/Green Theme */

:root {
    --bg-primary: #000000;
    --bg-secondary: #0a0a0a;
    --bg-tertiary: #111111;
    --text-primary: #00ff00;
    --text-secondary: #00cc00;
    --text-dim: #008800;
    --text-white: #ffffff;
    --text-gray: #888888;
    --border-color: #00ff00;
    --border-dim: #004400;
    --error-color: #ff3333;
    --warning-color: #ffff00;
    --scanline-color: rgba(0, 255, 0, 0.03);
}

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

html, body {
    height: 100%;
    width: 100%;
    font-family: 'Courier New', 'Consolas', monospace;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    overflow: hidden;
}

/* Scanline Effect */
body::before {
    content: "";
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: repeating-linear-gradient(
        0deg,
        var(--scanline-color),
        var(--scanline-color) 1px,
        transparent 1px,
        transparent 2px
    );
    pointer-events: none;
    z-index: 9999;
}

/* Screen Management */
.screen {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.screen.active {
    display: flex;
}

/* Login Screen */
#login-screen {
    justify-content: center;
    align-items: center;
    background: radial-gradient(ellipse at center, var(--bg-secondary) 0%, var(--bg-primary) 100%);
    z-index: 100;
}

.login-container {
    width: 100%;
    max-width: 500px;
    padding: 2rem;
}

/* Glitch Header */
.glitch-header {
    text-align: center;
    margin-bottom: 2rem;
}

.glitch {
    font-size: 2.5rem;
    font-weight: bold;
    color: var(--text-primary);
    text-shadow: 2px 0 var(--text-dim), -2px 0 var(--text-white);
    animation: glitch 1s infinite;
    position: relative;
}

@keyframes glitch {
    0% { text-shadow: 2px 0 var(--text-dim), -2px 0 var(--text-white); }
    25% { text-shadow: -2px 0 var(--text-dim), 2px 0 var(--text-white); }
    50% { text-shadow: 2px 0 var(--text-white), -2px 0 var(--text-dim); }
    75% { text-shadow: -2px 0 var(--text-white), 2px 0 var(--text-dim); }
    100% { text-shadow: 2px 0 var(--text-dim), -2px 0 var(--text-white); }
}

.subtitle {
    color: var(--text-dim);
    font-size: 0.9rem;
    margin-top: 0.5rem;
    letter-spacing: 2px;
}

/* Terminal Window */
.terminal-window {
    border: 1px solid var(--border-color);
    background: var(--bg-secondary);
    box-shadow: 0 0 20px rgba(0, 255, 0, 0.2);
}

.terminal-header {
    background: var(--border-dim);
    padding: 0.5rem 1rem;
    border-bottom: 1px solid var(--border-color);
}

.terminal-title {
    color: var(--text-primary);
    font-size: 0.85rem;
    letter-spacing: 1px;
}

.terminal-body {
    padding: 1.5rem;
}

/* Form Styles */
.input-group {
    margin-bottom: 1.2rem;
}

.input-group label {
    display: block;
    color: var(--text-secondary);
    font-size: 0.85rem;
    margin-bottom: 0.5rem;
    letter-spacing: 1px;
}

.input-group input {
    width: 100%;
    padding: 0.75rem;
    background: var(--bg-primary);
    border: 1px solid var(--border-dim);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 1rem;
    outline: none;
    transition: border-color 0.3s, box-shadow 0.3s;
}

.input-group input:focus {
    border-color: var(--border-color);
    box-shadow: 0 0 10px rgba(0, 255, 0, 0.3);
}

.input-group input::placeholder {
    color: var(--text-dim);
}

/* Buttons */
.button-group {
    display: flex;
    gap: 0.75rem;
    margin-top: 1.5rem;
}

.btn {
    flex: 1;
    padding: 0.75rem 1rem;
    font-family: inherit;
    font-size: 0.67rem;
    font-weight: bold;
    cursor: pointer;
    border: 1px solid var(--border-color);
    background: var(--bg-primary);
    color: var(--text-primary);
    transition: all 0.3s;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.btn:hover {
    background: var(--border-color);
    color: var(--bg-primary);
    box-shadow: 0 0 15px rgba(0, 255, 0, 0.5);
}

.btn-primary {
    background: var(--border-dim);
}

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

.btn-secondary:hover {
    background: var(--text-gray);
    color: var(--bg-primary);
}

.btn-anon {
    border-color: var(--text-dim);
    color: var(--text-dim);
}

.btn-anon:hover {
    background: var(--text-dim);
    color: var(--bg-primary);
}

/* Message Area */
.message-area {
    margin-top: 1rem;
    padding: 0.75rem;
    border: 1px solid var(--border-dim);
    background: var(--bg-primary);
    min-height: 40px;
    font-size: 0.85rem;
}

.message-area.error {
    border-color: var(--error-color);
    color: var(--error-color);
}

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

/* Footer */
.footer-text {
    text-align: center;
    margin-top: 1.5rem;
    color: var(--text-dim);
    font-size: 0.75rem;
}

.footer-text p {
    margin: 0.25rem 0;
}

/* ==============================
   CHAT SCREEN - FIXED LAYOUT
   ============================== */
#chat-screen {
    z-index: 50;
    width: 100%;
    height: 100%;
}

#chat-screen.active {
    display: flex;
    flex-direction: column;
}

.chat-layout {
    display: flex;
    width: 100%;
    height: 100%;
}

/* Sidebar - Fixed width, scrollable users list */
.sidebar {
    width: 220px;
    min-width: 220px;
    border-right: 1px solid var(--border-dim);
    background: var(--bg-secondary);
    display: flex;
    flex-direction: column;
}

