:root {
    --navy: #0d1b2a;
    --navy-light: #1b2f47;
    --yellow: #f4c430;
    --grey-bg: #f5f6f8;
    --text: #1b1f24;
    --border: #dde1e6;
}
* { box-sizing: border-box; }
body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
    background: var(--grey-bg);
    color: var(--text);
}
.topbar {
    background: var(--navy);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 1.25rem;
    position: sticky;
    top: 0;
    z-index: 10;
}
.brand { font-weight: 700; font-size: 1.1rem; letter-spacing: 0.3px; }
.mainnav a {
    color: #fff;
    text-decoration: none;
    margin-left: 1.25rem;
    font-size: 0.95rem;
}
.mainnav a:hover { color: var(--yellow); }
.navtoggle { display: none; background: none; border: none; color: #fff; font-size: 1.4rem; }

.container { max-width: 1000px; margin: 0 auto; padding: 1.5rem 1rem; }

.card {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 1.25rem;
    margin-bottom: 1.25rem;
}

h1 { font-size: 1.4rem; margin-top: 0; }
h2 { font-size: 1.15rem; }

table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 0.6rem 0.5rem; border-bottom: 1px solid var(--border); font-size: 0.95rem; }
th { color: #555; font-weight: 600; }

.btn {
    display: inline-block;
    background: var(--navy);
    color: #fff;
    border: none;
    border-radius: 6px;
    padding: 0.55rem 1rem;
    font-size: 0.95rem;
    text-decoration: none;
    cursor: pointer;
}
.btn:hover { background: var(--navy-light); }
.btn.yellow { background: var(--yellow); color: var(--navy); font-weight: 600; }
.btn.small { padding: 0.3rem 0.6rem; font-size: 0.85rem; }
.btn.danger { background: #b3261e; }

input[type=text], input[type=email], input[type=tel], input[type=date],
input[type=number], input[type=password], select, textarea {
    width: 100%;
    padding: 0.55rem;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 0.95rem;
    margin-bottom: 0.85rem;
}
label { font-weight: 600; font-size: 0.9rem; display: block; margin-bottom: 0.25rem; }

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 0 1rem; }

.flash { padding: 0.7rem 1rem; border-radius: 6px; margin-bottom: 1rem; font-size: 0.95rem; }
.flash.success { background: #e3f6e5; color: #1e6b2c; }
.flash.error { background: #fbe3e1; color: #8a221a; }

.login-wrap { max-width: 360px; margin: 4rem auto; }

@media (max-width: 720px) {
    .mainnav {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 100%; left: 0; right: 0;
        background: var(--navy);
        padding: 0.5rem 1.25rem 1rem;
    }
    .mainnav.open { display: flex; }
    .mainnav a { margin: 0.5rem 0; }
    .navtoggle { display: block; }
    .grid-2 { grid-template-columns: 1fr; }
    table, thead, tbody, th, td, tr { display: block; }
    thead { display: none; }
    tr { border-bottom: 2px solid var(--border); padding: 0.5rem 0; }
    td { border: none; padding: 0.3rem 0; }
    td::before { content: attr(data-label); font-weight: 600; display: block; font-size: 0.8rem; color: #666; }
}