/* WhatsApp Web Color Palette */
:root {
    --whatsapp-green: #00a884;
    --whatsapp-green-dark: #008069;
    --whatsapp-green-light: #25d366;
    --whatsapp-bg: #111b21;
    --whatsapp-panel-bg: #202c33;
    --whatsapp-chat-bg: #0c1317;
    --whatsapp-message-out: #005c4b;
    --whatsapp-message-in: #202c33;
    --whatsapp-text: #e9edef;
    --whatsapp-text-secondary: #8696a0;
    --whatsapp-border: #2a3942;
    --whatsapp-hover: #2a3942;
    --whatsapp-blue: #53bdeb;
    --whatsapp-purple: #6b46c1;
    --whatsapp-orange: #f59e0b;
    --whatsapp-red: #ef4444;
}

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

body {
    font-family: 'Segoe UI', Helvetica Neue, Helvetica, Lucida Grande, Arial, sans-serif;
    background: var(--whatsapp-bg);
    color: var(--whatsapp-text);
    height: 100vh;
    overflow: hidden;
    line-height: 1.5;
}

.app-container {
    display: flex;
    height: 100vh;
    width: 100%;
}

/* Sidebar Styles */
.sidebar {
    width: 380px;
    background: var(--whatsapp-panel-bg);
    border-right: 1px solid var(--whatsapp-border);
    display: flex;
    flex-direction: column;
    min-width: 300px;
}

.sidebar-header {
    padding: 10px 16px;
    background: var(--whatsapp-panel-bg);
    border-bottom: 1px solid var(--whatsapp-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.profile {
    display: flex;
    align-items: center;
    gap: 15px;
    flex: 1;
}

.profile-pic {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--whatsapp-green);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: white;
    flex-shrink: 0;
}

.profile-info {
    overflow: hidden;
}

.profile-info h3 {
    margin: 0;
    font-size: 16px;
    font-weight: 600;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.profile-info p {
    margin: 2px 0 0 0;
    font-size: 13px;
    color: var(--whatsapp-text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.btn-icon {
    background: none;
    border: none;
    color: var(--whatsapp-text-secondary);
    font-size: 20px;
    cursor: pointer;
    padding: 8px;
    border-radius: 50%;
    transition: background 0.2s;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-icon:hover {
    background: var(--whatsapp-hover);
}

.sidebar-menu {
    padding: 20px 0;
    border-bottom: 1px solid var(--whatsapp-border);
}

.menu-item {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 12px 24px;
    color: var(--whatsapp-text);
    text-decoration: none;
    transition: background 0.2s;
    border-left: 3px solid transparent;
}

.menu-item:hover {
    background: var(--whatsapp-hover);
}

.menu-item.active {
    background: var(--whatsapp-hover);
    border-left: 3px solid var(--whatsapp-green);
}

.menu-item i {
    width: 24px;
    text-align: center;
    font-size: 18px;
    color: var(--whatsapp-text-secondary);
    flex-shrink: 0;
}

.menu-item.active i {
    color: var(--whatsapp-green);
}

.menu-item span {
    font-size: 15px;
    font-weight: 500;
}

.sidebar-sessions {
    padding: 20px 16px;
    flex-grow: 1;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
}

.session-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 15px;
}

.session-header h4 {
    margin: 0;
    color: var(--whatsapp-text-secondary);
    font-size: 14px;
    font-weight: 500;
    text-transform: uppercase;
    display: flex;
    align-items: center;
    gap: 8px;
}

#sessions-list {
    flex-grow: 1;
    overflow-y: auto;
}

.session-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px;
    border-radius: 8px;
    margin-bottom: 5px;
    transition: background 0.2s;
    cursor: pointer;
    position: relative;
}

.session-item:hover {
    background: var(--whatsapp-hover);
}

.session-item.loading {
    justify-content: center;
    opacity: 0.7;
}

.session-item.empty {
    justify-content: center;
    color: var(--whatsapp-text-secondary);
    text-align: center;
    padding: 20px;
}

.session-item.empty i {
    font-size: 24px;
    margin-bottom: 10px;
    display: block;
}

.session-item.empty span {
    font-size: 14px;
}

.session-status {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    flex-shrink: 0;
}

.session-info {
    flex-grow: 1;
    overflow: hidden;
}

.session-info strong {
    display: block;
    font-size: 14px;
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.session-info small {
    font-size: 12px;
    color: var(--whatsapp-text-secondary);
    display: block;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.session-ready {
    color: var(--whatsapp-green);
    font-size: 12px;
}

.sidebar-footer {
    padding: 15px;
    border-top: 1px solid var(--whatsapp-border);
    background: var(--whatsapp-panel-bg);
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 12px;
    color: var(--whatsapp-text-secondary);
}

