:root {
    --primary-navy: #1d3b63;
    --text-main: #333333;
    --text-muted: #555555;
    --border-color: #cccccc;
    --bg-gray: #f8f9fa;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-gray);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    margin: 0;
}

.card {
    background: white;
    padding: 40px;
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    width: 100%;
    max-width: 650px;
}

h1 { color: var(--primary-navy); font-size: 1.4rem; margin-bottom: 15px; }
.description { color: var(--text-main); font-size: 0.95rem; line-height: 1.5; margin-bottom: 15px; }
.status { font-size: 0.95rem; margin-bottom: 30px; }
h2 { color: var(--primary-navy); font-size: 1.2rem; margin-bottom: 20px; }

input {
    width: 100%;
    padding: 12px 15px;
    margin-bottom: 15px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 1rem;
    box-sizing: border-box;
}

button {
    width: 100%;
    padding: 12px;
    background-color: var(--primary-navy);
    color: white;
    border: none;
    border-radius: 4px;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

button:hover { opacity: 0.9; }

button:disabled {
    background-color: #6c757d;
    cursor: not-allowed;
    opacity: 0.7;
}

.hidden { display: none; }

.helper-links {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
    margin-top: 15px;
}

.divider { color: #ccc; font-size: 0.8rem; }

.back-link {
    background: none;
    color: var(--text-muted);
    font-size: 0.85rem;
    text-decoration: underline;
    cursor: pointer;
    border: none;
    padding: 0;
}

#message-container {
    margin-top: 20px;
    text-align: center;
    font-size: 0.9rem;
    min-height: 1.2rem;
}

.success { color: #28a745; }
.error { color: #dc3545; }
.otp-instruction { font-size: 0.9rem; color: var(--text-muted); margin-bottom: 10px; }