:root {
    --bg: #ffffff;
    --text: #212529;
    --muted: #6c757d;
    --border: #dee2e6;
    --stripe: #f8f9fa;
    --hover: #eef6f8;
    --accent: #0dcaf0;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
    color: var(--text);
    background: var(--bg);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.6rem 1.25rem;
    background: var(--accent);
}

.nav-links a {
    margin-right: 1.25rem;
    color: #054652;
    text-decoration: none;
    font-weight: 500;
}

.nav-links a:hover,
.nav-links a.active {
    text-decoration: underline;
}

.nav-user {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: #054652;
    font-size: 0.9rem;
}

.nav-user form {
    margin: 0;
}

.nav-user a,
.nav-user button {
    padding: 0;
    border: none;
    background: none;
    color: #054652;
    font: inherit;
    text-decoration: none;
    cursor: pointer;
}

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

main {
    padding: 0.75rem 1.25rem;
}

.avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    object-fit: cover;
    flex-shrink: 0;
}

.rot-1 {
    transform: rotate(90deg);
}

.rot-2 {
    transform: rotate(180deg);
}

.rot-3 {
    transform: rotate(270deg);
}

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

@media (max-width: 576px) {
    .avatar {
        width: 24px;
        height: 24px;
    }
}