.server-status {
    display: flex;
    align-items: center;
    gap: 8px;
}

.status-indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

.status-indicator.connected {
    background: var(--whatsapp-green);
}

.status-indicator.disconnected {
    background: var(--whatsapp-red);
}

.version {
    background: var(--whatsapp-border);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 11px;
    font-weight: 600;
}

/* Main Content */
.main-content {
    flex-grow: 1;
    padding: 20px;
    overflow-y: auto;
    background: var(--whatsapp-chat-bg);
    display: flex;
    flex-direction: column;
}

.content-header {
    margin-bottom: 30px;
}

.content-header h1 {
    margin: 0 0 5px 0;
    color: var(--whatsapp-text);
    font-size: 28px;
    font-weight: 300;
    display: flex;
    align-items: center;
    gap: 10px;
}

.content-header h1 i {
    color: var(--whatsapp-green);
}

.subtitle {
    color: var(--whatsapp-text-secondary);
    font-size: 14px;
    margin: 0 0 20px 0;
}

.header-actions {
    display: flex;
    gap: 10px;
    margin-top: 15px;
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background: var(--whatsapp-panel-bg);
    border-radius: 10px;
    padding: 20px;
    border: 1px solid var(--whatsapp-border);
    transition: transform 0.2s, box-shadow 0.2s;
    text-align: center;
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.stat-icon {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    margin: 0 auto 15px auto;
}

.stat-icon.green { background: rgba(0, 168, 132, 0.1); color: var(--whatsapp-green); }
.stat-icon.blue { background: rgba(66, 133, 244, 0.1); color: var(--whatsapp-blue); }
.stat-icon.purple { background: rgba(156, 39, 176, 0.1); color: var(--whatsapp-purple); }
.stat-icon.orange { background: rgba(245, 158, 11, 0.1); color: var(--whatsapp-orange); }

.stat-card h3 {
    margin: 0 0 5px 0;
    font-size: 32px;
    font-weight: 300;
    color: var(--whatsapp-text);
}

.stat-card p {
    margin: 0;
    color: var(--whatsapp-text-secondary);
    font-size: 14px;
}

/* Quick Actions */
.quick-actions {
    margin-bottom: 30px;
}

.quick-actions h2 {
    margin: 0 0 20px 0;
    color: var(--whatsapp-text);
    font-size: 20px;
    font-weight: 400;
    display: flex;
    align-items: center;
    gap: 10px;
}

.actions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.action-card {
    background: var(--whatsapp-panel-bg);
    border-radius: 10px;
    padding: 25px;
    text-decoration: none;
    color: var(--whatsapp-text);
    border: 1px solid var(--whatsapp-border);
    transition: all 0.2s;
    cursor: pointer;
    text-align: center;
    display: block;
}

.action-card:hover {
    background: var(--whatsapp-hover);
    border-color: var(--whatsapp-green);
    transform: translateY(-2px);
}

.action-icon {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: rgba(0, 168, 132, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    color: var(--whatsapp-green);
    margin: 0 auto 20px auto;
}

.action-card h4 {
    margin: 0 0 10px 0;
    font-size: 18px;
    font-weight: 500;
    color: var(--whatsapp-text);
}

.action-card p {
    margin: 0;
    color: var(--whatsapp-text-secondary);
    font-size: 14px;
    line-height: 1.5;
}

/* Recent Sessions */
.recent-sessions {
    margin-bottom: 30px;
}

.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
}

.section-header h2 {
    margin: 0;
    color: var(--whatsapp-text);
    font-size: 20px;
    font-weight: 400;
    display: flex;
    align-items: center;
    gap: 10px;
}

.section-actions {
    display: flex;
    gap: 10px;
}

.sessions-table {
    background: var(--whatsapp-panel-bg);
    border-radius: 10px;
    overflow: hidden;
    border: 1px solid var(--whatsapp-border);
    overflow-x: auto;
}

.sessions-table table {
    width: 100%;
    border-collapse: collapse;
    min-width: 800px;
}

.sessions-table th {
    background: var(--whatsapp-hover);
    padding: 15px;
    text-align: left;
    font-weight: 500;
    color: var(--whatsapp-text-secondary);
    font-size: 14px;
    border-bottom: 1px solid var(--whatsapp-border);
    white-space: nowrap;
}

.sessions-table td {
    padding: 15px;
    border-bottom: 1px solid var(--whatsapp-border);
    color: var(--whatsapp-text);
    vertical-align: middle;
}

.sessions-table tr:last-child td {
    border-bottom: none;
}

.sessions-table tr:hover td {
    background: var(--whatsapp-hover);
}

.loading-cell, .empty-cell {
    text-align: center;
    padding: 30px !important;
    color: var(--whatsapp-text-secondary);
}

.loading-cell i, .empty-cell i {
    font-size: 24px;
    margin-bottom: 10px;
    display: block;
}

/* Action Buttons */
.action-buttons {
    display: flex;
    gap: 5px;
    flex-wrap: nowrap;
}

