* { box-sizing: border-box; }
body {
    margin: 0;
    font-family: -apple-system, Segoe UI, Roboto, Arial, sans-serif;
    background: #f4f6fa;
    color: #1a2233;
}

/* ---------- Layout ---------- */
.admin-shell { display: flex; min-height: 100vh; }

.admin-sidebar {
    width: 260px;
    flex: 0 0 260px;
    background: #102457;
    color: #fff;
    display: flex;
    flex-direction: column;
    padding: 0;
}

.admin-brand {
    font-size: 18px;
    font-weight: 700;
    padding: 20px;
    border-bottom: 1px solid rgba(255,255,255,.12);
}

/* ---------- Меню админки ---------- */
.admin-menu {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    padding: 8px 0;
}

.admin-menu a {
    display: block;
    padding: 16px 20px;        /* требование: отступы */
    text-align: left;          /* выравнивание по левому краю */
    color: #dbe4f5;
    text-decoration: none;
    font-size: 15px;
    line-height: 1.2;
    border-left: 3px solid transparent;
    transition: background .15s, color .15s, border-color .15s;
}

.admin-menu a:hover,
.admin-menu a:focus {
    background: rgba(255,255,255,.08);
    color: #fff;
    border-left-color: #4c8dff;
}

.admin-logout { margin-top: auto; padding: 16px 20px; }
.admin-logout button {
    width: 100%;
    padding: 10px 16px;
    background: rgba(255,255,255,.1);
    color: #fff;
    border: 1px solid rgba(255,255,255,.25);
    border-radius: 6px;
    cursor: pointer;
}
.admin-logout button:hover { background: rgba(255,255,255,.2); }

/* ---------- Контент ---------- */
.admin-content {
    flex: 1 1 auto;
    min-width: 0;
    padding: 24px 28px;
    overflow-x: auto;
}

.page-head { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 16px; }
h1 { margin: 0 0 16px; font-size: 24px; }
h3 { margin: 20px 0 10px; font-size: 16px; color: #33405c; }

.admin-table {
    width: 100%;
    border-collapse: collapse;
    background: #fff;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 1px 3px rgba(16,36,87,.08);
}
.admin-table th, .admin-table td {
    padding: 12px 14px;
    text-align: left;
    border-bottom: 1px solid #e7ecf5;
    font-size: 14px;
    vertical-align: middle;
}
.admin-table th { background: #eef2fa; font-weight: 600; }
.admin-table td.actions { display: flex; gap: 12px; align-items: center; }
.admin-table td.actions form { margin: 0; }

.link-danger { background: none; border: 0; padding: 0; color: #c62828; cursor: pointer; font-size: 14px; }

.admin-form { background: #fff; padding: 20px 22px; border-radius: 10px; box-shadow: 0 1px 3px rgba(16,36,87,.08); max-width: 640px; }
.admin-form label { display: block; margin-bottom: 14px; font-size: 14px; color: #33405c; }
.admin-form input,
.admin-form select,
.admin-form textarea {
    display: block;
    width: 100%;
    margin-top: 6px;
    padding: 9px 12px;
    border: 1px solid #cfd8e8;
    border-radius: 6px;
    font-size: 14px;
    font-family: inherit;
}
.admin-form input[type="color"] { padding: 3px; height: 42px; }
.form-actions { display: flex; gap: 14px; align-items: center; margin-top: 8px; }

.btn {
    display: inline-block;
    background: #102457;
    color: #fff;
    padding: 10px 18px;
    border-radius: 6px;
    border: 0;
    text-decoration: none;
    cursor: pointer;
    font-size: 14px;
}
.btn:hover { background: #1a3670; }

.alert-ok {
    background: #e6f4ea;
    color: #1e6b34;
    border: 1px solid #b7e0c2;
    padding: 12px 16px;
    border-radius: 8px;
    margin-bottom: 16px;
    font-size: 14px;
}

/* ---------- Логин ---------- */
.login-page { display: flex; align-items: center; justify-content: center; min-height: 100vh; background: #102457; }
.login-box { background: #fff; padding: 28px 30px; border-radius: 12px; width: 360px; box-shadow: 0 10px 30px rgba(0,0,0,.25); }
.login-box h1 { font-size: 20px; margin: 0 0 18px; text-align: left; }
.login-box label { display: block; margin-bottom: 14px; font-size: 14px; color: #33405c; }
.login-box input { width: 100%; margin-top: 6px; padding: 10px 12px; border: 1px solid #cfd8e8; border-radius: 6px; }
.login-box button { width: 100%; padding: 11px; background: #102457; color: #fff; border: 0; border-radius: 6px; cursor: pointer; font-size: 15px; }
.login-box button:hover { background: #1a3670; }
.text-danger { color: #c62828; font-size: 13px; margin-bottom: 10px; }