* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: system-ui, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
}

body {
    background: #f4f7fc;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 2rem 1rem;
    min-height: 100vh;
}

.container {
    max-width: 720px;
    width: 100%;
    background: #ffffff;
    border-radius: 28px;
    box-shadow: 0 20px 35px rgba(0, 0, 0, 0.05), 0 8px 18px rgba(0, 20, 30, 0.08);
    padding: 2rem 2rem;
    transition: all 0.2s ease;
}

h1 {
    font-size: 1.8rem;
    font-weight: 600;
    color: #0b1e33;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.2rem;
    letter-spacing: -0.3px;
    border-bottom: 2px solid #e9eef3;
    padding-bottom: 1.2rem;
}

h1 span {
    background: #1565c0;
    color: white;
    font-size: 0.9rem;
    padding: 0.2rem 0.8rem;
    border-radius: 30px;
    margin-left: 0.5rem;
    font-weight: 500;
}

.badge {
    display: inline-block;
    background: #fff3cd;
    color: #856404;
    font-size: 0.75rem;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    margin-bottom: 1.5rem;
    font-weight: 600;
}

form {
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
}

.grid-2 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.2rem;
}

.field-group {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}

label {
    font-weight: 600;
    font-size: 0.85rem;
    color: #1e2f40;
    display: flex;
    align-items: center;
    gap: 0.2rem;
    letter-spacing: 0.3px;
}

label .req {
    color: #c62828;
    font-size: 1rem;
    margin-left: 2px;
}

input, select, textarea {
    padding: 0.7rem 1rem;
    border: 1.5px solid #dce3eb;
    border-radius: 14px;
    font-size: 0.95rem;
    background: #fafbfc;
    transition: 0.2s;
    outline: none;
    width: 100%;
    color: #0b1f2f;
    font-weight: 500;
}

input:focus, select:focus, textarea:focus {
    border-color: #1565c0;
    background: #ffffff;
    box-shadow: 0 0 0 3px rgba(21, 101, 192, 0.1);
}

textarea {
    resize: vertical;
    min-height: 80px;
}

hr {
    border: 0.5px solid #e0e7ef;
    margin: 0.5rem 0 0.8rem;
}

.section-title {
    font-weight: 700;
    color: #0d47a1;
    margin: 0.5rem 0 0.2rem;
    font-size: 1rem;
    letter-spacing: 0.2px;
}

button {
    background: linear-gradient(135deg, #1565c0, #0d47a1);
    color: white;
    border: none;
    padding: 1rem 2rem;
    font-weight: 600;
    font-size: 1.1rem;
    border-radius: 40px;
    cursor: pointer;
    transition: 0.25s;
    margin-top: 0.8rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

button:hover {
    background: linear-gradient(135deg, #1976d2, #1565c0);
    box-shadow: 0 8px 18px rgba(21, 101, 192, 0.25);
}

button:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

.response-box {
    margin-top: 1.8rem;
    background: #eef2f6;
    border-radius: 18px;
    padding: 1.2rem;
    font-family: monospace;
    border-left: 5px solid #1565c0;
    white-space: pre-wrap;
    font-size: 0.85rem;
    color: #0c1e2e;
    display: none;
    word-break: break-word;
}

.response-box.success {
    background: #e8f5e9;
    border-left-color: #2e7d32;
}

.response-box.error {
    background: #ffebee;
    border-left-color: #c62828;
}

.note {
    font-size: 0.75rem;
    color: #5e6f82;
    margin-top: 0.2rem;
}

.timestamp-hint {
    font-size: 0.7rem;
    color: #3d556b;
    margin-left: 0.3rem;
}