/* ===== CSS Variables ===== */
:root {
    /* Light Theme Colors */
    --bg-primary: #f5f7fa;
    --bg-secondary: #ffffff;
    --bg-tertiary: #e8ecf1;
    --text-primary: #2c3e50;
    --text-secondary: #5a6c7d;
    --text-tertiary: #95a5a6;
    --border-color: #dfe4ea;
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.15);
    
    /* Accent Colors */
    --accent-primary: #3498db;
    --accent-primary-hover: #2980b9;
    --accent-success: #2ecc71;
    --accent-warning: #f39c12;
    --accent-danger: #e74c3c;
    
    /* Message Bubble Colors */
    --msg-received-bg: #ffffff;
    --msg-received-text: #2c3e50;
    --msg-sent-bg: #3498db;
    --msg-sent-text: #ffffff;
    --msg-system-bg: #ecf0f1;
    --msg-system-text: #7f8c8d;
    
    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-round: 50%;
    
    /* Sidebar */
    --sidebar-width: 320px;
    --sidebar-collapsed-width: 0px;
}

/* Dark Theme */
body.dark-theme {
    --bg-primary: #1a1d23;
    --bg-secondary: #22272e;
    --bg-tertiary: #2d333b;
    --text-primary: #e6edf3;
    --text-secondary: #adbac7;
    --text-tertiary: #768390;
    --border-color: #373e47;
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.5);
    
    --msg-received-bg: #2d333b;
    --msg-received-text: #e6edf3;
    --msg-sent-bg: #1f6feb;
    --msg-sent-text: #ffffff;
    --msg-system-bg: #373e47;
    --msg-system-text: #768390;
}

/* ===== Reset & Base Styles ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    height: 100vh;
    overflow: hidden;
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* ===== Header ===== */
.header {
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: var(--spacing-md) var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: var(--shadow-sm);
    z-index: 100;
}

.header-left {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.logo-icon {
    width: 32px;
    height: 32px;
    color: var(--accent-primary);
    stroke-width: 2;
}

.header h1 {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
}

.header-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.icon-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: var(--spacing-sm);
    border-radius: var(--radius-md);
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.icon-btn svg {
    width: 20px;
    height: 20px;
    stroke-width: 2;
}

.connection-status {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--bg-tertiary);
    border-radius: var(--radius-lg);
    font-size: 14px;
    font-weight: 500;
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: var(--radius-round);
    background-color: var(--text-tertiary);
    transition: background-color 0.3s ease;
}

.connection-status.disconnected .status-dot {
    background-color: var(--text-tertiary);
}

.connection-status.connecting .status-dot {
    background-color: var(--accent-warning);
    animation: pulse 1.5s ease-in-out infinite;
}

.connection-status.connected .status-dot {
    background-color: var(--accent-success);
}

.connection-status.error .status-dot {
    background-color: var(--accent-danger);
}

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

/* ===== Main Container ===== */
.main-container {
    display: flex;
    height: calc(100vh - 65px);
    overflow: hidden;
}

/* ===== Sidebar ===== */
.sidebar {
    width: var(--sidebar-width);
    background-color: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    transition: margin-left 0.3s ease;
    position: relative;
    overflow-y: auto;
    overflow-x: hidden;
}

.sidebar.collapsed {
    margin-left: calc(-1 * var(--sidebar-width));
}

.sidebar-toggle {
    position: absolute;
    top: var(--spacing-md);
    right: calc(-32px);
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-left: none;
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    width: 32px;
    height: 40px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    transition: all 0.2s ease;
    z-index: 10;
}

.sidebar-toggle:hover {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
}

.sidebar-toggle svg {
    width: 16px;
    height: 16px;
    stroke-width: 2;
    transition: transform 0.3s ease;
}

.sidebar.collapsed .sidebar-toggle svg {
    transform: rotate(180deg);
}

.sidebar-content {
    padding: var(--spacing-lg);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.sidebar-section {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.sidebar-section h3 {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: var(--spacing-xs);
}

/* ===== Form Elements ===== */
.input-field {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 14px;
    transition: all 0.2s ease;
}

.input-field:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
}

label {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
}

.radio-group {
    display: flex;
    gap: var(--spacing-md);
    margin-top: var(--spacing-xs);
}

