:root {
    --bg-color: #0B0E14;
    --glass-bg: rgba(30, 35, 45, 0.6);
    --glass-border: rgba(255, 255, 255, 0.08);
    --text-primary: #E2E8F0;
    --text-secondary: #94A3B8;
    --accent-color: #6366F1;
    --accent-hover: #4F46E5;
    --danger-color: #EF4444;
    --success-color: #10B981;
    --chat-bg: #0d1117;
    --bubble-in: #1E293B;
    --bubble-out: #3730A3;
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    height: 100vh;
    overflow: hidden;
}

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

/* Glassmorphism utils */
.glass {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
}

.full-glass-panel {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    padding: 24px;
    height: 100%;
    overflow-y: auto;
}

/* Sidebar Navigation */
.nav-sidebar {
    width: 280px;
    display: flex;
    flex-direction: column;
    padding: 24px 16px;
    border-right: 1px solid var(--glass-border);
    z-index: 10;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 40px;
    padding: 0 8px;
}

.logo {
    width: 32px;
    height: 32px;
    background: linear-gradient(135deg, var(--accent-color), #8B5CF6);
    border-radius: 8px;
}

.nav-menu {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.nav-btn {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 15px;
    font-weight: 500;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.2s ease;
    text-align: left;
}

.nav-btn:hover {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
}

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

/* Stats Area */
.stats-card {
    background: rgba(0, 0, 0, 0.2);
    border-radius: 12px;
    padding: 16px;
    border: 1px solid var(--glass-border);
}

.stat-title {
    font-size: 11px;
    font-weight: 700;
    color: var(--text-secondary);
    letter-spacing: 0.05em;
    margin-bottom: 4px;
}

.stat-value {
    font-size: 24px;
    font-weight: 700;
}
.text-danger { color: var(--danger-color); }

/* Main Area & View Panels */
.main-area {
    flex-grow: 1;
    position: relative;
    padding: 20px;
    overflow: hidden;
}

.view-panel {
    display: none;
    height: 100%;
    width: 100%;
    animation: fadeIn 0.3s ease;
}

.view-panel.active {
    display: flex;
}

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

/* TWO-PANE CHAT VIEW */
#view-chats {
    gap: 20px;
}

.chat-sidebar {
    width: 320px;
    border-radius: 16px;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.sidebar-header {
    padding: 20px;
    border-bottom: 1px solid var(--glass-border);
}

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

.chat-item {
    padding: 16px 20px;
    border-bottom: 1px solid var(--glass-border);
    cursor: pointer;
    transition: background 0.2s;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.chat-item:hover {
    background: rgba(255,255,255,0.05);
}
.chat-item.active {
    background: rgba(99, 102, 241, 0.15);
    border-left: 3px solid var(--accent-color);
}

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

.chat-name {
    font-weight: 600;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.chat-time {
    font-size: 12px;
    color: var(--text-secondary);
}

.chat-preview {
    font-size: 13px;
    color: var(--text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Chat Main (Right Pane) */
.chat-main {
    flex-grow: 1;
    border-radius: 16px;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    background: var(--chat-bg);
}

.chat-header {
    padding: 20px;
    background: var(--glass-bg);
    border-bottom: 1px solid var(--glass-border);
}

.chat-header-title {
    font-weight: 600;
    font-size: 16px;
}

.chat-messages {
    flex-grow: 1;
    padding: 20px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.empty-state {
    margin: auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    color: var(--text-secondary);
    gap: 16px;
    opacity: 0.5;
}

/* Chat Bubbles */
.message-row {
    display: flex;
    width: 100%;
    margin-bottom: 4px;
}

.message-row.in {
    justify-content: flex-start;
}

.message-row.out {
    justify-content: flex-end;
}

.chat-bubble {
    max-width: 70%;
    padding: 10px 14px;
    border-radius: 12px;
    font-size: 14px;
    line-height: 1.5;
    position: relative;
    box-shadow: 0 1px 2px rgba(0,0,0,0.2);
}

.message-row.in .chat-bubble {
    background-color: var(--bubble-in);
    border-top-left-radius: 0;
}

