:root {
    --navy: #17324d;
    --blue: #24547a;
    --background: #f4f6f8;
    --border: #d8dee5;
    --text: #24303c;
    --muted: #65727f;
    --white: #ffffff;
    --danger: #a32626;
    --success: #2d6a45;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    background: var(--background);
    color: var(--text);
    font-family: Arial, Helvetica, sans-serif;
    line-height: 1.5;
}

.site-header {
    background: var(--navy);
    color: var(--white);
    padding: 0 24px;
}

.header-inner {
    max-width: 1200px;
    min-height: 68px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}

.brand {
    font-size: 1.15rem;
    font-weight: 700;
    letter-spacing: 0.02em;
}

nav {
    display: flex;
    align-items: center;
    gap: 18px;
}

nav a,
nav button {
    color: var(--white);
    background: none;
    border: 0;
    padding: 0;
    font: inherit;
    text-decoration: none;
    cursor: pointer;
}

nav a:hover,
nav button:hover {
    text-decoration: underline;
}

main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 32px 24px 48px;
}

h1,
h2,
h3 {
    color: var(--navy);
}

.card {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 24px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.button {
    display: inline-block;
    background: var(--blue);
    color: var(--white);
    border: 0;
    border-radius: 5px;
    padding: 10px 16px;
    font: inherit;
    text-decoration: none;
    cursor: pointer;
}

.button:hover {
    background: var(--navy);
}

input,
select,
textarea {
    width: 100%;
    border: 1px solid var(--border);
    border-radius: 5px;
    padding: 10px;
    font: inherit;
}

label {
    display: block;
    margin-bottom: 6px;
    font-weight: 700;
}

.muted {
    color: var(--muted);
}

.status-overdue {
    color: var(--danger);
    font-weight: 700;
}

.status-complete {
    color: var(--success);
    font-weight: 700;
}

@media (max-width: 700px) {
    .header-inner {
        align-items: flex-start;
        flex-direction: column;
        padding: 16px 0;
    }

    nav {
        flex-wrap: wrap;
    }

    main {
        padding: 24px 16px 40px;
    }
}