.btn-small {
    padding: 6px 10px;
    border-radius: 4px;
    border: none;
    font-size: 12px;
    font-weight: 500;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 5px;
    transition: opacity 0.2s, transform 0.2s;
    min-width: 32px;
    height: 32px;
}

.btn-small:hover {
    opacity: 0.9;
    transform: translateY(-1px);
}

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

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

.btn-secondary {
    background: var(--whatsapp-blue);
    color: white;
}

.btn-info {
    background: var(--whatsapp-blue);
    color: white;
}

.btn-warning {
    background: var(--whatsapp-orange);
    color: white;
}

.btn-danger {
    background: var(--whatsapp-red);
    color: white;
}

/* Badges */
.badge {
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    display: inline-block;
}

.badge-qr {
    background: rgba(66, 133, 244, 0.1);
    color: var(--whatsapp-blue);
}

.badge-phone {
    background: rgba(156, 39, 176, 0.1);
    color: var(--whatsapp-purple);
}

.status-badge {
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 600;
    display: inline-block;
}

.status-ready {
    background: rgba(76, 175, 80, 0.1);
    color: #4caf50;
}

.status-registering {
    background: rgba(255, 193, 7, 0.1);
    color: #ffc107;
}

.status-connecting {
    background: rgba(33, 150, 243, 0.1);
    color: #2196f3;
}

.status-qr_generated {
    background: rgba(156, 39, 176, 0.1);
    color: #9c27b0;
}

.status-failed {
    background: rgba(244, 67, 54, 0.1);
    color: #f44336;
}

.status-logged_out {
    background: rgba(158, 158, 158, 0.1);
    color: #9e9e9e;
}

.status-reconnecting {
    background: rgba(255, 152, 0, 0.1);
    color: #ff9800;
}

/* System Info */
.system-info {
    background: var(--whatsapp-panel-bg);
    border-radius: 10px;
    padding: 20px;
    border: 1px solid var(--whatsapp-border);
    margin-top: auto;
}

.system-info h2 {
    margin: 0 0 15px 0;
    color: var(--whatsapp-text);
    font-size: 18px;
    font-weight: 400;
    display: flex;
    align-items: center;
    gap: 10px;
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
}

.info-item {
    display: flex;
    align-items: center;
    gap: 10px;
}

.info-item strong {
    color: var(--whatsapp-text-secondary);
    font-weight: 500;
    font-size: 14px;
    min-width: 100px;
}

.info-item span {
    color: var(--whatsapp-text);
    font-size: 14px;
    flex: 1;
}

/* Toast Container */
.toast-container {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 1000;
    display: flex;
    flex-direction: column;
    gap: 10px;
    max-width: 400px;
}

.toast {
    background: var(--whatsapp-panel-bg);
    border: 1px solid var(--whatsapp-border);
    border-radius: 8px;
    padding: 15px 20px;
    display: flex;
    align-items: center;
    gap: 12px;
    min-width: 300px;
    animation: slideIn 0.3s ease;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    transition: all 0.3s ease;
}

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

/* Loading Overlay */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(17, 27, 33, 0.9);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    backdrop-filter: blur(2px);
}

.loading-spinner {
    width: 60px;
    height: 60px;
    border: 4px solid var(--whatsapp-border);
    border-top-color: var(--whatsapp-green);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 20px;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.loading-overlay p {
    color: var(--whatsapp-text);
    font-size: 16px;
    margin: 0;
}

/* Session ID */
.session-id {
    font-family: 'Courier New', monospace;
    background: rgba(0, 0, 0, 0.2);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 11px;
    color: var(--whatsapp-text);
}

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

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

::-webkit-scrollbar-thumb {
    background: var(--whatsapp-border);
    border-radius: 3px;
}

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

/* Responsive */
@media (max-width: 1200px) {
    .sidebar {
        width: 300px;
    }
}

@media (max-width: 992px) {
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .actions-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .info-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .app-container {
        flex-direction: column;
    }
    
    .sidebar {
        width: 100%;
        height: auto;
        max-height: 60vh;
        border-right: none;
        border-bottom: 1px solid var(--whatsapp-border);
    }
    
    .main-content {
        padding: 15px;
    }
    
    .content-header h1 {
        font-size: 24px;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .actions-grid {
        grid-template-columns: 1fr;
    }
    
    .info-grid {
        grid-template-columns: 1fr;
    }
    
    .toast {
        min-width: 250px;
        max-width: calc(100vw - 40px);
    }
}

@media (max-width: 480px) {
    .content-header h1 {
        font-size: 20px;
    }
    
    .stat-card h3 {
        font-size: 24px;
    }
    
    .action-card h4 {
        font-size: 16px;
    }
    
    .btn-small {
        padding: 4px 8px;
        font-size: 11px;
        min-width: 28px;
        height: 28px;
    }
}