:root {
    --bg-color: #121212;
    --text-color: #e0e0e0;
    --primary-color: #6200ee;
    --secondary-color: #03dac6;
    --danger-color: #cf6679;
    --success-color: #4caf50;
    --warning-color: #ff9800;
    --surface-color: #1e1e1e;
    --border-color: #333333;
    --hover-color: rgba(255, 255, 255, 0.1);
    --card-bg: #1e1e1e;
    --card-header-bg: #2c2c2c;
    --empty-text: #9e9e9e;
    --timestamp-color: #9e9e9e;
    --count-bg: #2c2c2c;
    --control-bg: #2c2c2c;
    --table-stripe: rgba(255,255,255,0.05);
    --table-hover: rgba(255,255,255,0.075);
    --table-border-color: #404040;
    --table-header-bg: #2c2c2c;
    --table-text-color: #ffffff;
}

/* Base styles */
html {
    background-color: var(--bg-color);
}

body {
    padding: 20px;
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    margin: 0;
    padding: 0;
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

/* Card styles */
.card {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 0.25rem;
    box-shadow: 0 2px 4px var(--shadow-color);
    margin-bottom: 1rem;
}

.card-header {
    background-color: var(--card-header-bg);
    border-bottom: 1px solid var(--border-color);
    padding: 0.75rem 1.25rem;
}

.card-body {
    padding: 1.25rem;
}

.empty-text {
    color: var(--empty-text);
    text-align: center;
    padding: 20px;
}

.timestamp {
    color: var(--timestamp-color);
    font-size: 0.875rem;
}

.count {
    background-color: var(--count-bg);
    border-radius: 0.25rem;
    padding: 0.25rem 0.5rem;
    margin-left: 0.5rem;
}

.control {
    background-color: var(--control-bg);
    border: none;
    border-radius: 0.25rem;
    padding: 0.375rem 0.75rem;
    cursor: pointer;
}

.control:hover {
    opacity: 0.9;
}

/* Table styles */
.table {
    width: 100%;
    margin-bottom: 1rem;
    color: var(--table-text-color) !important;
    border-collapse: collapse;
}

.table th,
.table td {
    padding: 0.75rem;
    border: 1px solid var(--table-border-color);
    color: var(--table-text-color) !important;
}

.table thead th {
    background-color: var(--table-header-bg);
    border-bottom: 2px solid var(--table-border-color);
    color: var(--table-text-color) !important;
}

.table tbody tr:nth-of-type(odd) {
    background-color: var(--table-stripe);
    color: var(--table-text-color) !important;
}

.table tbody tr:hover {
    background-color: var(--table-hover);
    color: var(--table-text-color) !important;
}

/* Navigation and controls */
.nav-links {
    margin-bottom: 20px;
}

.refresh-control {
    display: flex;
    align-items: center;
    margin-bottom: 15px;
}

.toggle-refresh,
.toggle-darkmode {
    cursor: pointer;
    margin-left: 10px;
    padding: 4px 10px;
    border-radius: 4px;
    background-color: var(--control-bg);
    font-size: 0.85rem;
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    transition: all 0.2s ease;
    color: var(--text-color);
}

.toggle-darkmode {
    margin-left: auto;
}

/* Call controls */
.call-controls {
    display: flex;
    gap: 10px;
    margin-top: 10px;
}

.btn-call {
    background-color: #28a745;
    color: white;
}

.btn-call:hover {
    background-color: #218838;
    color: white;
}

.btn-hangup {
    background-color: #dc3545;
    color: white;
    display: none;
}

.btn-hangup:hover {
    background-color: #c82333;
    color: white;
}

/* Audio controls */
.audio-control {
    margin-bottom: 15px;
}

.audio-meter {
    width: 100%;
    height: 10px;
    background-color: #e9ecef;
    border-radius: 5px;
    overflow: hidden;
    margin-top: 5px;
}

.audio-level {
    height: 100%;
    width: 0%;
    background-color: #28a745;
    transition: width 0.1s ease;
}

/* Status indicators */
.status-indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    display: inline-block;
    margin-right: 5px;
}