.sidebar-header {
    padding: 1rem;
    border-bottom: 1px solid var(--border-dim);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-shrink: 0;
}

.sidebar-header h2 {
    font-size: 0.9rem;
    color: var(--text-secondary);
    letter-spacing: 1px;
}

.count {
    background: var(--border-dim);
    color: var(--text-primary);
    padding: 0.2rem 0.5rem;
    font-size: 0.75rem;
    border: 1px solid var(--border-color);
}

/* Scrollable users list */
.users-list {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    padding: 0.5rem;
    min-height: 0;
}

.user-item {
    padding: 0.5rem 0.75rem;
    margin: 0.25rem 0;
    border: 1px solid transparent;
    cursor: pointer;
    transition: all 0.3s;
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.user-item:hover {
    border-color: var(--border-dim);
    background: var(--bg-tertiary);
}

.user-item.online {
    color: var(--text-primary);
}

.user-item.offline {
    color: var(--text-gray);
}

.user-item.anon::before {
    content: "[A]";
    color: var(--text-dim);
    font-size: 0.7rem;
}

.user-status {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--text-dim);
}

.user-item.online .user-status {
    background: var(--text-primary);
    box-shadow: 0 0 5px var(--text-primary);
}

/* Sidebar footer - fixed at bottom */
.sidebar-footer {
    padding: 1rem;
    border-top: 1px solid var(--border-dim);
    flex-shrink: 0;
}

.user-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 0.5rem;
}

.current-nick {
    color: var(--text-secondary);
    font-size: 0.85rem;
    word-break: break-word;
}

.btn-small {
    padding: 0.3rem 0.6rem;
    font-family: inherit;
    font-size: 0.7rem;
    background: var(--bg-primary);
    border: 1px solid var(--border-dim);
    color: var(--text-dim);
    cursor: pointer;
    transition: all 0.3s;
    white-space: nowrap;
}

.btn-small:hover {
    border-color: var(--error-color);
    color: var(--error-color);
}

/* Main Chat Area */
.chat-main {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-width: 0;
    height: 100%;
}

/* Chat Header - Fixed */
.chat-header {
    padding: 1rem;
    border-bottom: 1px solid var(--border-dim);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--bg-secondary);
    flex-shrink: 0;
}

.channel-info {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.channel-name {
    font-size: 1rem;
    color: var(--text-secondary);
    letter-spacing: 1px;
}

.connection-status {
    font-size: 0.75rem;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.3rem;
}

.connection-status::before {
    content: "";
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--text-primary);
    animation: pulse 2s infinite;
}

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

.connection-status.disconnected::before {
    background: var(--error-color);
}

.connection-status.disconnected {
    color: var(--error-color);
}

.chat-actions {
    display: flex;
    gap: 0.5rem;
}

/* Scrollable Messages Container */
.messages-container {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    padding: 1rem;
    background: var(--bg-primary);
    min-height: 0;
}

.messages-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    min-height: 0;
}

.message {
    padding: 0.5rem 0.75rem;
    border-left: 2px solid var(--border-dim);
    background: var(--bg-secondary);
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateX(-10px); }
    to { opacity: 1; transform: translateX(0); }
}

.message.anon {
    border-left-color: var(--text-dim);
}

.message.own {
    border-left-color: var(--text-primary);
    background: var(--bg-tertiary);
}

.message-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.3rem;
    font-size: 0.75rem;
}

.message-nick {
    color: var(--text-secondary);
    font-weight: bold;
}

.message.anon .message-nick::before {
    content: "[ANON] ";
    color: var(--text-dim);
}

.message-time {
    color: var(--text-dim);
}

.message-content {
    color: var(--text-white);
    font-size: 0.9rem;
    line-height: 1.4;
    word-break: break-word;
}

/* System Message */
.message.system {
    border-left-color: var(--warning-color);
    background: transparent;
}

.message.system .message-content {
    color: var(--warning-color);
    font-style: italic;
}

/* Chat Input - Fixed at bottom */
.chat-input-area {
    padding: 1rem;
    border-top: 1px solid var(--border-dim);
    background: var(--bg-secondary);
    flex-shrink: 0;
}

.input-wrapper {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--border-dim);
    background: var(--bg-primary);
}

.input-wrapper:focus-within {
    border-color: var(--border-color);
    box-shadow: 0 0 10px rgba(0, 255, 0, 0.2);
}

.prompt {
    color: var(--text-primary);
    font-weight: bold;
}

#message-input {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--text-white);
    font-family: inherit;
    font-size: 0.95rem;
    outline: none;
    min-width: 0;
}

#message-input::placeholder {
    color: var(--text-dim);
}

.btn-send {
    padding: 0.5rem 1rem;
    font-family: inherit;
    font-size: 0.8rem;
    background: var(--border-dim);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    cursor: pointer;
    transition: all 0.3s;
    white-space: nowrap;
    flex-shrink: 0;
}

.btn-send:hover {
    background: var(--border-color);
    color: var(--bg-primary);
}

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
    background: var(--border-dim);
    border: 1px solid var(--border-color);
}

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

/* Users list scrollbar */
.users-list::-webkit-scrollbar {
    width: 6px;
}

/* Messages container scrollbar */
.messages-container::-webkit-scrollbar {
    width: 8px;
}

/* Responsive */
@media (max-width: 768px) {
    .sidebar {
        width: 180px;
        min-width: 180px;
    }
    
    .glitch {
        font-size: 1.8rem;
    }
    
    .button-group {
        flex-direction: column;
    }
}

@media (max-width: 600px) {
    .sidebar {
        display: none;
    }
    
    .chat-layout {
        flex-direction: column;
    }
}