.radio-group-inline {
    display: flex;
    gap: var(--spacing-md);
}

.compact-options {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

.compact-label {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
}

.radio-label {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    cursor: pointer;
    color: var(--text-primary);
    font-weight: 400;
}

.radio-label input[type="radio"] {
    cursor: pointer;
    accent-color: var(--accent-primary);
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    cursor: pointer;
    color: var(--text-primary);
    font-size: 14px;
    font-weight: 400;
    padding: var(--spacing-xs) 0;
}

.checkbox-group {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-sm);
}

.checkbox-label input[type="checkbox"] {
    cursor: pointer;
    accent-color: var(--accent-primary);
    width: 16px;
    height: 16px;
}

/* ===== Buttons ===== */
.btn {
    padding: var(--spacing-sm) var(--spacing-md);
    border: none;
    border-radius: var(--radius-md);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn svg {
    width: 18px;
    height: 18px;
    stroke-width: 2;
}

.btn-primary {
    background-color: var(--accent-primary);
    color: white;
}

.btn-primary:hover:not(:disabled) {
    background-color: var(--accent-primary-hover);
    box-shadow: var(--shadow-md);
}

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

.btn-secondary:hover:not(:disabled) {
    background-color: var(--border-color);
}

.btn-block {
    width: 100%;
}

.btn-sm {
    padding: 6px 12px;
    font-size: 13px;
}

.button-group {
    display: flex;
    gap: var(--spacing-sm);
}

/* ===== Port Info ===== */
.port-info {
    background-color: var(--bg-tertiary);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    font-size: 12px;
    color: var(--text-secondary);
    margin-top: var(--spacing-sm);
}

/* ===== Statistics ===== */
.stats {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.stat-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm);
    background-color: var(--bg-tertiary);
    border-radius: var(--radius-md);
}

.stat-label {
    font-size: 13px;
    color: var(--text-secondary);
    font-weight: 500;
}

.stat-value {
    font-size: 14px;
    color: var(--text-primary);
    font-weight: 600;
    font-family: 'Consolas', 'Monaco', monospace;
}

/* ===== Main Content ===== */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

/* ===== Shortcut Bar ===== */
.shortcut-bar {
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: var(--spacing-md) var(--spacing-lg);
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
    align-items: center;
    min-height: 60px;
}

.shortcut-bar:empty::after {
    content: 'No shortcuts configured. Click "Manage Shortcuts" to add some.';
    color: var(--text-tertiary);
    font-size: 14px;
    font-style: italic;
}

.shortcut-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.shortcut-btn:hover {
    background-color: var(--accent-primary);
    color: white;
    border-color: var(--accent-primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.shortcut-btn:active {
    transform: translateY(0);
}

.shortcut-btn.clicked {
    animation: btnClick 0.3s ease;
}

@keyframes btnClick {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(0.95); }
}

/* ===== Chat Container ===== */
.chat-container {
    flex: 1;
    overflow-y: auto;
    background-color: var(--bg-primary);
    padding: var(--spacing-lg);
}

.chat-messages {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    max-width: 100%;
    margin: 0 auto;
}

/* ===== Message Bubbles ===== */
.message {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    animation: messageSlideIn 0.3s ease;
    width: 100%;
}

@keyframes messageSlideIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.message.received {
    flex-direction: row;
}

.message.sent {
    flex-direction: row-reverse;
}

.message-bubble {
    max-width: 85%;
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    word-wrap: break-word;
    position: relative;
}

.message.received .message-bubble {
    background-color: var(--msg-received-bg);
    color: var(--msg-received-text);
    border-bottom-left-radius: var(--radius-sm);
}

.message.sent .message-bubble {
    background-color: var(--msg-sent-bg);
    color: var(--msg-sent-text);
    border-bottom-right-radius: var(--radius-sm);
}

.message-content {
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
    font-size: 13px;
    line-height: 1.5;
    white-space: pre-wrap;
}

.message-timestamp {
    font-size: 11px;
    opacity: 0.6;
    margin-top: var(--spacing-xs);
    display: block;
}

