:root {
    --primary-color: #3b82f6;
    --primary-hover: #2563eb;
    --bg-color: #0f172a;
    --card-bg: #1e293b;
    --text-color: #f1f5f9;
    --text-muted: #94a3b8;
    --border-color: #334155;
    --success-color: #22c55e;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
}

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

body {
    font-family:
        -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu,
        sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    min-height: 100vh;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem;
}

header {
    text-align: center;
    margin-bottom: 3rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
}

header h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

header p {
    color: var(--text-muted);
}

section {
    background-color: var(--card-bg);
    border-radius: 8px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    border: 1px solid var(--border-color);
}

section h2 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
    color: var(--text-color);
}

/* Status Display */
.status-display {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.status-indicator {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.status-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background-color: var(--text-muted);
    animation: pulse 2s infinite;
}

.status-dot.idle {
    background-color: var(--text-muted);
}

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

.status-dot.ringing {
    background-color: var(--warning-color);
    animation: ring 0.5s infinite;
}

.status-dot.in-call {
    background-color: var(--success-color);
}

.status-dot.disconnected {
    background-color: var(--danger-color);
}

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

@keyframes ring {
    0%,
    100% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(1.3);
        opacity: 0.7;
    }
}

/* Call Info */
.call-info {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    padding: 1rem;
    background-color: rgba(0, 0, 0, 0.2);
    border-radius: 6px;
}

.info-row {
    display: flex;
    justify-content: space-between;
}

.info-row .label {
    color: var(--text-muted);
}

.info-row span:last-child {
    font-weight: 600;
}

/* Dial Form */
.dial-form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

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

.form-group label {
    font-weight: 500;
}

.form-group input {
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background-color: var(--bg-color);
    color: var(--text-color);
    font-size: 1rem;
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

.form-group small {
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* Buttons */
button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 6px;
    font-size: 1rem;
    cursor: pointer;
    transition: background-color 0.2s;
}

button:hover {
    background-color: var(--primary-hover);
}

button:disabled {
    background-color: var(--text-muted);
    cursor: not-allowed;
}

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

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

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

.btn-success:hover:not(:disabled) {
    background-color: #16a34a;
}

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

.btn-danger:hover:not(:disabled) {
    background-color: #dc2626;
}

/* Call Controls */
.call-controls {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

.call-controls button {
    min-width: 120px;
}

/* Active Call */
.active-call {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
}

.call-visualizer {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
    height: 60px;
}

.wave {
    width: 4px;
    height: 20px;
    background-color: var(--success-color);
    border-radius: 2px;
    animation: wave 1s ease-in-out infinite;
}

.wave:nth-child(2) {
    animation-delay: 0.1s;
}

.wave:nth-child(3) {
    animation-delay: 0.2s;
}

@keyframes wave {
    0%,
    100% {
        height: 20px;
    }
    50% {
        height: 40px;
    }
}

/* Incoming Call */
.incoming-call {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
}

.caller-info {
    text-align: center;
    font-size: 1.125rem;
}

#actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

ul {
    padding-left: 1.5rem;
}

li {
    margin-bottom: 0.5rem;
}

#dial-panel,
#active-call-panel,
#incoming-call-panel {
    transition: opacity 0.3s ease;
}