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

:root {
    --primary-color: #4f46e5;
    --secondary-color: #7c3aed;
    --success-color: #10b981;
    --error-color: #ef4444;
    --bg-color: #0f172a;
    --card-bg: #1e293b;
    --text-color: #f1f5f9;
    --text-secondary: #94a3b8;
    --border-color: #334155;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    color: var(--text-color);
    min-height: 100vh;
    padding: 20px;
}

.container {
    max-width: 900px;
    margin: 0 auto;
}

header {
    text-align: center;
    margin-bottom: 40px;
    padding: 30px;
    background: var(--card-bg);
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

h1 {
    font-size: 2.5em;
    margin-bottom: 10px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.subtitle {
    color: var(--text-secondary);
    font-size: 1.1em;
}

/* Status Card */
.status-card {
    background: var(--card-bg);
    padding: 30px;
    border-radius: 15px;
    margin-bottom: 30px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.status-indicator {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
    font-size: 1.3em;
    font-weight: bold;
}

.pulse {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--success-color);
    animation: pulse 2s infinite;
}

.pulse.listening {
    background: var(--primary-color);
    animation: pulse 0.8s infinite;
}

.pulse.speaking {
    background: var(--secondary-color);
    animation: pulse 0.5s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(1.2); }
}

/* Control Section */
.control-section {
    display: flex;
    gap: 15px;
    justify-content: center;
    margin-bottom: 30px;
}

.btn {
    padding: 15px 40px;
    font-size: 1.1em;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    font-weight: bold;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 10px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
}

.btn-primary:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(79, 70, 229, 0.4);
}

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

.btn-secondary:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(239, 68, 68, 0.4);
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.icon {
    font-size: 1.3em;
}

/* Transcript and Response */
.transcript-section,
.response-section,
.log-section,
.instructions {
    background: var(--card-bg);
    padding: 25px;
    border-radius: 15px;
    margin-bottom: 20px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

h3, h4 {
    margin-bottom: 15px;
    color: var(--primary-color);
}

.transcript-box,
.response-box,
.log-box {
    background: var(--bg-color);
    padding: 20px;
    border-radius: 10px;
    border: 2px solid var(--border-color);
    min-height: 80px;
    font-size: 1.1em;
    line-height: 1.6;
    direction: rtl;
}

.log-box {
    max-height: 300px;
    overflow-y: auto;
}

.payment-item {
    background: var(--card-bg);
    padding: 15px;
    margin-bottom: 10px;
    border-radius: 8px;
    border-right: 4px solid var(--success-color);
}

.payment-item .time {
    color: var(--text-secondary);
    font-size: 0.9em;
}

.payment-item .details {
    margin-top: 8px;
    color: var(--text-color);
}

/* Instructions */
.instructions ul {
    margin-right: 20px;
    line-height: 2;
}

.instructions li {
    color: var(--text-secondary);
}

/* Footer */
footer {
    text-align: center;
    padding: 20px;
    color: var(--text-secondary);
    font-size: 0.9em;
}

/* Responsive */
@media (max-width: 768px) {
    h1 {
        font-size: 1.8em;
    }

    .control-section {
        flex-direction: column;
    }

    .btn {
        width: 100%;
    }
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-color);
}

::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 4px;
}

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