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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', sans-serif;
    line-height: 1.6;
    color: #1e293b;
    background: #f5f5f5;
    min-height: 100vh;
    padding: 40px 20px;
}

.container {
    max-width: 500px;
    margin: 0 auto;
}

header {
    text-align: center;
    margin-bottom: 2rem;
}

header h1 {
    font-size: 1.75rem;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 0.25rem;
}

.subtitle {
    font-size: 0.95rem;
    color: #64748b;
}

.card {
    background: white;
    border-radius: 8px;
    padding: 2rem;
    border: 1px solid #e2e8f0;
}

.form-group {
    margin-bottom: 1.25rem;
}

label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: #1e293b;
    font-size: 0.9rem;
}

input[type="text"],
select {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid #d1d5db;
    border-radius: 6px;
    font-size: 0.95rem;
    font-family: inherit;
    background: white;
    color: #1e293b;
    transition: border-color 0.2s;
}

input[type="text"]:hover,
select:hover {
    border-color: #9ca3af;
}

input[type="text"]:focus,
select:focus {
    outline: none;
    border-color: #0ea5e9;
    box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.1);
}

select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg width='12' height='8' viewBox='0 0 12 8' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1.5L6 6.5L11 1.5' stroke='%236b7280' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    padding-right: 2.5rem;
}

.bible-selectors {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.help-text {
    display: block;
    margin-top: 0.35rem;
    color: #9ca3af;
    font-size: 0.8rem;
}

.btn-primary {
    width: 100%;
    padding: 0.875rem 1.5rem;
    background: #0ea5e9;
    color: white;
    border: none;
    border-radius: 6px;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: background-color 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.btn-primary:hover:not(:disabled) {
    background: #0284c7;
}

.btn-primary:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.spinner {
    width: 18px;
    height: 18px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.message {
    margin-top: 1.25rem;
    padding: 1rem;
    border-radius: 6px;
    font-size: 0.9rem;
}

.message.success {
    background: #ecfdf5;
    color: #047857;
    border: 1px solid #a7f3d0;
}

.message.error {
    background: #fef2f2;
    color: #b91c1c;
    border: 1px solid #fecaca;
}

.message.info {
    background: #eff6ff;
    color: #1d4ed8;
    border: 1px solid #bfdbfe;
}

footer {
    text-align: center;
    padding: 1.5rem 0 0.5rem;
    color: #94a3b8;
    font-size: 0.85rem;
}

footer a {
    color: #94a3b8;
    text-decoration: none;
}

footer a:hover {
    color: #cbd5e1;
    text-decoration: underline;
}

@media (max-width: 540px) {
    body {
        padding: 20px 16px;
    }

    .card {
        padding: 1.5rem;
    }

    .bible-selectors {
        grid-template-columns: 1fr;
    }

    header h1 {
        font-size: 1.5rem;
    }
}