.status-connected {
    background-color: #28a745;
}

.status-disconnected {
    background-color: #dc3545;
}

/* Utility classes */
.text-center {
    text-align: center;
}

.mb-3 {
    margin-bottom: 1rem;
}

.d-flex {
    display: flex;
}

.justify-content-between {
    justify-content: space-between;
}

.align-items-center {
    align-items: center;
}

.w-100 {
    width: 100%;
}

/* Header styles */
.dark-header {
    background-color: #343a40 !important;
}

.primary-header {
    background-color: #007bff !important;
}

.secondary-header {
    background-color: #6c757d !important;
}

/* Form styles */
.phone-input {
    font-size: 1.2rem;
    letter-spacing: 1px;
    text-align: center;
}

.devices-container {
    margin-top: 20px;
}

.call-type-selector {
    margin-bottom: 20px;
}

/* Header styles */
header {
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
}

header h1 {
    margin: 0;
    font-size: 2rem;
    color: var(--text-color);
}

/* Device status styles */
.device-status {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-top: 1rem;
}

.status-indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    display: inline-block;
}

.status-connected {
    background-color: var(--success-color);
    box-shadow: 0 0 8px var(--success-color);
}

.status-disconnected {
    background-color: var(--danger-color);
    box-shadow: 0 0 8px var(--danger-color);
}

.status-connecting {
    background-color: var(--warning-color);
    box-shadow: 0 0 8px var(--warning-color);
    animation: pulse 1.5s infinite;
}

/* Audio controls styles */
.audio-controls {
    background-color: var(--surface-color);
    border-radius: 8px;
    padding: 1.5rem;
    margin-bottom: 2rem;
}

.device-selection {
    display: grid;
    gap: 1.5rem;
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.device-select {
    background-color: var(--bg-color);
    color: var(--text-color);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 0.5rem;
    width: 100%;
}

.level-meter {
    height: 8px;
    background-color: var(--bg-color);
    border-radius: 4px;
    overflow: hidden;
    margin-top: 0.5rem;
}

.level-bar {
    height: 100%;
    width: 0;
    background-color: var(--primary-color);
    transition: width 0.1s ease;
}

/* Call controls styles */
.call-controls {
    background-color: var(--surface-color);
    border-radius: 8px;
    padding: 1.5rem;
}

.call-type {
    display: flex;
    gap: 2rem;
    margin: 1rem 0;
}

.radio-group {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.button-group {
    display: flex;
    gap: 1rem;
    margin-top: 1.5rem;
}

/* Button styles */
.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 4px;
    font-weight: 600;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.2s ease;
}

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

.btn-primary:hover {
    background-color: color-mix(in srgb, var(--primary-color) 80%, white);
}

.btn-secondary {
    background-color: var(--secondary-color);
    color: black;
}

.btn-secondary:hover {
    background-color: color-mix(in srgb, var(--secondary-color) 80%, white);
}

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

.btn-danger:hover {
    background-color: color-mix(in srgb, var(--danger-color) 80%, white);
}

/* Form input styles */
input[type="tel"] {
    background-color: var(--bg-color);
    color: var(--text-color);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 0.75rem;
    width: 100%;
    font-size: 1rem;
}

input[type="tel"]:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(98, 0, 238, 0.2);
}

/* Status message styles */
.status-message {
    margin-top: 1.5rem;
    padding: 1rem;
    border-radius: 4px;
    background-color: var(--surface-color);
    border-left: 4px solid var(--primary-color);
}

.status-message.error {
    border-left-color: var(--danger-color);
}

.status-message.success {
    border-left-color: var(--success-color);
}

.status-message.warning {
    border-left-color: var(--warning-color);
}

/* Animation keyframes */
@keyframes pulse {
    0% { opacity: 1; }
    50% { opacity: 0.5; }
    100% { opacity: 1; }
}

/* Responsive design */
@media (min-width: 768px) {
    .device-selection {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 767px) {
    .container {
        padding: 1rem;
    }
    
    .call-type {
        flex-direction: column;
        gap: 1rem;
    }
    
    .button-group {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
}