:root {
    --primary-color: #003B49;
    /* Deep Teal */
    --accent-color: #FFB71B;
    /* Gold/Yellow */
    --bg-color: #F4F4F4;
    /* Off-White */
    --card-bg: #FFFFFF;
    /* White */
    --text-main: #003B49;
    /* Deep Teal */
    --text-muted: #536b72;
    /* Muted Teal/Gray */
    --border-color: #e2e8f0;
    --success-color: #10b981;
    --input-bg: #FFFFFF;
}

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

body {
    font-family: 'Outfit', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-main);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    line-height: 1.6;
}

/* Subtle Geometric Background Pattern (Optional, keeps it clean) */
body::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: radial-gradient(var(--border-color) 1px, transparent 1px);
    background-size: 20px 20px;
    opacity: 0.5;
    z-index: -1;
}

/* Container */
.container {
    width: 100%;
    max-width: 480px;
    padding: 20px;
    z-index: 1;
}

/* Card Style - Clean & Flat */
.card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    /* Sharp corners or very slight radius for professional look */
    border-radius: 4px;
    padding: 40px;
    box-shadow: 0 4px 6px -1px rgba(0, 59, 73, 0.05), 0 2px 4px -1px rgba(0, 59, 73, 0.03);
    text-align: left;
    /* Corporate standard is often left-aligned */
}

/* Typography */
header {
    margin-bottom: 32px;
    border-bottom: 2px solid var(--accent-color);
    padding-bottom: 16px;
    display: inline-block;
    /* Bottom border only as wide as content? Or block? Let's go full width for separator vibe */
    width: 100%;
}

h1 {
    font-size: 1.5rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--primary-color);
    margin: 0;
}

.subtitle {
    display: block;
    margin-top: 8px;
    font-size: 0.9rem;
    color: var(--accent-color);
    /* Gold accent */
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

p {
    font-size: 1rem;
    color: var(--text-muted);
    margin-bottom: 1.5rem;
}

/* Form Elements */
.form-group {
    margin-bottom: 24px;
}

label {
    display: block;
    margin-bottom: 8px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--primary-color);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

input,
textarea {
    width: 100%;
    padding: 12px 16px;
    background: var(--input-bg);
    border: 1px solid var(--border-color);
    border-radius: 2px;
    /* Sharp */
    color: var(--text-main);
    font-family: inherit;
    font-size: 1rem;
    outline: none;
    transition: border-color 0.2s ease;
}

input:focus,
textarea:focus {
    border-color: var(--primary-color);
    /* No glow, just a clean hard border change */
}

/* Radio Group */
.radio-group {
    display: flex;
    gap: 16px;
    margin-bottom: 24px;
}

.radio-option {
    flex: 1;
    position: relative;
}

.radio-option input[type="radio"] {
    position: absolute;
    opacity: 0;
    cursor: pointer;
}

.radio-option label {
    display: block;
    padding: 12px;
    text-align: center;
    border: 1px solid var(--border-color);
    border-radius: 2px;
    background: var(--input-bg);
    color: var(--text-muted);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    margin-bottom: 0;
}

.radio-option input[type="radio"]:checked+label {
    background-color: var(--primary-color);
    color: #FFFFFF;
    border-color: var(--primary-color);
    box-shadow: 0 2px 4px rgba(0, 59, 73, 0.2);
}

/* Checkbox */
.checkbox-group {
    display: flex;
    align-items: center;
    margin-bottom: 24px;
    cursor: pointer;
}

.checkbox-group input[type="checkbox"] {
    width: 20px;
    height: 20px;
    margin-right: 12px;
    accent-color: var(--primary-color);
    cursor: pointer;
}

.checkbox-group label {
    margin-bottom: 0;
    cursor: pointer;
    text-transform: none;
    font-weight: 400;
    font-size: 1rem;
    color: var(--text-main);
}

input::placeholder,
textarea::placeholder {
    color: #cbd5e1;
}

/* Buttons */
.btn-primary {
    width: 100%;
    padding: 16px;
    background-color: var(--primary-color);
    color: #FFFFFF;
    border: none;
    border-radius: 2px;
    /* Sharp */
    font-size: 1rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    cursor: pointer;
    transition: background-color 0.2s ease, transform 0.1s;
    margin-top: 8px;
}

.btn-primary:hover {
    background-color: #004e60;
    /* Slightly lighter teal */
}

.btn-primary:active {
    transform: translateY(1px);
}

.btn-primary:disabled {
    background-color: #94a3b8;
    cursor: not-allowed;
}

/* Utility */
.hidden {
    display: none;
}

#successMessage {
    text-align: center;
    padding: 20px;
    border: 1px solid var(--success-color);
    background-color: #ecfdf5;
    border-radius: 4px;
}

#successMessage h2 {
    color: var(--success-color);
    margin-bottom: 8px;
    font-size: 1.2rem;
}

/* Links */
a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    border-bottom: 1px solid transparent;
    transition: border-color 0.2s;
}

a:hover {
    border-bottom-color: var(--accent-color);
}

/* Footer/Brand block in card */
.brand-footer {
    margin-top: 32px;
    padding-top: 16px;
    border-top: 1px solid var(--border-color);
    font-size: 0.8rem;
    color: var(--text-muted);
    text-align: center;
}