*,
*::before,
*::after {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    font-size: 16px;
    line-height: 1.5;
    color: #1a1a2e;
    background: #f4f6fb;
}

a {
    color: #2563eb;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

.container {
    width: min(1100px, 92%);
    margin: 0 auto;
}

.site-header {
    background: #fff;
    border-bottom: 1px solid #e5e7eb;
    padding: 1rem 0;
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.logo {
    font-size: 1.25rem;
    font-weight: 700;
    color: #111827;
    text-decoration: none;
}

.nav {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.main-content {
    padding: 2.5rem 0 4rem;
}

.site-footer {
    padding: 1.5rem 0;
    border-top: 1px solid #e5e7eb;
    color: #6b7280;
    font-size: 0.9rem;
    background: #fff;
}

.hero {
    text-align: center;
    padding: 3rem 1rem;
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
}

.hero h1 {
    margin: 0 0 0.75rem;
    font-size: clamp(1.75rem, 4vw, 2.5rem);
}

.hero p {
    margin: 0 auto 1.5rem;
    max-width: 560px;
    color: #4b5563;
}

.hero-actions {
    display: flex;
    justify-content: center;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.card {
    max-width: 440px;
    margin: 0 auto;
    background: #fff;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
}

.card-wide {
    max-width: none;
}

.card h1 {
    margin: 0 0 0.5rem;
    font-size: 1.5rem;
}

.card .subtitle {
    margin: 0 0 1.5rem;
    color: #6b7280;
    font-size: 0.95rem;
}

.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.35rem;
    font-weight: 600;
    font-size: 0.9rem;
}

.form-group input {
    width: 100%;
    padding: 0.65rem 0.75rem;
    border: 1px solid #d1d5db;
    border-radius: 8px;
    font-size: 1rem;
}

.form-group select {
    width: 100%;
    padding: 0.65rem 0.75rem;
    border: 1px solid #d1d5db;
    border-radius: 8px;
    font-size: 1rem;
    background: #fff;
}

.form-group input:focus {
    outline: none;
    border-color: #2563eb;
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.form-footer {
    margin-top: 1.25rem;
}

.btn {
    display: inline-block;
    padding: 0.65rem 1.1rem;
    border: none;
    border-radius: 8px;
    background: #2563eb;
    color: #fff;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
}

.btn:hover {
    background: #1d4ed8;
    text-decoration: none;
}

.btn-block {
    width: 100%;
    text-align: center;
}

.btn-small {
    padding: 0.45rem 0.85rem;
    font-size: 0.9rem;
}

.btn-secondary {
    background: #e5e7eb;
    color: #111827;
}

.btn-secondary:hover {
    background: #d1d5db;
}

.alert {
    padding: 0.75rem 1rem;
    border-radius: 8px;
    margin-bottom: 1rem;
    font-size: 0.95rem;
}

.alert-error {
    background: #fef2f2;
    color: #991b1b;
    border: 1px solid #fecaca;
}

.alert-success {
    background: #ecfdf5;
    color: #065f46;
    border: 1px solid #a7f3d0;
}

.muted-link {
    display: block;
    margin-top: 1rem;
    text-align: center;
    font-size: 0.9rem;
    color: #6b7280;
}

.errors {
    margin: 0 0 1rem;
    padding: 0.75rem 1rem 0.75rem 2rem;
    background: #fef2f2;
    border: 1px solid #fecaca;
    border-radius: 8px;
    color: #991b1b;
}

.errors li {
    margin-bottom: 0.25rem;
}