.system-message {
    text-align: center;
    padding: var(--spacing-lg);
    color: var(--msg-system-text);
    background-color: var(--msg-system-bg);
    border-radius: var(--radius-lg);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
}

.system-message svg {
    width: 48px;
    height: 48px;
    stroke-width: 1.5;
    opacity: 0.5;
}

.system-message p {
    margin: 0;
}

.system-message .small {
    font-size: 13px;
    opacity: 0.7;
}

/* ===== Input Panel ===== */
.input-panel {
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: var(--spacing-md) var(--spacing-lg);
}

.input-container {
    display: flex;
    gap: var(--spacing-sm);
    align-items: flex-end;
}

.command-input {
    flex: 1;
    padding: var(--spacing-md);
    background-color: var(--bg-tertiary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    color: var(--text-primary);
    font-size: 14px;
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
    resize: none;
    min-height: 44px;
    max-height: 150px;
    transition: all 0.2s ease;
}

.command-input:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
}

.command-input:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.send-btn {
    width: 44px;
    height: 44px;
    background-color: var(--accent-primary);
    border: none;
    border-radius: var(--radius-round);
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    flex-shrink: 0;
}

.send-btn:hover:not(:disabled) {
    background-color: var(--accent-primary-hover);
    transform: scale(1.05);
    box-shadow: var(--shadow-md);
}

.send-btn:active:not(:disabled) {
    transform: scale(0.95);
}

.send-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.send-btn svg {
    width: 20px;
    height: 20px;
    stroke-width: 2;
}

.input-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: var(--spacing-xs);
    font-size: 12px;
    color: var(--text-tertiary);
}

.char-count {
    font-family: 'Consolas', 'Monaco', monospace;
}

.input-hint {
    font-style: italic;
}

/* ===== Modal ===== */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    align-items: center;
    justify-content: center;
    animation: fadeIn 0.2s ease;
}

.modal.active {
    display: flex;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.modal-content {
    background-color: var(--bg-secondary);
    border-radius: var(--radius-xl);
    width: 90%;
    max-width: 700px;
    max-height: 85vh;
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-lg);
    animation: slideUp 0.3s ease;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.modal-header {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h2 {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: var(--spacing-sm);
    border-radius: var(--radius-md);
    transition: all 0.2s ease;
}

.modal-close:hover {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
}

.modal-close svg {
    width: 24px;
    height: 24px;
    stroke-width: 2;
}

.modal-body {
    padding: var(--spacing-lg);
    overflow-y: auto;
    flex: 1;
}

.modal-footer {
    padding: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-sm);
}

/* ===== Shortcuts List ===== */
.shortcuts-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.shortcut-item {
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.shortcut-item-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.shortcut-item-actions {
    display: flex;
    gap: var(--spacing-xs);
}

.shortcut-item input {
    width: 100%;
    padding: var(--spacing-sm);
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 13px;
}

.shortcut-item label {
    font-size: 12px;
    color: var(--text-secondary);
    margin-bottom: 2px;
}

/* ===== Notifications ===== */
.notifications {
    position: fixed;
    top: var(--spacing-lg);
    right: var(--spacing-lg);
    z-index: 2000;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.notification {
    background-color: var(--bg-secondary);
    border-radius: var(--radius-md);
    padding: var(--spacing-md) var(--spacing-lg);
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    min-width: 300px;
    animation: slideInRight 0.3s ease;
}

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

.notification.success {
    border-left: 4px solid var(--accent-success);
}

.notification.error {
    border-left: 4px solid var(--accent-danger);
}

.notification.warning {
    border-left: 4px solid var(--accent-warning);
}

.notification.info {
    border-left: 4px solid var(--accent-primary);
}

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

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

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

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

/* ===== Responsive Design ===== */
@media (max-width: 768px) {
    :root {
        --sidebar-width: 280px;
    }
    
    .header h1 {
        font-size: 16px;
    }
    
    .connection-status .status-text {
        display: none;
    }
    
    .sidebar {
        position: absolute;
        height: 100%;
        z-index: 50;
        box-shadow: var(--shadow-lg);
    }
    
    .message-bubble {
        max-width: 85%;
    }
    
    .shortcut-bar {
        padding: var(--spacing-sm);
    }
    
    .input-hint {
        display: none;
    }
}