@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

:root {
    --bg-dark: #0f111a;
    --panel-bg: rgba(25, 28, 41, 0.6);
    --panel-border: rgba(255, 255, 255, 0.05);
    --text-primary: #f0f0f5;
    --text-secondary: #8c90a1;
    --accent-glow: rgba(99, 102, 241, 0.5);
    --primary-color: #6366f1;
    --primary-hover: #4f46e5;
    --ai-color: #10b981;
    --user-color: #3b82f6;
    --admin-color: #f59e0b;
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-primary);
    height: 100vh;
    display: flex;
    overflow: hidden;
    background-image: 
        radial-gradient(circle at 15% 50%, rgba(99, 102, 241, 0.15), transparent 25%),
        radial-gradient(circle at 85% 30%, rgba(16, 185, 129, 0.1), transparent 25%);
}

.glass-panel {
    background: var(--panel-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-right: 1px solid var(--panel-border);
}

/* Sidebar (Chat List) */
.sidebar {
    width: 320px;
    display: flex;
    flex-direction: column;
    z-index: 10;
}

.sidebar-header {
    padding: 24px;
    border-bottom: 1px solid var(--panel-border);
}

.sidebar-header h1 {
    font-size: 20px;
    font-weight: 600;
    background: linear-gradient(90deg, #fff, #a5b4fc);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.chat-list {
    flex: 1;
    overflow-y: auto;
    padding: 12px;
}

.chat-item {
    padding: 16px;
    border-radius: 12px;
    margin-bottom: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    border: 1px solid transparent;
}

.chat-item:hover {
    background: rgba(255, 255, 255, 0.03);
    transform: translateY(-2px);
}

.chat-item.active {
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.3);
    box-shadow: 0 4px 20px rgba(99, 102, 241, 0.1);
}

.chat-item-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 6px;
}

.chat-provider {
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-secondary);
    font-weight: 600;
}

.chat-external-id {
    font-size: 15px;
    font-weight: 500;
}

.badge {
    padding: 4px 8px;
    border-radius: 20px;
    font-size: 10px;
    font-weight: 600;
    text-transform: uppercase;
}

.badge.ai-on {
    background: rgba(16, 185, 129, 0.2);
    color: #34d399;
}

.badge.ai-off {
    background: rgba(239, 68, 68, 0.2);
    color: #f87171;
}

/* Main Chat Area */
.chat-main {
    flex: 1;
    display: flex;
    flex-direction: column;
    position: relative;
}

.chat-header {
    padding: 20px 32px;
    border-bottom: 1px solid var(--panel-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--panel-bg);
    backdrop-filter: blur(10px);
    z-index: 5;
}

.chat-title {
    font-size: 18px;
    font-weight: 500;
}

.toggle-container {
    display: flex;
    align-items: center;
    gap: 12px;
}

.toggle-label {
    font-size: 14px;
    color: var(--text-secondary);
}

/* Switch */
.switch {
    position: relative;
    display: inline-block;
    width: 50px;
    height: 28px;
}
.switch input {
    opacity: 0;
    width: 0;
    height: 0;
}
.slider {
    position: absolute;
    cursor: pointer;
    top: 0; left: 0; right: 0; bottom: 0;
    background-color: rgba(255,255,255,0.1);
    transition: .4s;
    border-radius: 34px;
    border: 1px solid var(--panel-border);
}
.slider:before {
    position: absolute;
    content: "";
    height: 20px;
    width: 20px;
    left: 4px;
    bottom: 3px;
    background-color: white;
    transition: .4s;
    border-radius: 50%;
}
input:checked + .slider {
    background-color: var(--primary-color);
}
input:checked + .slider:before {
    transform: translateX(22px);
}

/* Messages */
.messages-container {
    flex: 1;
    padding: 32px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 16px;
    scroll-behavior: smooth;
}

.message {
    max-width: 70%;
    padding: 14px 20px;
    border-radius: 18px;
    font-size: 15px;
    line-height: 1.5;
    animation: fadeIn 0.3s ease-out forwards;
    opacity: 0;
    transform: translateY(10px);
    word-wrap: break-word;
    overflow-wrap: break-word;
    word-break: break-word;
}

@keyframes fadeIn {
    to { opacity: 1; transform: translateY(0); }
}

.msg-user {
    align-self: flex-start;
    background: rgba(59, 130, 246, 0.15);
    border: 1px solid rgba(59, 130, 246, 0.2);
    border-bottom-left-radius: 4px;
}

.msg-ai {
    align-self: flex-start;
    background: rgba(16, 185, 129, 0.15);
    border: 1px solid rgba(16, 185, 129, 0.2);
    border-bottom-left-radius: 4px;
}

.msg-admin {
    align-self: flex-end;
    background: var(--primary-color);
    color: white;
    border-bottom-right-radius: 4px;
    box-shadow: 0 4px 15px var(--accent-glow);
}

.msg-sender {
    font-size: 11px;
    text-transform: uppercase;
    font-weight: 700;
    margin-bottom: 6px;
    letter-spacing: 0.5px;
}
.msg-user .msg-sender { color: #60a5fa; }
.msg-ai .msg-sender { color: #34d399; }
.msg-admin .msg-sender { color: #e0e7ff; }

/* Input area */
.input-area {
    padding: 24px 32px;
    border-top: 1px solid var(--panel-border);
    background: var(--panel-bg);
    display: flex;
    gap: 16px;
    backdrop-filter: blur(10px);
}

