:root {
    --primary-color: #3b82f6;
    --danger-color: #ef4444;
    --bg-color: #f3f4f6;
    --card-bg: #ffffff;
    --text-color: #1f2937;
    --text-secondary: #6b7280;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
}

.container {
    width: 100%;
    max-width: 400px;
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 20px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.05);
    text-align: center;
}

.screen {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    animation: fadeIn 0.3s ease-out;
}

.hidden {
    display: none !important;
}

/* Typography */
h1, h2 {
    font-weight: 700;
    color: var(--text-color);
}

.subtitle {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* Form Elements */
input {
    width: 100%;
    padding: 15px;
    border: 2px solid #e5e7eb;
    border-radius: 12px;
    font-size: 1rem;
    transition: border-color 0.2s;
    margin-bottom: 10px;
}

input:focus {
    outline: none;
    border-color: var(--primary-color);
}

/* Buttons */
.btn {
    width: 100%;
    padding: 16px;
    border: none;
    border-radius: 12px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.1s, opacity 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.btn:active {
    transform: scale(0.98);
}

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

.record-btn {
    background-color: var(--danger-color);
    color: white;
    height: 80px;
    font-size: 1.3rem;
    box-shadow: 0 4px 14px rgba(239, 68, 68, 0.3);
}

.stop-btn {
    background-color: var(--text-color);
    color: white;
    height: 80px;
    font-size: 1.3rem;
}

.text-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 0.9rem;
    cursor: pointer;
    text-decoration: underline;
}

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

/* Indicators */
.status-indicator {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    margin: 20px 0;
}

.dot {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background-color: #d1d5db;
    transition: background-color 0.3s;
}

.recording .dot {
    background-color: var(--danger-color);
    animation: pulse 1.5s infinite;
}

.error-msg {
    color: var(--danger-color);
    font-size: 0.9rem;
    margin-top: -10px;
}

.status-msg {
    font-size: 0.9rem;
    color: var(--text-secondary);
    min-height: 1.2rem;
}

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

@keyframes pulse {
    0% { box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.4); }
    70% { box-shadow: 0 0 0 10px rgba(239, 68, 68, 0); }
    100% { box-shadow: 0 0 0 0 rgba(239, 68, 68, 0); }
}