* {
    box-sizing: border-box;
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
}

/* Page background */
.page {
    min-height: 100vh;
    margin: 0;
    padding: 2rem;
    background-color: #f8fafc;
    background-image: 
        radial-gradient(at top right, rgba(106, 90, 205, 0.12), transparent 400px),
        radial-gradient(at bottom left, rgba(0, 212, 255, 0.12), transparent 400px);
}

/* Main container */
.container {
    max-width: 1100px;
    margin: 0 auto;
}

/* Card = primary visual separator */
.card {
    background: #ffffff;
    padding: 1.75rem;
    margin-bottom: 2rem;
    border-radius: 18px;
    border: 1px solid #e5e7eb;
    box-shadow: 0 6px 18px rgba(0, 0, 0, 0.04);
}

/* Optional inner grouping if needed */
.form-section {
    padding: 1.25rem;
    border-radius: 14px;
    background: #f8fafc;
    border: 1px solid #e2e8f0;
    margin-bottom: 1.25rem;
}

/* Headings */
h2 {
    color: #1e293b;
    margin: 0 0 1rem 0;
    font-size: 1.25rem;
}

/* Inputs */
input {
    width: 100%;
    padding: 0.7rem 0.75rem;
    margin-bottom: 0.9rem;
    border-radius: 10px;
    border: 1px solid #d1d5db;
    background: #ffffff;
    transition: border-color 0.2s, box-shadow 0.2s;
}

input:focus {
    border-color: #6a5acd;
    outline: none;
    box-shadow: 0 0 0 3px rgba(106, 90, 205, 0.12);
}

/* Buttons */
.buttons {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

button {
    padding: 0.7rem 1rem;
    border-radius: 10px;
    border: none;
    font-weight: 600;
    cursor: pointer;
    background: #6a5acd;
    color: #ffffff;
}

button[type="button"] {
    background: #e5e7eb;
    color: #1e293b;
}

button:hover {
    opacity: 0.95;
}

/* Messages */
#formMessage {
    margin-top: 0.75rem;
    font-size: 0.9rem;
}

/* Debug block */
.debug {
    margin-top: 3rem;
    padding: 1.25rem;
    border-radius: 14px;
    background: #ffffff;
    border: 1px dashed #cbd5e1;
    font-family: monospace;
    font-size: 0.85rem;
    color: #475569;
}