.input-box {
    flex: 1;
    background: rgba(0,0,0,0.2);
    border: 1px solid var(--panel-border);
    border-radius: 12px;
    padding: 14px 20px;
    color: white;
    font-family: inherit;
    font-size: 15px;
    resize: none;
    height: 52px;
    transition: all 0.3s;
}

.input-box:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

.btn-send {
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 12px;
    padding: 0 24px;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    transition: all 0.3s;
    height: 52px;
}

.btn-send:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px var(--accent-glow);
}

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

/* Scrollbar */
::-webkit-scrollbar {
    width: 6px;
}
::-webkit-scrollbar-track {
    background: transparent;
}
::-webkit-scrollbar-thumb {
    background: rgba(255,255,255,0.1);
    border-radius: 10px;
}
::-webkit-scrollbar-thumb:hover {
    background: rgba(255,255,255,0.2);
}

.empty-state {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100%;
    color: var(--text-secondary);
    font-size: 16px;
}

/* Navigation */
.main-nav {
    width: 200px;
    display: flex;
    flex-direction: column;
    padding: 24px 0;
    z-index: 20;
}

.nav-brand {
    font-size: 32px;
    text-align: center;
    margin-bottom: 30px;
}

.nav-links {
    list-style: none;
}

.nav-item {
    padding: 16px 24px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s;
    font-weight: 500;
}

.nav-item:hover {
    color: white;
    background: rgba(255, 255, 255, 0.05);
}

.nav-item.active {
    color: white;
    border-left: 4px solid var(--primary-color);
    background: rgba(99, 102, 241, 0.1);
}

/* Tabs */
.tab-content {
    flex: 1;
    display: none;
    height: 100%;
}
.tab-content.active {
    display: flex;
}

/* Settings Panels */
.settings-panel {
    flex: 1;
    padding: 40px;
    overflow-y: auto;
}

.settings-panel h2 {
    margin-bottom: 30px;
    font-weight: 600;
}

.settings-group {
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--panel-border);
    border-radius: 12px;
    padding: 24px;
    margin-bottom: 24px;
}

.settings-group h3 {
    font-size: 16px;
    color: var(--text-secondary);
    margin-bottom: 16px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-size: 14px;
    color: var(--text-secondary);
}

.form-group input[type="text"],
.form-group input[type="password"],
.form-group select,
.form-group textarea {
    width: 100%;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--panel-border);
    color: white;
    padding: 12px 16px;
    border-radius: 8px;
    font-size: 14px;
    outline: none;
    font-family: inherit;
    resize: vertical;
}
.form-group select option {
    background: #1a1d2d;
    color: white;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
    border-color: var(--primary-color);
}

.btn-save {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: 0.2s;
    margin-top: 10px;
}
.btn-save:hover:not(:disabled) {
    background: var(--primary-hover);
    box-shadow: 0 4px 15px var(--accent-glow);
}
.btn-save:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    background: var(--text-secondary);
}

/* Stats */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 24px;
}

.stat-card {
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--panel-border);
    border-radius: 12px;
    padding: 24px;
    text-align: center;
}

.stat-card h3 {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 12px;
}

.stat-value {
    font-size: 36px;
    font-weight: 700;
    color: white;
}

.connector-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--panel-border);
    padding: 16px;
    border-radius: 8px;
    margin-bottom: 12px;
}
.connector-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 12px;
}
.status-indicator {
    display: inline-block;
    width: 10px;
    height: 10px;
    border-radius: 50%;
}
.status-on { background: #10b981; box-shadow: 0 0 8px #10b981; }
.status-off { background: #ef4444; box-shadow: 0 0 8px #ef4444; }

/* Login Modal */
.login-modal {
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    background: var(--bg-dark);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
}
.login-box {
    width: 400px;
    padding: 40px;
    border-radius: 16px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.5);
}

.unread-dot {
    display: inline-block;
    width: 8px;
    height: 8px;
    background-color: #ef4444;
    border-radius: 50%;
    margin-right: 6px;
    box-shadow: 0 0 6px rgba(239, 68, 68, 0.6);
}

.unread-nav-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 20px;
    height: 20px;
    padding: 0 6px;
    background: #ef4444;
    color: #fff;
    font-size: 11px;
    font-weight: 700;
    border-radius: 10px;
    margin-left: 6px;
    box-shadow: 0 0 8px rgba(239, 68, 68, 0.5);
    animation: badgePulse 2s ease-in-out infinite;
    vertical-align: middle;
    line-height: 1;
}

@keyframes badgePulse {
    0%, 100% { box-shadow: 0 0 6px rgba(239, 68, 68, 0.5); }
    50%       { box-shadow: 0 0 14px rgba(239, 68, 68, 0.9); }
}

/* Advanced Settings Collapsible */
.advanced-settings {
    margin-top: 15px;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--panel-border);
    border-radius: 8px;
    padding: 12px 16px;
    transition: all 0.3s ease;
}

.advanced-settings[open] {
    background: rgba(255, 255, 255, 0.04);
}

.advanced-settings summary {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-secondary);
    cursor: pointer;
    outline: none;
    user-select: none;
    transition: color 0.2s;
}

.advanced-settings summary:hover {
    color: var(--text-primary);
}

.advanced-settings summary::-webkit-details-marker {
    color: var(--primary-color);
}

.msg-time {
    font-size: 10px;
    font-weight: 400;
    text-transform: none;
    color: var(--text-secondary);
    opacity: 0.8;
    margin-left: auto;
    padding-left: 10px;
}