.message-row.in .chat-bubble::before {
    content: '';
    position: absolute;
    top: 0;
    left: -8px;
    width: 0;
    height: 0;
    border-right: 8px solid var(--bubble-in);
    border-bottom: 8px solid transparent;
}

.message-row.out .chat-bubble {
    background-color: var(--bubble-out);
    border-top-right-radius: 0;
}

.message-row.out .chat-bubble::before {
    content: '';
    position: absolute;
    top: 0;
    right: -8px;
    width: 0;
    height: 0;
    border-left: 8px solid var(--bubble-out);
    border-bottom: 8px solid transparent;
}

.bubble-meta {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    gap: 8px;
    margin-top: 4px;
    font-size: 11px;
    opacity: 0.7;
}

.msg-badge {
    font-size: 9px;
    padding: 2px 6px;
    border-radius: 4px;
    text-transform: uppercase;
    background: rgba(255,255,255,0.1);
}

.status-deleted {
    margin-top: 8px;
    padding: 8px 12px;
    background: rgba(239, 68, 68, 0.15);
    border: 1px solid rgba(239, 68, 68, 0.3);
    border-radius: 8px;
    color: #FCA5A5;
    font-size: 12px;
    display: flex;
    align-items: center;
    gap: 6px;
}

/* Modal UI */
.modal-overlay {
    display: none;
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0.6);
    backdrop-filter: blur(4px);
    z-index: 100;
    align-items: center;
    justify-content: center;
}

.modal-overlay.active {
    display: flex;
}

.modal-content {
    width: 400px;
    padding: 24px;
    border-radius: 16px;
    background: var(--bg-color);
    box-shadow: 0 10px 25px rgba(0,0,0,0.5);
    animation: fadeIn 0.2s ease;
}

/* Settings View UI */
.settings-panel {
    max-width: 800px;
    margin: 0 auto;
}

.settings-panel h2 {
    margin-bottom: 8px;
}
.subtitle {
    color: var(--text-secondary);
    margin-bottom: 30px;
    font-size: 14px;
}

.setting-group {
    background: rgba(0,0,0,0.2);
    padding: 20px;
    border-radius: 12px;
    border: 1px solid var(--glass-border);
}

.setting-group h3 {
    font-size: 14px;
    margin-bottom: 16px;
    color: var(--accent-color);
}

.mt-2 { margin-top: 8px; }
.mt-4 { margin-top: 24px; }

/* Toggles */
.toggle-label {
    display: flex;
    align-items: center;
    gap: 12px;
    cursor: pointer;
}
.toggle-label input {
    width: 18px;
    height: 18px;
    accent-color: var(--accent-color);
}
.toggle-text {
    font-size: 15px;
}

/* Select & Inputs */
.form-select, .add-input-group input {
    width: 100%;
    padding: 12px 16px;
    background: rgba(255,255,255,0.05);
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    color: white;
    font-size: 14px;
}
.form-select:focus, .add-input-group input:focus {
    outline: none;
    border-color: var(--accent-color);
}
.form-select option {
    background: var(--bg-color);
}

/* Lists */
.setting-lists-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.list-editor h4 {
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 12px;
}

.add-input-group {
    display: flex;
    gap: 8px;
    margin-bottom: 12px;
}

.btn-add {
    padding: 0 16px;
    background: var(--accent-color);
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
}
.btn-add:hover { background: var(--accent-hover); }

.items-container {
    display: flex;
    flex-direction: column;
    gap: 8px;
    max-height: 200px;
    overflow-y: auto;
}

.list-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 14px;
    background: rgba(0,0,0,0.3);
    border-radius: 8px;
    font-size: 13px;
}

.btn-remove {
    background: transparent;
    border: none;
    color: var(--danger-color);
    cursor: pointer;
    font-weight: bold;
    font-size: 16px;
}

.btn-primary {
    padding: 12px 24px;
    background: var(--accent-color);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    width: 100%;
    transition: background 0.2s;
}
.btn-primary:hover {
    background: var(--accent-hover);
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 6px;
}
::-webkit-scrollbar-track {
    background: transparent;
}
::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.2);
}

/* Call Cards */
.call-card {
    background: rgba(0, 0, 0, 0.2);
    border-radius: 12px;
    padding: 16px;
    margin-bottom: 12px;
    border: 1px solid var(--glass-border);
}